Questyle
Questyle CMA18 Portable
Questyle CMA18 Portable
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The Questyle CMA18 Portable provides high-quality sound through its advanced features. With its portability and sleek design, you can enjoy superior audio anywhere you go. Its advanced technology allows for a premium listening experience, making it the perfect choice for audiophiles and music enthusiasts alike.
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A Hi-Fi System for Smartphones and Laptops in a Portable Form
The CMA18 Portable was primarily designed to create a Hi-Fi systeem for smartphones and laptops,aiming to achieve performance comparable to top-tier desktop setups,within a portable size.

Design and Craftsmanship
Sandblasted aviation-grade aluminum surfaces with silver high-gloss buttons and side panels, custom Corning glass on both the front and back with a gradient dot pattern, and an RF signal suppressing coating give the CMA18 Portable a unique appearance while outlining its hardcore performance.We focus only on pure audio performance. When in use, the internal amber-colored LEDs blend perfectly with the glass cover, highlighting the unparalleled design of the CMA18 Portable.

Performance
CMA18 Portable incorporates four sets of patented PCT-class current-mode SiP chips, each with a peak power of up to 5W and peak current of 2A, delivering robust driving power.Gain settings, coupled with high-energy current-mode amplifier technology, ensure powerful and flexible performance.

Top-tier Sound & Precise Drive: CMA18 Portable with XMOS XU316 Platform & AK4493 DAC Chip
The latest XMOS XU316 platform combined with the AK4493 DAC chip supports HD D/A converting up to PCM768/DSD512. Four sets of self-developed current-mode PCT patented SiP chips, CC630/CA630, ensure the best thrust and lowest power consumption in the industry, coupled with 4.4mm headphone output and high/low gain mode switching, unlocking the full potential of all IEMs and top-tier over-ear headphones.Optional 3.5mm/4.4mm headphone jacks and gain switching ensure precise matching with any headphones.

Clean from the Source
The CMA18 Portable's 4300mAh lithium battery power management system ensures the purest soundquality and isolates top-tier performance from the power supply dependence of smartphones and PCs.Lithium battery power management system:4300mAh.Battery life>10h

CMA18 Portable: MFI Certified, Fully Compatible with Apple and All Devices
CMA18 Portable is MFI certified, joining the mobile true-lossless era with Apple.CMA18 Portable is compatible with USB-A, USB-C, and Lightning interfaces, available for all smartphones and PCs.

Analog Input Recording Function
The CMA18 Portable has two stereo line-in inputs - 3.5mm (AUX IN) and 4.4mm (BAL IN). They can be connected to any audio equipment that has line-out analog outputs, including turntable systems, pre-amps, mixing consoles, and more. Once connected, the CMA18 Portable is capable of functioning as an external, lossless, high-performance analog-to-digital (ADC) recording device for either of these inputs. It also allows the user to simultaneously monitor the input during the recording process via the 3.5mm or 4.4mm outputs. How to use the recording function: When the CMA18 Portable is set to either AUX IN or BAL IN mode and connected via USB to a host device (any phone, tablet, or computer, etc that ensures the recording over USB sound cards), both the USB connection and REC indicator lights will appear, signaling that the recording function is enabled. There are no special requirements for recording software as long as it supports recording via external USB sound card/audio interface.

Expandability
Given that high-resolution lossless streaming is accessible on smartphones and PCs, we have also considered the needs of audiophiles, as well as those interested in recording and musical production.
The user-friendly interface and powerful performance of CMA18 Portable - combined with Questyle's released 3.5mm-RCA and 4.4mm-XLR cables - enable the CMA18 Portable to connect to 2-channel Hi-Fi devices, bringing wonderful lossless music to your home. It also allows recording and musical production professionals to connect to monitor speakers and mixing consoles on-site.
How to use the recording function: When the CMA18 Portable is set to either AUX IN or BAL IN mode and connected via USB to a host device (any phone, tablet, or computer, etc that ensures the recording over USB sound cards), both the USB connection and REC indicator lights will appear, signaling that the recording function is enabled. There are no special requirements for recording software as long as it supports recording via external USB sound card/audio interface.
Specification
USB Playback
Maximum support PCM768kHz/32bit,
DSD Native: DSD64, DSD128, DSD256, DSD512,
DSD Dop: DSD64, DSD128, DSD256
Supports UAC 2.0
Supports: Win XP / Vista / Win7 / Win8 / Win10 / Win11
/ Linux / Android / HarmonyOS / macOS and iOS
USB Recording
Fixed 48kHz/32bit stereo recording
Supports: Win XP / Vista / Win7 / Win8 / Win10 / Win11
/ Linux / Android / HarmonyOS / macOS and iOS
OPTICAL
Supports 44.1kHz, 48kHz, 88.2kHz, 96kHz,
192kHz/24bit
BLUETOOTH
Supports SBC/AAC/apiX/apiX-HD/LDAC DJA Convert
Maximum headphone output power
BAL:1000mW@32Ω
THD+N
<0.0003%@20mW, 300Ω
SNR
>120dB
Playback battery life
>10hours
Maximum charging current
2A
Charging time
~3.5 hour