I've had a Spectron amplifier for several years, but purchased a Modwright KWA 150 amp about 4 months ago. The Spectron is a very good amplifier that I enjoyed with Aerial and Usher speakers. The Modwright IMO, however, is much more musical and engaging and allows me to enjoy listening to music at all volume levels. With the MW, I don't feel the need to increase the volume to get more information or more into the music as I do with some other amplifiers. It clearly does all the "audiophile" things, but more importantly, it just sounds right. I've had SET's and other fine solid state amplifiers, but the MW, at least to this point, is the finest amplifier I've used and works incredibly well with my Be-10's. Dan is also great to do business with and his customer service is as good as it gets.