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

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


EWA M-50 Power Amplifier

The EWA M-50 is a power amplifier for all occasions. A sophisticated power supply and implementation of the EWA SECA circuit make the M-50 a fine flag bearer for EWA. Delivering its first five Watts of power in SECA, the M-50 goes on to produce over fifty Watts RMS into eight ohms, and a hundred Watts into four ohms. If you have no speakers, the M-50 might just drive a brick wall!

The SECA circuit is a essentially a hybrid design consisting of a SECA (Single Ended Class A) input driver stage, and a powerful output stage that operates in class A push/pull.

The M-50 is skilfully engineered to produce music of scale in a dense and stable soundstage. The M-50 has complete mastery over powerful dynamic swells whilst maintaining that stable stereo image. It has the  speed to present instantaneous transient events; this speed is also manifest in micro dynamics and textural detail, laying bare every nuance of a performance and revealing each intimate timbral facet of an instrument. The M-50 is a lens into a musical performance, whether you take it as a wide panorama or a tapestry of interrelated tiny details.

There is subtle warmth to this tone, and richness to the timbre that is both natural and right. But the EWA M-50 character isn’t dominated by being a class A amplifier, rather it’s all about the completeness, in the way reality is made of innumerable tiny events which add up to a real experience of the whole. Take the M-50 as you like it, for the whole or the details; it’s all there.