United Kingdom. EWA designs for cables and amplifiers, by Colin Wonfor.

All text and images copyright 2019 ABCaudio & Elsdon and Wonfor Audio

  • Q20. Power Amplifier


    EWA Power amplifier, Q-20.


    As with all EWA product, you have 30 days after delivery to use your product. You may return it (shipping is buyer's responsibility) for a full refund within this period.

    Q Bundle
    LS-5 Bundle
    • Specification

      Built to UK voltage, but can be set to operate elsewhere at manufacture.



      The input impedance is 22kΩ.

      Input sensitivity for full power is 1V providing 25W into 8 Ω both channels driven


      Power Rating

      25W/8Ω both channels

      40W/4Ω both channels

      Frequency Bandwidth 5Hz – 150kHz ±1dB

      Damping factor > 100

      Power Requirements

      Idle power less than 10W

      Power Supply

      The main PSU consists of a 120VA transformer and total bulk capacitance of 20,000µF @ 50V

    • Reviews