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Arylic Up2Stream Amp 2.1 is a WiFi streaming amplifier designed for 2.1 stereo systems with built-in amplification for passive speakers and a dedicated subwoofer output. With 50W × 2 stereo power, 100W subwoofer output, AirPlay 2, Spotify Connect, TIDAL Connect, and multi-room support, it provides a complete wireless audio solution for music, movies, and home entertainment systems. Why it stands out Complete 2.1 Streaming Amplifier Up2Stream Amp 2.1 combines wireless streaming, stereo amplification, and dedicated subwoofer output in one compact device, making it easy to build a complete 2.1 audio system. Wireless HiFi Music Playback Enjoy high-resolution music streaming from network sources and popular streaming services with flexible wireless connectivity. Powerful Stereo Amplification The built-in Class-D amplifier delivers 50W × 2 output for passive speakers, providing clean and dynamic sound for home stereo systems. Flexible Audio System Expansion With speaker output and dedicated subwoofer connection, Up2Stream Amp 2.1 supports desktop audio, living room systems, and compact home entertainment setups. Best for Bookshelf speaker systems with subwoofer Desktop 2.1 audio setups Living room stereo systems Wireless HiFi upgrades Compact home entertainment systems Not ideal for Users looking for a simple Bluetooth-only amplifier Users requiring high-power amplification for large speakers Users wanting built-in music storage or CD playback FAQ Can Arylic Up2Stream Amp 2.1 directly power passive speakers? Yes. The built-in 50W × 2 Class-D amplifier allows direct connection to passive speakers without an additional power amplifier. Does Arylic Up2Stream Amp 2.1 support a subwoofer? Yes. It includes a dedicated subwoofer output with up to 100W power support for building a complete 2.1 audio system. Does Arylic Up2Stream Amp 2.1 support AirPlay 2? Yes. It supports AirPlay 2 for wireless streaming from compatible Apple devices. Does Arylic Up2Stream Amp 2.1 support Spotify Connect and TIDAL Connect? Yes. It supports direct network streaming through compatible music services. Can Arylic Up2Stream Amp 2.1 be used in a multi-room system? Yes. Multiple compatible Arylic streaming devices can be connected through the network for synchronized or independent playback. What speakers work best with Arylic Up2Stream Amp 2.1? It is suitable for bookshelf speakers and compact passive speakers that match the amplifier output and impedance requirements. Can Arylic Up2Stream Amp 2.1 be used for TV audio? Yes. It can integrate with TV audio systems through compatible digital or analog connections. HOW TO CONNECT 2.1 Stereo System Setup Source icon: Streaming ServiceSource: AirPlay / Spotify / Network MusicConnection: WiFi / EthernetOutput connection: Speaker Output + Subwoofer OutputTarget icon: Speakers + Powered SubwooferOutput: Complete 2.1 Audio System Note: Build a wireless stereo system with enhanced bass performance. Desktop Audio Setup Source icon: Computer / SmartphoneSource: Digital MusicConnection: Network StreamingOutput connection: Speaker OutputTarget icon: Bookshelf SpeakersOutput: Desktop HiFi System Note: Create a compact high-quality desktop audio setup. Living Room Audio Setup Source icon: TV / Streaming DeviceSource: Digital Audio SourceConnection: Optical / NetworkOutput connection: Speaker + Subwoofer OutputTarget icon: Home Audio SystemOutput: Stereo Entertainment System Note: Upgrade traditional speakers with modern streaming features. Technical Specifications Amplifier Feature Specification Amplifier Type Class-D Stereo Output Power 50W × 2 Subwoofer Output Power 100W System Type 2.1 Stereo Amplifier Speaker Type Passive Speakers Streaming Feature Specification WiFi Supported Ethernet Supported AirPlay 2 Supported Spotify Connect Supported TIDAL Connect Supported DLNA Supported Multi-room Audio Supported Audio Resolution Up to 24-bit / 192kHz Connectivity Feature Specification Optical Input Supported RCA Line Input Supported Subwoofer Output Supported Bluetooth Supported Recommended System Setup Setup Connection 2.1 Music System Streaming Source → Up2Stream Amp 2.1 → Speakers + Subwoofer Desktop Audio Computer / Phone → Up2Stream Amp 2.1 → Bookshelf Speakers Living Room System TV / Streaming Source → Up2Stream Amp 2.1 → Stereo System What's in the box Arylic Up2Stream Amp 2.1 ×1 Power Adapter ×1 Speaker Cable ×1 User Manual ×1 Additional Product Content Arylic Streaming Amplifier Comparison Feature Up2Stream Amp V4 Up2Stream Amp 2.1 Up2Cast Amp Product Position Streaming Amplifier 2.1 Streaming Amplifier Premium Streaming Amplifier Stereo Output 50W × 2 50W × 2 50W × 2 Subwoofer Output No Dedicated Output 100W Subwoofer Output Supported Audio Resolution 24-bit / 192kHz 24-bit / 192kHz 24-bit / 192kHz AirPlay 2 Supported Supported Supported Spotify Connect Supported Supported Supported TIDAL Connect Supported Supported Supported Multi-room Supported Supported Supported Best Focus General wireless stereo Stereo + Subwoofer system Premium wireless HiFi

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AudioCast AMP50 is a compact wireless multi-room stereo amplifier that adds network streaming to passive speakers. Its 2 × 50W/4Ω Class-D output, wired and wireless networking, and local digital/analog inputs create a simple all-in-one music system. Why it stands out Streaming amplifier in one compact unit Combines network music playback and stereo speaker amplification without requiring a separate streamer or power amplifier. 50W-per-channel speaker drive Delivers more useful output for bookshelf, ceiling and efficient floorstanding speakers than entry-level mini amplifiers. Flexible wired and wireless sources Accepts Wi-Fi, Ethernet, Bluetooth, optical, line-level and USB sources for a broad range of home-audio installations. Expandable multi-room playback Works with compatible AudioCast devices for synchronized or independent playback across multiple rooms. Best for Bookshelf speaker systems Ceiling speaker installations Living-room stereo upgrades Multi-room AudioCast systems Users replacing a separate streamer and amplifier Not ideal for Very low-sensitivity speakers requiring high current Users needing HDMI ARC Headphone listening systems Systems requiring balanced XLR connections Product Details and Connection Views EMiUZEK Buying Notes AMP50 is an integrated streaming amplifier and can directly drive compatible passive speakers. Its optical input is intended for two-channel PCM audio; set a connected TV to PCM stereo. A powered subwoofer requires a suitable line-level connection; do not connect a passive subwoofer directly. Frequently asked questions Can AMP50 drive passive speakers directly? Yes. It provides stereo speaker outputs and is designed for 4Ω/8Ω passive speakers. Does it need a separate streamer? No. Network streaming is built in. Can it connect to a TV? Yes, through the optical or line input when the television provides compatible stereo PCM audio. Does it support Bluetooth? Yes. Bluetooth is available as an audio input. Can it play from a USB drive? Yes. The USB connection supports local music playback. Does it have a headphone output? No. It is primarily a speaker amplifier. HOW TO CONNECT Passive speaker system Source: Streaming servicesConnection: Wi-Fi or EthernetOutput connection: Speaker outputTarget: Passive speakers TV stereo system Source: TelevisionConnection: Optical PCMOutput connection: Speaker outputTarget: Passive speakers Local source system Source: CD player or analog sourceConnection: Line inputOutput connection: Speaker outputTarget: Passive speakers Technical Specifications Feature Specification Product type Wireless multi-room stereo amplifier Speaker power 2 × 50W into 4Ω; over 30W/channel into 8Ω Network 2.4GHz Wi-Fi; 10/100 Ethernet Bluetooth Bluetooth 5.0, SBC Inputs Wi-Fi, Ethernet, Bluetooth, optical, line input, USB playback Streaming AirPlay, DLNA, Spotify Connect, QPlay Audio formats APE, FLAC, MP3, WAV, AAC/AAC+, WMA, ALAC, AIFF Power supply 32V/4.75A Additional Product Content 📊 Comparison: Which Compact Streaming Amplifier Is Right for You? Choose AMP50 for a balanced combination of speaker power and source flexibility; choose AMP-i20 for discreet background-audio installations, or AMP80 when higher speaker output is the priority. Feature AudioCast AMP50 iEAST AMP-i20 iEAST AMP80 Product position Compact all-purpose streamer amplifier Mini installation amplifier Higher-power streaming amplifier Power into 4Ω 2 × 50W 2 × 20W 2 × 80W Local audio inputs Optical and line input Streaming/Bluetooth focused Coaxial and line input Ethernet Yes Yes Yes Best use Flexible home stereo Ceiling/background audio More demanding passive speakers

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Fosi Audio P4 is a compact solid-state stereo preamplifier that brings three RCA sources under one volume and tone-control stage.Its motorized analog volume control, remote operation, three-level gain, tone bypass and separate pre-out make it a practical partner for power amplifiers and powered subwoofers.Why it stands outThree-source analog hubThree RCA inputs allow convenient switching among a DAC, streamer, CD player or other line-level source.Motorized analog volume controlThe remote-driven analog potentiometer provides smooth level adjustment without replacing the analog signal path with digital volume control.Flexible tone and gain adjustmentBass, treble, bypass and three gain levels help match different source levels and listening preferences.Low-noise preamplifier performanceHigh SNR and low THD+N support clean system control in a compact all-metal chassis.Best for Systems with multiple line-level analog sources Power amplifiers needing source selection and remote volume Powered speaker systems 2.1 systems using the volume-controlled pre-out Not ideal for Driving passive speakers directly Turntables without a built-in or external phono preamp Users needing Bluetooth or digital audio inputs EMiUZEK Buying Notes P4 is a preamplifier and cannot directly power passive speakers. All three inputs are line-level RCA; a standard turntable requires a phono preamp. Pre-out is volume controlled and suitable for compatible powered subwoofers or powered speakers. Frequently asked questionsCan P4 drive passive speakers?No. Connect its RCA output to a power amplifier that drives the passive speakers.Does P4 include Bluetooth?No. It is an analog RCA preamplifier.Can I connect a turntable?Only if the turntable has a built-in phono stage or you use an external phono preamp.What is pre-out for?It provides a volume-controlled line-level output for compatible powered speakers, a powered subwoofer or downstream equipment.Can tone controls be bypassed?Yes. The bypass function provides a more direct signal path when tone adjustment is not needed.What does the gain setting do?The three gain levels help match differing source output levels and system sensitivity.HOW TO CONNECTPower amplifier systemSource: DAC, streamer, CD player or phono preampConnection: RCA inputOutput: RCA outputTarget: Power amplifier → passive speakersNote: Select the source and use P4 for volume control.Powered speaker systemSource: Up to three line-level sourcesConnection: RCA inputOutput: Pre-out or RCA outputTarget: Powered speakersNote: Begin with conservative volume settings on both devices.2.1 systemSource: Line-level sourceConnection: RCA inputOutput: RCA output + pre-outTarget: Power amplifier and powered subwooferNote: Use pre-out for the powered subwoofer and confirm crossover settings.Technical SpecificationsAudio performance Feature Specification Product type 2.0-channel solid-state preamplifier SNR ≥110dB Dynamic range ≥110dB THD+N ≤0.003% Crosstalk ≥105dB Noise floor ≤9μV Frequency response 20Hz–20kHz (±0.1dB) Tone adjustment ±12dB Connectivity and power Feature Specification Inputs RCA × 3 Outputs RCA, pre-out Gain adjustment +3dB / +6dB / +9dB Volume control Motorized analog potentiometer with remote Power supply DC 12V / 1.5A Recommended System Setup Setup Connection Stereo separates Sources → P4 → Power amplifier → Passive speakers Powered speakers Sources → P4 → Powered speakers 2.1 separates Sources → P4 → Power amplifier + powered subwoofer Additional Product ContentFosi Audio product comparisonCompare the main Fosi Audio preamplifier choices by source support, outputs and the features that most affect system design. Feature P4 P3 ZP3 Product position Compact analog preamp Tube preamp + headphone amp Balanced high-performance preamp Analog inputs RCA × 3 RCA RCA × 2, XLR Wireless / digital inputs None Bluetooth 5.1 None Main outputs RCA, pre-out RCA, AUX RCA, XLR, sub-out Headphone output No 3.5mm No Speaker amplification No No No Tube stage No Yes, replaceable 5654W No Tone controls Bass and treble with bypass Bass and treble Bass and treble Remote control Yes No Yes THD+N ≤0.003% ≤0.02% ≤0.0007% SNR ≥110dB ≥103dB ≥115dB Best use Three analog sources and powered sub expansion Bluetooth tube preamp and headphones Balanced stereo system integration

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✨ EMiUZEK AMP D60: Multiroom Wireless Stereo Streaming Amplifier Board The EMiUZEK AMP D60 board is a versatile and powerful solution designed to transform any traditional speaker setup into a modern, wireless streaming audio system. It serves as the core component for DIY enthusiasts looking to build custom speakers or integrate multiroom capabilities into their existing passive speaker infrastructure. Key Features: Seamless Multiroom Streaming: Easily connect multiple devices across your home to play synchronizedWhy it stands outAudio resolutionHigh-Fidelity Stereo Output: Delivers clean, robust stereo sound, ensuring an excellent listening experience whether you are streaming high-resolution audio or popular music services.BluetoothWireless Connectivity: Features both WiFi (2.4G) and Bluetooth 5.3 connectivity, giving you flexible options for local and network streaming.Wi-Fi and streaming✨ EMiUZEK AMP D60: Multiroom Wireless Stereo Streaming Amplifier Board The EMiUZEK AMP D60 board is a versatile and powerful solution designed to transform any traditional speaker setup into a modern, wireless streaming audio system. Key Features: Seamless Multiroom Streaming: Easily connect multiple devices across your home to play synchronized audio or different music in different rooms, all controlled via a single app.Multi-roomIt serves as the core component for DIY enthusiasts looking to build custom speakers or integrate multiroom capabilities into their existing passive speaker infrastructure. Intuitive App Control: Manage your entire multiroom setup, select music sources, and adjust volume and EQ settings all through a user-friendly mobile application.Best for Custom audio builds OEM prototypes Upgrading an existing enclosure Users comfortable with wiring and integration Not ideal for Plug-and-play retail systems Installers without voltage and pinout experience Projects needing undocumented interfaces Product Details and Connection ViewsEMiUZEK Buying Notes This is a DIY module; verify supply voltage, pinout, grounding and enclosure clearances before power-up. Bundle contents differ by variant; accessories are included only when named in the selected bundle. Do not connect or disconnect boards while powered. Frequently asked questionsCan I use this amp in an active configuration, meaning one channel places highs for the tweeter, and the other plays lows for the woofer?Yes, that is available.How can I stream from PC wirelessly?You can use any software that supports Airplay, DLNA or UPnP protocols. Such as iTunes, Muiscbee, Foobar2000 etc.Can we listen to a radio with a personalized link? If yes, how ?Yes, this is available. There are 2 ways you can do this.1. 4STREAM APP> Internet radio> Click on the menu icon on the top right corner.>You should see a "Custom URL" button, then you can put in your link there and listen to the radio that URL points to.2. Entry web control>Radio>register your account>my stationCan a Google Home stream to this over wifi?Currently, Up2Stream Amp only support connecting Google Home or Alexa via Bluetooth or Line in.HOW TO CONNECTBasic board integrationSource: Supported power supplyConnection: Power and ground according to the board markingsOutput connection: Confirmed audio output to the next stageWireless source buildSource: Phone or network audioConnection: Wi-Fi or Bluetooth to the boardOutput connection: Board audio output to amplifier stageAccessory-board buildSource: Selected compatible expansion boardConnection: Confirmed header or cable connectionOutput connection: Required input or output interfaceTechnical Specifications Feature Specification Connectivity WiFiIEEE802.11 b/g/n 2.4GBluetooth5.0 SBC/AAC, 15M, BT ReceiverWired NetworkEthernet Single 10/100M RJ45 ProtocolsAirPlay, DLNA, UPnP, Spotify Connect, Qplay Interface Power Input12V-24V/DC in12V-24V 2Pin ConnectorAnalog Input3.5mm Line Input (1 Vrms)4 pin connector Line Input (1 Vrms)Analog Output4 pin connector Line Out (1 Vrms)Speaker Out Digital InputMicro USB Input*SPDIF In pin connector I/O InterfaceLED pin connectorIR pin connectorButton pin connectorRotary encoder pin connectorGPIO pin connectorMono Out pin connector Sound Audio FormatDecoding up to 192khz/24bitOutput up to 44.1khz/16bit CD qualityMusic FormatFLAC/MP3/AAC/AAC+/ALAC/APE/WAV NASSupport NAS with DLNA supportSNR/THD+N91dB/0.03%, @1kHz 50W+50W 24V-4ΩUSB HostFor USB pen drive/stick, 1000 songs limited. Frequency response20Hz to 20kHz Speaker and Amplifier Stereo2x50W @ 4ohm load at 24V2x30W @ 8ohm load at 24V2x15W @ 8ohm load at 15VMono100W @ 2ohm load at 24V60W @ 4ohm load at 21V30W @ 8ohm load at 18V Speaker Impedance4-8ΩAmplifier ChipTPA3116D2 General and Accessory Working temperature0~40℃ Acessory220mm Internal WiFi Antenna x24Pin Phoenix ConnectorScrew DriverUser Manual Reset Button and LED Indicators Device onShort press once: Switch input modeLong press once: Switch offShort press twice: Disconnect current WiFi connection and enter paring mode (WiFi mode)；Disconnect current connected Bluetooth device (Bluetooth mode)Short press three times: Restore the factory settingsDevice offShort press: Switch on LED Indicators⚪White-WiFi & network mode:Flashing fast-device is bootingFlashing slow- waiting for WiFi connectionSolid- WiFi is connected🔵Blue-Bluetooth mode:Flashing slow- waiting for Bluetooth connectionSolid- Bluetooth is connected🟢Green-Line in mode🔴Red-USB mode🟡Yellow-connect to PC🟣Purple-Spdif in mode Additional Product ContentComparison: EMiUZEK Wireless Audio Boards Model Confirmed connections Best fit D10 2.4 GHz Wi-Fi, Bluetooth, AirPlay, DLNA, UPnP Basic DIY network-streaming core D30 USB, HDMI ARC, optical, RCA, subwoofer out, 5 V / 12 V TV, 2.1-channel and broad-I/O builds D50 Bluetooth 5.3, Micro-USB/battery power, USB sound-card mode Compact or portable Bluetooth/USB builds AMP D60 2.4 GHz Wi-Fi, Bluetooth 5.3 and amplified stereo output Embedded board that directly powers speakers

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