My gut feeling is that the Glow is a good sounding SEP (single ended pentode, el84) and likely a step above the Dennis Had offerings. The Glow weighs 14.3 pounds, uses small amounts of NFB anc has solid state rectification. The Dynamo weighs 22 pounds, zero NFB and is tube rectified. The Dynamo's 50% weight gain is in all likelihood bigger and heftier transformers. As had been noted before, transformer quality and capacity can make or break these single ended amplifiers. It would be very worthwhile to compare these two differently designed amplifiers in the same system. Design differences aside, I'd like to hear what distinguishes one from the other.
Charles,
Charles,