Questyle M18i is a compact USB DAC and headphone amplifier designed to upgrade wired listening from phones, tablets and computers.Questyle Current Mode amplification, high-resolution decoding and 3.5mm single-ended and 4.4mm balanced provide a focused portable HiFi solution without an internal battery.Why it stands outFour core reasons to choose this Questyle model.Current Mode AmplificationQuestyle's patented amplification architecture is designed for wide bandwidth, fast transient response and low distortion.High-Resolution USB DecodingQuestyle flagship decoding platform supports high-resolution playback from compatible USB sources.Practical Headphone Connectivity3.5mm single-ended and 4.4mm balanced cover the intended wired headphone and IEM connections.Portable, Bus-Powered DesignThe compact unit draws power from the connected source and requires no separate charging routine.Best for Portable wired headphone listening USB-C phone and tablet audio Laptop and desktop headphone systems High-resolution local or streaming playback Not ideal for Wireless Bluetooth headphone users Users needing speaker power amplification Headsets requiring microphone pass-through Listeners needing an internal battery EMiUZEK Buying Notes Questyle M18i is a USB DAC/headphone amplifier, not a music player or speaker amplifier. USB cable compatibility depends on the source device; iPhone connection requirements vary by connector generation. Start with low gain and low volume when using sensitive IEMs. Frequently Asked QuestionsCan it drive passive speakers?No. It is designed for wired headphones and IEMs.Does it support Bluetooth?No. Audio input is through USB.Does it need charging?No internal battery is used; it is powered by the connected source.Can I use it with an iPhone?Yes with the appropriate compatible cable; MFi support applies where specified for the model.Does it support headset microphones?The headphone outputs are for audio playback and do not provide microphone pass-through.Can it work with a computer?Yes, through a compatible USB connection and operating-system audio output selection.HOW TO CONNECTUSB-C phoneSource: Phone / tabletConnection: USB-COutput: Headphone outputTarget: Wired IEMs or headphonesNote: Select the Questyle device as audio output if needed.Computer audioSource: PC / MacConnection: USBOutput: Headphone outputTarget: Wired headphonesNote: Use a compatible data cable, not a charge-only cable.Portable streamerSource: USB-capable digital playerConnection: USBOutput: Headphone outputTarget: Wired IEMsNote: Begin playback at low volume.Technical Specifications Feature Specification Product Type Portable USB DAC / headphone amplifier DAC Questyle flagship decoding platform Amplification Questyle Current Mode USB Input USB Type-C Headphone Outputs 3.5mm single-ended and 4.4mm balanced Power USB bus powered Maximum PCM Up to 32-bit/768kHz DSD Up to DSD512 Additional Function HD-call support with compatible devices Recommended System Setup Setup Connection Mobile Phone → USB → M18i → wired headphones Computer PC/Mac → USB → M18i → headphones Portable player USB digital player → M18i → IEMs Additional Product Content Feature M12i M15i M15C M18i Position Compact single-ended Premium dual-output USB-C dual-output Flagship mobile Headphone Outputs 3.5mm 3.5mm + 4.4mm 3.5mm + 4.4mm 3.5mm + 4.4mm Gain Control Automatic High / low High / low Model controls Best Use Simple portable setup Premium iOS/USB listening USB-C ecosystem Flagship portable system

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Questyle M12i is a compact USB DAC and headphone amplifier designed to upgrade wired listening from phones, tablets and computers. Questyle Current Mode amplification, high-resolution decoding and 3.5mm single-ended provide a focused portable HiFi solution without an internal battery. Why it stands out Four core reasons to choose this Questyle model. Current Mode Amplification Questyle's patented amplification architecture is designed for wide bandwidth, fast transient response and low distortion. High-Resolution USB Decoding ESS ES9281AC supports high-resolution playback from compatible USB sources. Practical Headphone Connectivity 3.5mm single-ended cover the intended wired headphone and IEM connections. Portable, Bus-Powered Design The compact unit draws power from the connected source and requires no separate charging routine. Best for Portable wired headphone listening USB-C phone and tablet audio Laptop and desktop headphone systems High-resolution local or streaming playback Not ideal for Wireless Bluetooth headphone users Users needing speaker power amplification Headsets requiring microphone pass-through Listeners needing an internal battery EMiUZEK Buying Notes Questyle M12i is a USB DAC/headphone amplifier, not a music player or speaker amplifier. USB cable compatibility depends on the source device; iPhone connection requirements vary by connector generation. Start with low gain and low volume when using sensitive IEMs. Frequently Asked Questions Can it drive passive speakers? No. It is designed for wired headphones and IEMs. Does it support Bluetooth? No. Audio input is through USB. Does it need charging? No internal battery is used; it is powered by the connected source. Can I use it with an iPhone? Yes with the appropriate compatible cable; MFi support applies where specified for the model. Does it support headset microphones? The headphone outputs are for audio playback and do not provide microphone pass-through. Can it work with a computer? Yes, through a compatible USB connection and operating-system audio output selection. HOW TO CONNECT USB-C phone Source: Phone / tabletConnection: USB-COutput: Headphone outputTarget: Wired IEMs or headphonesNote: Select the Questyle device as audio output if needed. Computer audio Source: PC / MacConnection: USBOutput: Headphone outputTarget: Wired headphonesNote: Use a compatible data cable, not a charge-only cable. Portable streamer Source: USB-capable digital playerConnection: USBOutput: Headphone outputTarget: Wired IEMsNote: Begin playback at low volume. Technical Specifications Feature Specification Product Type Portable USB DAC / headphone amplifier DAC ESS ES9281AC Amplification Questyle Current Mode USB Input USB Type-C Headphone Outputs 3.5mm single-ended Power USB bus powered Maximum PCM 32-bit/384kHz DSD DSD256 Apple Certification MFi Recommended System Setup Setup Connection Mobile Phone → USB → M12i → wired headphones Computer PC/Mac → USB → M12i → headphones Portable player USB digital player → M12i → IEMs Additional Product Content Feature M12i M15i M15C M18i Position Compact single-ended Premium dual-output USB-C dual-output Flagship mobile Headphone Outputs 3.5mm 3.5mm + 4.4mm 3.5mm + 4.4mm 3.5mm + 4.4mm Gain Control Automatic High / low High / low Model controls Best Use Simple portable setup Premium iOS/USB listening USB-C ecosystem Flagship portable system

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Questyle M15i is a compact USB DAC and headphone amplifier designed to upgrade wired listening from phones, tablets and computers.Questyle Current Mode amplification, high-resolution decoding and 3.5mm single-ended and 4.4mm balanced provide a focused portable HiFi solution without an internal battery.Why it stands outFour core reasons to choose this Questyle model.Current Mode AmplificationQuestyle's patented amplification architecture is designed for wide bandwidth, fast transient response and low distortion.High-Resolution USB DecodingESS ES9281AC supports high-resolution playback from compatible USB sources.Practical Headphone Connectivity3.5mm single-ended and 4.4mm balanced cover the intended wired headphone and IEM connections.Portable, Bus-Powered DesignThe compact unit draws power from the connected source and requires no separate charging routine.Best for Portable wired headphone listening USB-C phone and tablet audio Laptop and desktop headphone systems High-resolution local or streaming playback Not ideal for Wireless Bluetooth headphone users Users needing speaker power amplification Headsets requiring microphone pass-through Listeners needing an internal battery EMiUZEK Buying Notes Questyle M15i is a USB DAC/headphone amplifier, not a music player or speaker amplifier. USB cable compatibility depends on the source device; iPhone connection requirements vary by connector generation. Start with low gain and low volume when using sensitive IEMs. Frequently Asked QuestionsCan it drive passive speakers?No. It is designed for wired headphones and IEMs.Does it support Bluetooth?No. Audio input is through USB.Does it need charging?No internal battery is used; it is powered by the connected source.Can I use it with an iPhone?Yes with the appropriate compatible cable; MFi support applies where specified for the model.Does it support headset microphones?The headphone outputs are for audio playback and do not provide microphone pass-through.Can it work with a computer?Yes, through a compatible USB connection and operating-system audio output selection.HOW TO CONNECTUSB-C phoneSource: Phone / tabletConnection: USB-COutput: Headphone outputTarget: Wired IEMs or headphonesNote: Select the Questyle device as audio output if needed.Computer audioSource: PC / MacConnection: USBOutput: Headphone outputTarget: Wired headphonesNote: Use a compatible data cable, not a charge-only cable.Portable streamerSource: USB-capable digital playerConnection: USBOutput: Headphone outputTarget: Wired IEMsNote: Begin playback at low volume.Technical Specifications Feature Specification Product Type Portable USB DAC / headphone amplifier DAC ESS ES9281AC Amplification Questyle Current Mode USB Input USB Type-C Headphone Outputs 3.5mm single-ended and 4.4mm balanced Power USB bus powered Maximum PCM 32-bit/384kHz DSD DSD256 Gain High / low Apple Certification MFi Recommended System Setup Setup Connection Mobile Phone → USB → M15i → wired headphones Computer PC/Mac → USB → M15i → headphones Portable player USB digital player → M15i → IEMs Additional Product Content Feature M12i M15i M15C M18i Position Compact single-ended Premium dual-output USB-C dual-output Flagship mobile Headphone Outputs 3.5mm 3.5mm + 4.4mm 3.5mm + 4.4mm 3.5mm + 4.4mm Gain Control Automatic High / low High / low Model controls Best Use Simple portable setup Premium iOS/USB listening USB-C ecosystem Flagship portable system

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Questyle M15C is a compact USB DAC and headphone amplifier designed to upgrade wired listening from phones, tablets and computers.Questyle Current Mode amplification, high-resolution decoding and 3.5mm single-ended and 4.4mm balanced provide a focused portable HiFi solution without an internal battery.Why it stands outFour core reasons to choose this Questyle model.Current Mode AmplificationQuestyle's patented amplification architecture is designed for wide bandwidth, fast transient response and low distortion.High-Resolution USB DecodingESS ES9281AC supports high-resolution playback from compatible USB sources.Practical Headphone Connectivity3.5mm single-ended and 4.4mm balanced cover the intended wired headphone and IEM connections.Portable, Bus-Powered DesignThe compact unit draws power from the connected source and requires no separate charging routine.Best for Portable wired headphone listening USB-C phone and tablet audio Laptop and desktop headphone systems High-resolution local or streaming playback Not ideal for Wireless Bluetooth headphone users Users needing speaker power amplification Headsets requiring microphone pass-through Listeners needing an internal battery EMiUZEK Buying Notes Questyle M15C is a USB DAC/headphone amplifier, not a music player or speaker amplifier. USB cable compatibility depends on the source device; iPhone connection requirements vary by connector generation. Start with low gain and low volume when using sensitive IEMs. Frequently Asked QuestionsCan it drive passive speakers?No. It is designed for wired headphones and IEMs.Does it support Bluetooth?No. Audio input is through USB.Does it need charging?No internal battery is used; it is powered by the connected source.Can I use it with an iPhone?Yes with the appropriate compatible cable; MFi support applies where specified for the model.Does it support headset microphones?The headphone outputs are for audio playback and do not provide microphone pass-through.Can it work with a computer?Yes, through a compatible USB connection and operating-system audio output selection.HOW TO CONNECTUSB-C phoneSource: Phone / tabletConnection: USB-COutput: Headphone outputTarget: Wired IEMs or headphonesNote: Select the Questyle device as audio output if needed.Computer audioSource: PC / MacConnection: USBOutput: Headphone outputTarget: Wired headphonesNote: Use a compatible data cable, not a charge-only cable.Portable streamerSource: USB-capable digital playerConnection: USBOutput: Headphone outputTarget: Wired IEMsNote: Begin playback at low volume.Technical Specifications Feature Specification Product Type Portable USB DAC / headphone amplifier DAC ESS ES9281AC Amplification Questyle Current Mode USB Input USB Type-C Headphone Outputs 3.5mm single-ended and 4.4mm balanced Power USB bus powered Maximum PCM 32-bit/384kHz DSD DSD256 Gain High / low Recommended System Setup Setup Connection Mobile Phone → USB → M15C → wired headphones Computer PC/Mac → USB → M15C → headphones Portable player USB digital player → M15C → IEMs Additional Product Content Feature M12i M15i M15C M18i Position Compact single-ended Premium dual-output USB-C dual-output Flagship mobile Headphone Outputs 3.5mm 3.5mm + 4.4mm 3.5mm + 4.4mm 3.5mm + 4.4mm Gain Control Automatic High / low High / low Model controls Best Use Simple portable setup Premium iOS/USB listening USB-C ecosystem Flagship portable system

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Questyle CMA Fifteen is a reference desktop DAC, headphone amplifier and preamplifier for headphones, active monitors and power amplifiers.Its ES9038PRO DAC, Current Mode amplification, balanced headphone outputs and extensive digital/analog connectivity form a complete desktop audio hub.Why it stands outFour core reasons to choose this Questyle model.ES9038PRO Reference DACThe eight-channel flagship DAC supports PCM up to 32-bit/768kHz and native DSD512.Current Mode Headphone AmplificationFour Current Mode amplifier engines provide balanced and single-ended headphone drive.DAC, Headphone Amp and PreampOne chassis can control headphones, active speakers or an external power amplifier.Comprehensive Source SupportUSB, optical, coaxial, Bluetooth and analog inputs support mixed desktop systems.Best for Reference desktop headphone systems Active monitor control Balanced power-amplifier systems Multi-source digital audio desks Not ideal for Portable or battery-powered use Passive speakers without a power amplifier Users needing HDMI ARC Minimal single-source systems EMiUZEK Buying Notes CMA Fifteen does not directly power passive speakers; use a downstream power amplifier. Set fixed or variable output correctly before connecting active speakers or a power amplifier. Use low gain and low volume first with sensitive headphones. Frequently Asked QuestionsCan it power passive speakers?No. Use its pre-out with a separate power amplifier.Can it drive balanced headphones?Yes, through 4.4mm and 4-pin XLR balanced outputs.Does it support Bluetooth input?Yes, including supported high-resolution Bluetooth codecs such as LDAC.Can it connect to active speakers?Yes through XLR or RCA preamp outputs.Does it support analog input?Yes, RCA analog input is provided.Can it decode DSD512?Yes over a compatible USB source and playback configuration.HOW TO CONNECTDesktop headphonesSource: PC / MacConnection: USBOutput: 4.4mm / 4-pin XLR / 6.35mmTarget: Wired headphonesNote: Select appropriate gain.Active monitorsSource: Digital or analog sourceConnection: USB / optical / coaxial / Bluetooth / RCAOutput: XLR or RCA pre-outTarget: Active speakersNote: Use variable preamp output.Power amplifier systemSource: Digital sourceConnection: Supported digital inputOutput: XLR or RCA pre-outTarget: Power amplifier → passive speakersNote: Confirm volume control before playback.Technical Specifications Feature Specification Product Type Desktop DAC / headphone amplifier / preamplifier DAC ESS ES9038PRO Maximum PCM 32-bit/768kHz DSD Native DSD512 Headphone Outputs 4.4mm balanced; 4-pin XLR balanced; 6.35mm Line Outputs XLR and RCA Inputs USB, optical, coaxial, Bluetooth, RCA analog Amplification Four Questyle Current Mode amplifier engines Recommended System Setup Setup Connection Headphones Computer → USB → CMA Fifteen → headphones Active monitors Source → CMA Fifteen → XLR/RCA active speakers Passive speakers Source → CMA Fifteen → power amplifier → passive speakers Additional Product Content Feature CMA Fifteen CMA18 Master M18i Position Desktop DAC/amp/preamp Flagship desktop DAC/amp Portable flagship DAC ES9038PRO Flagship desktop architecture Mobile architecture Balanced Headphone 4.4mm + 4-pin XLR Yes 4.4mm Preamp Output XLR + RCA XLR + RCA Portable line function Best Use Reference desktop hub Top desktop system Portable listening

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Questyle SIGMA is a portable decoding all-in-one DAC and headphone amplifier designed to bring desktop-style audio performance to compact mobile and transportable systems.Its integrated digital decoding, Current Mode headphone amplification and balanced listening capability make it a flexible upgrade for phones, computers and wired headphones. Why it stands outPortable desktop performanceDesigned around Questyle’s goal of delivering desktop-level audio quality in a compact chassis.Integrated decoding and amplificationCombines digital source decoding and headphone drive in one portable component.Current Mode amplificationQuestyle’s Current Mode topology is engineered for fast transient response and low distortion.Flexible mobile and desktop useWorks as a transportable DAC/headphone amplifier across compatible mobile and computer sources. Best for Transportable high-end headphone systems Phone and computer lossless playback Balanced wired headphones and IEMs Listeners wanting more capability than a small dongle Not ideal for Directly driving passive loudspeakers Wireless-only headphone users Users seeking a tiny cable-style dongle EMiUZEK Buying Notes SIGMA is a portable DAC and headphone amplifier, not a speaker power amplifier. It is intended for compatible digital sources and wired headphones or IEMs. Confirm cable and connector compatibility with your source and headphones before purchase. Frequently asked questionsCan SIGMA drive passive speakers?No. It is a DAC/headphone amplifier rather than a loudspeaker power amplifier.Can it connect to a phone?Yes, with a compatible digital connection and cable.Can it be used with a computer?Yes, as a compatible USB audio device.Does it work with balanced headphones?Use the supported balanced headphone connection shown for the product and a correctly wired cable.Is it a Bluetooth-only device?No. Its primary role is wired digital decoding and headphone amplification.Is it smaller than a desktop DAC/amp?Yes, it is designed as a portable decoding all-in-one. HOW TO CONNECTMobile Headphone SystemSource: Compatible phone / tabletConnection: USB digital audioOutput: Headphone outputTarget: Wired IEMs or headphonesComputer Desktop SystemSource: PC / MacConnection: USB audioOutput: Balanced or single-ended headphone outputTarget: Wired headphonesHiFi Line SystemSource: Compatible digital sourceConnection: Digital audioOutput: Supported line outputTarget: Active speakers or external amplifier Technical Specifications Feature Specification Product type Portable decoding all-in-one DAC / headphone amplifier Amplification Questyle Current Mode architecture Primary sources Compatible phones, tablets and computers Audio path Digital decoding with analogue headphone amplification Headphone use Wired balanced and single-ended listening Speaker power amplifier Not included Firmware support Questyle SIGMA firmware available Form factor Portable / transportable What's in the box Questyle SIGMA USB data cable Product documentation Download CenterAccess product manuals, firmware updates, and additional support resources.Download CenterAdditional Product Content📊 Comparison: Which Portable DAC/Amp Is Right for You?Choose SIGMA for Questyle Current Mode sound and portable desktop-style performance; choose FiiO Q15 for its display and broader Bluetooth/coaxial features, or iFi xDSD Gryphon for analogue sound shaping and wireless flexibility. Feature Questyle SIGMA FiiO Q15 iFi xDSD Gryphon Core buying reason Current Mode portable reference system Feature-rich digital portable DAC/amp Portable DAC/amp with analogue sound controls Maximum digital playback PCM 768kHz / DSD512 PCM 768kHz / DSD512 PCM 768kHz with high-resolution DSD support Amplifier approach Questyle Current Mode amplification High-power portable headphone stage iFi balanced analogue amplification Display Interface focused on portable operation Colour status display OLED status display Bluetooth Check selected SIGMA operating mode Bluetooth decoding supported High-resolution Bluetooth supported Digital inputs USB-focused portable use USB and coaxial plus Bluetooth USB, optical/coaxial and Bluetooth Sound shaping Purist Current Mode presentation App and device settings XBass II and XSpace analogue controls Best choice when You prioritise Questyle’s amplifier topology and sound quality You want the broadest digital feature set and display You want wireless use and adjustable bass or spatial enhancement

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Questyle CMA Eighteen Master is a flagship desktop DAC, preamplifier and headphone amplifier designed as the control centre of a reference headphone or HiFi system.Its fully balanced Current Mode architecture, extensive digital and analogue connectivity, and powerful balanced headphone stage combine source control and high-end listening in one chassis. Why it stands outFlagship desktop integrationCombines digital decoding, analogue preamplification and headphone amplification in one reference-class component.Full-chain Current Mode designQuestyle’s Current Mode signal path is engineered for wide bandwidth, low distortion and precise transient response.Balanced system architectureBalanced headphone and line connections support demanding headphones and high-quality downstream systems.Flexible source controlMultiple digital and analogue inputs make it suitable for computers, transports and existing HiFi sources. Best for Reference desktop headphone systems High-end DAC and preamplifier upgrades Balanced headphones and active monitor systems Multi-source desktop or living-room HiFi systems Not ideal for Portable or battery-powered listening Directly driving passive loudspeakers Users who only need a simple USB dongle EMiUZEK Buying Notes This is the desktop CMA Eighteen Master, not the battery-powered CMA18 Portable. It is a DAC, preamplifier and headphone amplifier; it does not contain a loudspeaker power amplifier. Connect passive speakers through a separate power amplifier or integrated amplifier. Frequently asked questionsCan it drive passive speakers directly?No. Use its line output with an external power amplifier or active speakers.Can it be used as a preamplifier?Yes, connect its line output to a compatible power amplifier or active monitors.Can I connect a computer?Yes, use the appropriate digital input and install the official driver where required.Does it support balanced headphones?Yes, it provides balanced headphone connectivity as well as single-ended headphone use.Is this the CMA18 Portable?No. This listing is for the full-size desktop CMA Eighteen Master. HOW TO CONNECTDesktop Headphone SystemSource: PC / MacConnection: USB audioOutput: Balanced or single-ended headphone outputTarget: Wired headphonesActive Speaker SystemSource: Digital or analogue sourceConnection: Compatible inputOutput: Line / preamplifier outputTarget: Active speakersHiFi Preamp SystemSource: Streamer / CD transportConnection: Digital inputOutput: Balanced or RCA line outputTarget: Power amplifier and passive speakers Technical Specifications Feature Specification Product type Desktop DAC / preamplifier / headphone amplifier Architecture Fully balanced full-chain Current Mode design Digital sources Computer, digital transport and compatible digital audio sources Analogue input Line-level analogue input Headphone outputs Balanced and single-ended Line outputs Balanced and unbalanced Speaker amplification Not built in Power AC-powered desktop component What's in the box Questyle CMA Eighteen Master Power cable Remote control Product documentation Download CenterAccess product manuals, firmware updates, and additional support resources.Download CenterAdditional Product Content📊 Comparison: Which Flagship Desktop DAC/Amp Is Right for You?Choose CMA Eighteen Master for Current Mode sound, extensive source flexibility and a flagship all-in-one system; choose RME for deep DSP control, or FiiO K19 when HDMI ARC and very high headphone power are priorities. Feature Questyle CMA Eighteen Master RME ADI-2 DAC FS FiiO K19 Core buying reason Flagship Current Mode desktop system Reference DAC with powerful DSP High-power desktop DAC/amp with HDMI DAC architecture ESS ES9038PRO RME reference conversion platform Dual ESS ES9039SPRO Maximum USB playback PCM 768kHz / DSD512 PCM 768kHz / DSD PCM 768kHz / DSD512 Headphone connection 4.4mm balanced and 6.35mm 6.35mm plus dedicated IEM output 4.4mm, 6.35mm and 4-pin XLR Analogue input Included for multi-source integration Not on ADI-2 DAC FS Not the main use case DSP / EQ focus Sound-path and hardware focused Extensive PEQ, loudness and crossfeed App and onboard DSP features HDMI ARC No No Yes Best choice when You want Questyle Current Mode sound and a flagship preamp/headphone hub You need precise headphone correction and measurement-style control You need HDMI, Bluetooth and maximum connection flexibility

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Questyle QCC Dongle Pro is a compact USB-C lossless Bluetooth transmitter that upgrades compatible phones, computers and game consoles with higher-quality wireless audio codecs.MFi certification, LDAC support and Questyle app control make it a practical way to improve wireless headphone listening without replacing the source device. Why it stands outLDAC for Apple devicesEnables compatible Apple sources to transmit LDAC audio to supported wireless headphones.MFi-certified designOfficial Apple ecosystem certification supports dependable plug-and-play operation with compatible devices.Modern Bluetooth platformBluetooth 5.4 and supported high-quality codecs provide a flexible wireless upgrade.Compact multi-device useThe small USB-C format works across compatible mobile, computer and gaming sources. Best for Wireless headphones with LDAC support iPhone, iPad and Mac users wanting better Bluetooth codecs PC and console wireless audio Travel and compact desktop setups Not ideal for Wired headphones requiring a DAC or headphone output Receiving Bluetooth audio into an amplifier Headphones outside the supported codec and compatibility list EMiUZEK Buying Notes This is a Bluetooth transmitter, not a Bluetooth receiver or wired headphone DAC. The connected headphones must support the selected codec; actual codec choice depends on both devices. Check Questyle’s headset whitelist when compatibility with a specific model is essential. Frequently asked questionsCan it power wired headphones?No. It sends Bluetooth audio and has no analogue headphone output.Is it a Bluetooth receiver?No, it transmits audio from the connected source to Bluetooth headphones or speakers.Does it work with Apple devices?It is MFi certified; connection requirements vary by the Apple device and port.Can it work with a PC?Yes, with a compatible USB connection.Can I use it with a game console?It is intended for compatible console and handheld USB audio use; verify the specific platform and headset.Does every headset receive LDAC?No. The receiving headset must support LDAC. HOW TO CONNECTPhone or TabletSource: Compatible mobile deviceConnection: USB-C / compatible adapterWireless output: Selected Bluetooth codecTarget: Bluetooth headphonesComputerSource: PC / MacConnection: USB-C or USB-A adapterWireless output: BluetoothTarget: Wireless headphones or speakersGaming SetupSource: Compatible console / handheldConnection: USB audioWireless output: BluetoothTarget: Supported gaming headset Technical Specifications Feature Specification Product type USB Bluetooth audio transmitter Bluetooth version Bluetooth 5.4 Highlighted codecs LDAC and supported Qualcomm Bluetooth codecs Host connection USB-C Apple certification MFi certified Control Questyle companion app Analogue headphone output None Operating mode Transmit only What's in the box Questyle QCC Dongle Pro USB-C to USB-A adapter Product documentation Download CenterAccess product manuals, firmware updates, and additional support resources.Download CenterAdditional Product Content📊 Comparison: Which Bluetooth Transmitter Is Right for You?Choose QCC Dongle Pro for MFi-certified Apple use and both LDAC and aptX Lossless; choose FiiO BT11 for lower-cost codec coverage, or Creative BT-W6 for PC gaming, LE Audio and microphone features. Feature Questyle QCC Dongle Pro FiiO BT11 Creative BT-W6 Core buying reason Apple-friendly premium codec transmitter Value-focused multi-codec transmitter PC and gaming feature specialist Bluetooth version 5.4 Modern Qualcomm platform 5.4 LDAC Up to 990kbps with compatible receiver Up to 990kbps with compatible receiver Not supported aptX Lossless Supported Supported Supported LE Audio / LC3 Not the primary selling point LE Audio platform LC3, GMAP, Unicast and Broadcast Apple certification MFi certified No MFi claim No MFi claim App focus Pairing and codec control FiiO Control Windows app with EQ and gaming tools USB-A adapter Included Included Not included Best choice when You want LDAC or aptX Lossless from Apple and multiple sources You want broad codecs at a lower price You prioritise PC gaming, microphone support and LE Audio

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Questyle NHB12 is an MFi-certified lossless in-ear headphone system with a Lightning DAC/amplifier cable for high-resolution listening from compatible Apple devices.A 10.2mm dynamic driver, Current Mode amplification and interchangeable Lightning and 3.5mm cables combine portable convenience with flexible wired use. Why it stands outIntegrated Lightning DAC and amplifierThe supplied digital cable bypasses the source’s analogue headphone stage for a single-cable Apple listening solution.192kHz / 24-bit playbackSupports high-resolution PCM playback from compatible apps and Apple devices.Current Mode signal pathQuestyle’s low-power Current Mode SiP is built into the digital cable.Interchangeable cable systemUse the digital Lightning cable or switch to the supplied 3.5mm analogue cable. Best for Lightning-equipped iPhone and iPad listening Apple Music lossless playback Portable wired HiFi without a separate dongle Listeners who also use 3.5mm sources Not ideal for USB-C-only devices without an appropriate connection Users requiring active noise cancellation Wireless Bluetooth listening EMiUZEK Buying Notes The built-in DAC and amplifier are in the Lightning cable, not inside the earpieces. Use the 3.5mm cable for conventional headphone outputs; high-resolution decoding then depends on the source device. NHB12 is a wired IEM and does not provide Bluetooth or active noise cancellation. Frequently asked questionsDoes it need an external DAC?No when using the supplied Lightning DAC/amplifier cable with a compatible device.Can it connect to a 3.5mm player?Yes, use the supplied 3.5mm cable.Does it support 192kHz / 24-bit audio?Yes, through the compatible digital cable and playback software.Does it have active noise cancellation?No. Isolation is provided by the in-ear fit.Can the cable be replaced?Yes, it uses an interchangeable 2-pin cable system. HOW TO CONNECTLightning Apple DeviceSource: iPhone / iPad with LightningConnection: Supplied Lightning DAC cableOutput: 2-pin IEM connectionTarget: NHB12 earpiecesPortable Music PlayerSource: DAP / portable DACConnection: Supplied 3.5mm cableOutput: Analogue headphone outputTarget: NHB12 earpiecesDesktop AudioSource: DAC / headphone amplifierConnection: 3.5mm headphone outputTarget: NHB12 earpieces Technical Specifications Feature Specification Product type Wired in-ear headphones with digital DAC cable Driver 10.2mm dynamic driver Digital playback Up to PCM 192kHz / 24-bit Amplification Questyle Current Mode SiP in digital cable Digital connection Apple Lightning, MFi certified Analogue connection 3.5mm Earpiece cable interface Detachable 2-pin Wireless / ANC Not included What's in the box Questyle NHB12 earphones Lightning DAC/amplifier cable 3.5mm analogue cable Ear tips Carrying case Product documentation Download CenterAccess product manuals, firmware updates, and additional support resources.Download CenterAdditional Product Content📊 Comparison: Which Lightning HiFi Setup Is Right for You?Choose NHB12 when you want genuine 192kHz/24-bit Lightning playback without a separate dongle; choose basic Lightning earphones for simplicity and calls, or a separate DAC plus IEM when upgrade flexibility matters most. Feature Questyle NHB12 Basic Lightning Earphones IEM + External Lightning DAC Core buying reason Integrated high-resolution Questyle system Lowest complexity and cost Maximum component choice Maximum digital playback Up to 192kHz / 24-bit Typically limited below 192kHz Depends on the selected DAC DAC / amplifier Built into the Lightning cable Built into the cable Separate dongle Driver 10.2mm dynamic driver Model dependent Choose any compatible IEM 3.5mm source use Included interchangeable cable Usually unavailable Depends on the IEM cable Pocket complexity One cable, no extra dongle One cable Extra DAC and connection Upgrade flexibility Replaceable 2-pin cables Low Highest Best choice when You want a refined one-cable Lightning HiFi solution You mainly need calls and casual listening You want to choose and upgrade DAC and IEM separately

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Questyle NHB15 is a USB-C true-lossless in-ear headphone system with an integrated digital DAC/amplifier cable for compatible phones, tablets and computers.It supports up to 192kHz / 24-bit playback, uses Questyle Current Mode technology and includes a replaceable 3.5mm cable for conventional analogue sources. Why it stands outUSB-C true-lossless connectionConnects directly to compatible USB-C devices without a separate headphone dongle.192kHz / 24-bit playbackSupports high-resolution PCM playback from compatible hardware and software.Current Mode DAC/amplifier cableQuestyle’s low-power Current Mode SiP provides digital decoding and headphone drive.Replaceable dual-cable designSwitch between the supplied USB-C digital cable and conventional 3.5mm analogue cable. Best for USB-C phones, tablets and computers Portable high-resolution wired listening Users wanting digital and 3.5mm compatibility Low-latency wired music and video use Not ideal for Users specifically requiring active noise cancellation Wireless Bluetooth listening Lightning-only devices without a compatible adapter EMiUZEK Buying Notes NHB15 is a wired USB-C true-lossless earphone; the official guide does not specify active noise cancellation. USB-C audio compatibility depends on the connected device supporting digital USB audio. Use the supplied 3.5mm cable for analogue sources; decoding quality then depends on the source. Frequently asked questionsDoes NHB15 have active noise cancellation?No ANC function is specified in Questyle’s official NHB15 guide.Does it need a separate DAC?No when using the supplied USB-C digital DAC/amplifier cable with a compatible source.Can it connect to a 3.5mm output?Yes, use the supplied 3.5mm cable.Does it support 192kHz / 24-bit?Yes, with compatible USB-C hardware and playback software.Can the cable be replaced?Yes, the cable system is replaceable.Does it use Bluetooth?No, it is a wired earphone system. HOW TO CONNECTUSB-C Phone or TabletSource: Compatible USB-C mobile deviceConnection: Supplied USB-C digital cableTarget: NHB15 earpiecesUSB-C ComputerSource: PC / Mac / compatible computerConnection: USB-C audioTarget: NHB15 earpiecesAnalogue PlayerSource: DAP / DAC / headphone amplifierConnection: Supplied 3.5mm cableTarget: NHB15 earpieces Technical Specifications Feature Specification Product type USB-C true-lossless wired in-ear headphones Maximum digital playback PCM 192kHz / 24-bit Amplification Questyle Current Mode SiP in digital cable Digital connection USB-C Analogue connection 3.5mm Cable design Replaceable Included ear-tip sizes XS, S, M, L and XL Bluetooth / ANC Not specified / not included What's in the box Questyle NHB15 earphones USB-C digital cable 3.5mm to 2-pin cable Five pairs of ear tips: XS, S, M, L and XL Leather carrying case Quick-start guide Warranty card Download CenterAccess product manuals, firmware updates, and additional support resources.Download CenterAdditional Product Content📊 Comparison: Which USB-C IEM Setup Is Right for You?Choose NHB15 for a ready-to-use 192kHz/24-bit Current Mode system with both USB-C and 3.5mm cables; choose MOONDROP MAY for app-based DSP tuning, or a separate DAC plus IEM for maximum upgrade freedom. Feature Questyle NHB15 MOONDROP MAY IEM + External USB-C DAC Core buying reason True-lossless Current Mode cable system USB-C DSP tuning at a lower price Maximum component flexibility Digital connection USB-C DAC/amplifier cable USB-C DSP cable Separate USB-C DAC Maximum stated playback 192kHz / 24-bit DSP-focused; not sold primarily on 192kHz playback Depends on the selected DAC Driver design Questyle-tuned IEM system 10mm dynamic + 6mm planar Choose any compatible IEM Sound adjustment Hardware-focused fixed tuning MOONDROP app DSP presets and tuning Depends on DAC, app and IEM 3.5mm cable Included Requires a separate compatible cable Usually available through the IEM cable ANC No No Usually no Best choice when You want high-resolution plug-and-play plus analogue flexibility You prefer DSP experimentation and value You want to upgrade the DAC and IEM independently

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