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    Questyle CMA Fifteen DAC & Headphone Amplifier

    🚚 Order within the next 2 hours, 15 minutes for delivery by 22 Jun, 2024.


    At its core, Current Mode Amplification uses current, instead of voltage, to amplify audio signals. It is a state-of-the-art technology in audio amplification, leading to tremendous performance differences when compared to traditional audio amplifiers. As the “engine” of the audio system, Current Mode Amplification features a fully discrete and topological structure, and can achieve ultra-high sound performance that reproduces music so faithfully, it feels like you are in the original recording room. Using Current Mode Amplification technology, listeners can attain a much better listening experience, even when using consumer-grade headphones and speaker systems.


    Current Mode Amplification Meets Current mode DAC=Current Mode²

    After 3 years of pre-research with ESS, Questyle selected the flagship DAC ES9038PRO, a decoding chip with the most powerful performance of any DAC invented to date, and jointly launched CMA Fifteen with ESS, supporting 32bit/768K and DSD 512 master band formats.


    Current Mode Amplification Meets Current mode DAC=Current Mode²

    To chase extreme performance, almost all high-end DAC chips from world-renowned manufacturers feature current-type output, which in most traditional amplifiers, is then coupled with an IV converter and classical amplifier architecture. But we at Questyle wondered: if the DAC’s output is already current-type, why don’t we also amplify that signal in current-mode? And that’s exactly what we did in the CMA Fifteen: we use the ES9038PRO current-mode DAC, and couple that to four Current Mode Amplifiers, which together operate in fully balanced mode to achieve “system-level lossless” purity.

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    CMA Fifteen supports MQA full decoding

    MQA is an award-winning British technology that delivers the sound of
    the original master recording. The master MQA file is fully authenticated and is yet small enough to stream or download.
    The CMA Fifteen includes MQA technology, which enables you to play
    back MQA audio files and streams, delivering the sound of the original
    master recording.

    CMA Fifteen supports LDAC Bluetooth

    As a global member of Sony, we equipped the CMA Fifteen with LDAC Bluetooth. LDAC™ is a new audio technology from Sony that allows you to enjoy high quality wireless audio via Bluetooth. With 3x data transmission rates as compared to traditional Bluetooth, LDAC provides an enhanced wireless listening experience for all your music.

    Bring Apple music lossless work to your high-end audio system

    The CMA Fifteen supports Apple Music Lossless. In addition to the classic USB Type-B input, the CMA Fifteen now also features a USB Type-C input to solve the wire conversion loss through cables. You can finally enjoy the new experience of high resolution lossless audio online, anytime, anywhere.

    *USB Type-C input has priority. When USB Type-C and Type-B are connected at the same time, the system will process the Type-C audio source by default.

    CMA Fifteen as a Preamp for your record player

    CMA Fifteen now comes with analog inputs on the back of the unit. Connect CMA Fifteen to your record player as a preamp, you can enjoy the best possible sound quality. If you ever get tired of your digital music, the CMA Fifteen can now also take you back to the golden age of records.



    AC Input: 100-120V / 220-230V (switchable)

    Power Consuming: <30W

    Size: 330*200*55mm (Jacks are not included.)

    Digital Input:

    USB x 2 (Including a high-priority USB Type-C interface and a USB Type-B interface.)

    PCM: 44.1khz-768kHz/32bit

    DSD: Native DSD 512; DOP DSD 256

    MQA: Full / Core decoder

    USB input supports UAC 2.0. It supports Win XP, Vista, Win7, Win8, Win10, Linux, MAC OS and other operating systems. It also can be connected to smartphones supporting OTG audio output.

    Note: Windows system under Win10 will need to install the ASIO driver developed by Questyle. Win10 system supports DOP DSD 256 without installing the driver, and supports Native DSD 512 with the driver installed.

    Optical Input x 1:  PCM: 44.1kHz~192kHz/24bit

    Coaxial Input x 1:  PCM: 44.1kHz~192kHz/24bit

    Bluetooth Input x 1: SBC, AAC, LDAC (At the highest level of 96kHz/24bit, 990kps/909kps)

    Analog Input: RCA x 1,  2Vrms standard level

    Headphone Amplifier Output Interface:

    6.35mm standard headphone jack  x1

    4-PIN balanced headphone jack    x1

    4.4mm balanced headphone jack   x1

    Note: You can set High/Standard bias through the BIAS switch on the front panel of the headphone amplifier, and set Standard/Low gain through the four Gain switches on the bottom of the headphone amplifier.

    Pre-Amp Output Interface:

    XLR  x 1

    RCA  x 1


    Pre-Amp Output Specs

    Max Analog Output Amplitude:

    RCA: 2V (Standard), Studio mode output up to14dBu

    XLR: 4V (Standard), Studio mode output up to 20dBu


    RCA: 0.0004%  

    XLR: 0.0003% 

    Frequency Response: ±0.2dB (DC-22kHz)@48kHz/24bit)


    RCA: >116dB  

    XLR: >119dB

    Headphone Amplifier Output Specs

    Max Output Power:

    6.35mm: 188mW @ 300Ω  1.5W @ 32Ω

    4.4mm balanced / XLR 4-PIN balanced: 765mW @ 300Ω  2W @ 32Ω


    <0.0003% @300Ω


    Frequency Response: ±0.2dB (DC-22kHz)@44.1kHz/24bit


     6.35mm: >117dB

    4.4mm balanced / XLR 4-PIN balanced: >120dB