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.

Colin Wonfor has refined his SECA (Single Ended Class A) derived amplifier circuit over many years. All EWA amplifiers incorporate this unique technology.

Click the orange EWA icon for further information.