QuestyleCMA800PusedQuestyle Audio CMA800P – Highend Line PreampCMA800P headphone amplifier (retail price 3.125 $). World-class line preamp. ACCESSORIES included: power cable, user manual, test chart / measuring protocol CONDITION Overall very good conditio...1600.00

Questyle Audio CMA800P – Highend Line Preamp [Expired]


no longer for sale

CMA800P headphone amplifier (retail price 3.125 $).

World-class line preamp.

ACCESSORIES

included: power cable, user manual, test chart / measuring protocol

CONDITION

Overall very good condition 9/10.

More info: https://www.questyle.com/en/product/CMA800P


CURRENT-MODE AMPLIFICATION

State-of-the-art Current-Mode Amplification technology with massive power to drive difficult headphones. Read more about this technology: https://www.questyle.com/en/technology

Current Mode Amplification , referring to a Current Mode Audio Amplifier, is a patented technology of Questyle Audio. It is a state-of-the-art technology of audio amplification different from the traditional audio amplifier. As the "engine" of audio system, Current Mode Amplification, featuring a fully discrete and topological structure, achieves ultra-high sound performance close to recording scene that makes audience truly moved. Meanwhile, based on Current Mode Amplification technology, users can get much better listening experience than common devices even they match with their own headphones or speakers rather than the original collocation.

Current Mode Amplification features the use of transistors to amplify and a fully discrete structure, to wit: voltage input and output, while the core amplification takes place in the current domain operating in a pure Class A state. It is completely different from the traditional voltage mode amplifier in the structure of the amplification circuit. Current-mode audio amplifiers affect the speed and bandwidth of the transistor-level capacitance between the low impedance nodes, not only completely eliminates the transient intermodulation distortion (TIMD), but can easily attain ultra-high bandwidth (full power bandwidth of 500kHz ) and ultra-low distortion (lower than 0.0002% THD+N, challenging the physical limits of audio testing). The Current Mode Amplification technology can be used for amplifiers of any power level (10mW-2000W) and of any size (thousands of square centimeters for some professorial amplifiers).

MORE INFORMATION

https://www.questyle.com/en/product/CMA800P


SPECIFICATIONS

  • Finish: silver
  • Chassis Material: CNC machining aluminum
  • Dimension: 12.99"(330mm)[W]×7.87” (200mm)[D]×1.38"(55mm)[H]
  • Weight: 111oz (3.15kg)
  • Working State: pure Class A
  • Power Supply: 100-120V or 220-240V switchable
  • Power Consumption: 9W

AUDIO PERFORMANCE
  • Gain: High gain 6dB / Low gain 0dB
  • Max Output Amplitude: 13Vrms, full-balanced mode / 6.5Vrms, unbalanced mode
  • SNR: 131dB,full-balanced mode / 124dB, unbalanced mode
  • THD+N: 0.00021% @1kHz, 10kΩ, full-balanced mode / 0.00023% @1kHz, 10kΩ, unbalanced mode
  • Frequency Response: DC-100kHz (+0,-3dB ) ( Input low-pass filter is built in.)
  • Input Impedance: 2.9kΩ
  • Input : stereo XLR x1 pr, stereo RCA x1 pr
  • Output: stereo XLR x1 pr, stereo RCA x1 pr
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