EWA Q-20 Power Amplifier

EWA Q-20 Power Amplifier

The EWA Q-20, like low power valve amplifiers, is capable of stunning musicality and presence in the right system. The SECA based circuit consists of a SECA (Single Ended Class A) driver stage, and a powerful output stage that operates in class A/B via a pair of precision matched output devices on each channel.


Producing thirty five Watts RMS total output into 8 Ohms, partner the Q-20 with even fairly efficient loudspeakers and you will be treated to the full EWA experience. This includes a truly expansive mid-range with exquisite detail retrieval, hanging in a dense and stable sound-stage. Treble is notably clear and defined, without any leaning toward harshness or bite, and with a properly rich tone. Bass is linear and very, very quick with good warmth and slam. In bass control particularly the Q-20 excels over similarly low output valve amplification.

The Q-20 is an amplifier which will leave you wondering how it does all this in such a small box, without becoming really, really hot. It is not class D, it does not cheat; Colin Wonfor knows his amplification and the Q-20 is an excellent showcase for its sophistication and efficiency in the twenty first century. The Q-20 may not feature the outright power of a Claymore, but it is (when used with it's matching pre-amp) capable of finer detail and imaging.

Captive mins lead fitted as standard.


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Home of the EWA cable system and SECA technology for amplifiers, by Colin Wonfor.  Contact us: info@ABCaudio.biz.  All text and images copyright 2021. ABCaudio, United Kingdom.