The Glow One is a single-end tube amp using one 6BQ5/EL84 per channel at 3.5 watts output. Input/driver tube looks like a 12AT7. I have a similar custom-made amp like it using a 6BG6 pentode for about 7 watts and one 12AT7 driving both output tubes. Nothing new here. These simple circuits were used in table radio's in the 1950's. No feedback and at clipping 5% harmonic distortion.
Has anyboyd used this amp, your thoughts on it
Looking to buy this amp maybe, it's available on eBay, china hifi, etc. I'm looking for something that is tubes, a headphone amp, and can play speakers all in one. I have found one review but the guy seemed like he didn't know what he was talking about. Love to hear your thoughts or other suggestions.
Showing 3 responses by jasonbourne71
@jond : Since it has one output tube per channel it will of course stay entirely in Class A operation. Class AB requires a pair of tubes/transistors driven by a phase-splitter circuit. |