• Q-20-P Pre-Amplifier & Headphone Amp


    EWA Q-20-P pre-amplifier and headphone amplifier.


    Q Bundle


    Inputs: All inputs are specified for line level output of 1 Volt into 1 K Ohm.


    Line: Standard input for line level.

    • Input sensitivity 200mV typical
    • Frequency response: 10Hz - 100KHz, plus/minus 1dB


    Moving Magnet:

    • Standard loading 50 K Ohm with loading capacitance of 100pF
    • Input sensitivity is typically 5mV - 10mV
    • Frequency response typically 20Hz - 20KHz, plus/minus 0.5dB.


    Moving Coil:

    • Standard loading 100 Ohm - 470 Ohm with loading capacitance 1000pF.
    • Input sensitivity typically 100 uV
    • Frequency response typically 20Kz - 20KHz, plus/minus 0.5dB.




    Frequency response for various loads is specified for 1 Volt.

    • Minimum load 100 Ohm:16Hz - 100KHz
    • Nominal load 10 Ohm: 5Hz - 200KHz
    • High load 100 KOhm: 5Hz - 200KHz



    • SECA bandwidth 10Hz - 40KHz, min load 65 Ohm
    • Max output voltage (no load) 15V peak
    • 1V input = Peak output 4V


    Power Requirements:


    • On (idle) = under 5W


    Regulated power supples:

    • Plus/Minus 15V for SECA headphone stage and line output
    • Plus/Minus 20V & 18V for phono stage
    • Plus 5V standby
    • Plus 12V selection relays

    Contact us: info@ABCaudio.biz  United Kingdom. EWA designs for cables and amplifiers, by Colin Wonfor.

    All text and images copyright 2020. ABCaudio and Elsdon & Wonfor Audio.