Questyle CMA800P Headphone Preamplifier

Questyle CMA800P Headphone Preamplifier
Questyle CMA800P Headphone PreamplifierQuestyle CMA800P Headphone PreamplifierQuestyle CMA800P Headphone PreamplifierQuestyle CMA800P Headphone Preamplifier
(£1,957.50 Exc. VAT)
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  • Tuned to the STAX SR-009 Electrostatic Ear-speaker ystem
  • Gain:  internally switchable between High and Low
  • Max output amplitude : 13Vrms in full balance mode /6.5Vrms in single ended mode
  • Input impedance : 2.9K Ohm
  • Working status: Pure Class A
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Why buy from us?

Questyle CMA800P state of the art highend headphone preamplifier

Even the very best occasionally needs a little help.

Presenting the Questyle Audio CMA800P, commissioned by STAX, to bring out the full potential of their flagship SR-009 electrostatic ear-speaker system.

All hand made in Japan, and only available on a custom order basis, the pinnacle of the STAX line, the SR-009 provides sound with a natural clarity and exquisite detail demanded by the most discerning of audiophiles, but to bring out their full dynamics, to provide unprecedented deep, articulate and controlled bass, to remove that last bit of haze in the treble, a pre-amp was needed, and STAX felt that only Questyle Audio, had the technological expertise, and the auditory finesse to build it.

High-end audio gear, must prove itself with outstanding sound performance. The Questyle Audio CMA800P’s performance and specification will surprise audiophiles in many aspects: inherent from the patented Questyle Audio "Current Mode Amplification" design, it produces a distortion level as low as 0.00025% THD, linearly across the complete audible spectrum of 20Hz —20kHz, while producing no measurable TIMD. With performance like this, the Questyle Audio CMA800P can easily challenge all pre-amps in current production.

Together with the STAX SR-009 system, the Questyle Audio CMA800P awards the user, with a much greater than expected listening experience. Thanks to the Questyle Audio CMA800P & STAX SR-009 system’s high-resolution expression capabilities, the bass reproduction cannot be matched by dynamic headphones, and individual instrument pronunciation is clearly displayed without mixing, creating a powerful sound stage, ensuring each instrument has its precise playing position expressed. Have no fear that high frequencies will be overshadowed due to the bass performing so well, on the contrary, the high frequencies are greatly improved as well. Listeners will be thrilled at the richness of sound, especially the violin, which is often left thin and anaemic on other headphone systems. 

Of course the CMA800P is a fine piece of audiophile engineering and as such can be used as a pre-amp before other demanding headphone designs, along side Questlye Audio’s CMA800R, to bring the best out of them.

No-compromise, At All.

As the Questyle Audio CMA800P is aiming to push up STAX SR-009 into a much higher level position, its craftwork surely requires the most precise CNC tooling procedure. Most of the production work, on the Questyle Audio CMA800P, is processed under the highest standards of procedure. As a pure class A pre-amp, the Questyle Audio CMA800P employs a heat-leaking aluminium case to maintain proper temperature control. Even every screw is specially tooled by CNC machines, to ensure it is strong enough.

Shipping typically 1-2 days


  • Input: XLR; RCA
  • Output: XLR, Stereo RCA


  • Circuit Board: Plastic


  • Frequency Response: DC-100kHz(+0, -3dB) (built-in LPF filter)
  • Gain: Internally switchable between High and Low
  • Input impedance: 2.9K Ohm
  • Input Voltage: 100-120V/220-240V, Switchable
  • Max Output Amplitude: 13Vrms in full balance mode/6.5Vrms in single ended mode
  • Power Consumption: 9W
  • SNR: 131dB in full balance mode/124dB in single ended mode
  • THD+N Full balance mode: 0.00021% @1kHz, 10K Ohm
  • THD+N Single ended mode: 0.00023% @1kHz, 10K Ohm
  • Working Status: Pure Class A


  • Dimension: 330mm(W)x300mm(H)x55mm(L)

UK Delivery

  • FREE delivery via DPD Local By 12pm on orders to value over £300, including one hour delivery window service 'Predict & Follow My Parcel'.
  • Royal Mail Special Delivery By 1pm costs between £5.00 - £10.00 on orders to value under £300, dependent on weight.
  • Saturday or Sunday delivery available upon request for supplemental charge.

EU Delivery

  • £25 delivery charge 'Flat Fee' via DHL Europe by Road service (3-5 days) which provides comprehensive tracking of shipments online.
  • £60 delivery charge 'Flat Fee' via DHL Europe by Air service  (1-2 days) which provides comprehensive tracking of shipments online.

USA & Canada Delivery

  • Services based on your order being shipped to the U.S. and Canada are calculated as follows:
    £100 delivery charge 'Flat Fee' via DHL international 'Day Definite' service per parcel.
    Receiver is responsible for the payment of local Duties and Taxes.


  • Not all products are available for order into Europe, USA & Canada


  • Full manufacturer's warranty on all new purchases. Standard warranty is typically 2 years with some goods coming with 6 years manufacturer's warranty.
  • Goods purchased in UK and EU are covered by the Consumer Contracts Regulations.

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