Here's my build blog with more details and pictures:
http://randaji.blogspot.com/
"The Marv" uses 6B4G triodes, fixed bias, with a 6SL7 driver with no cathode bypass cap.
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"The Marv II" uses 6V6 pentodes, auto bias, with a 6SN7 driver.
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Both employ an R-Core power transformer, hexfred HT rectification, Cap-Choke-Cap filtered with low ESR Mallory's. I rigged a 3-position power switch with a thick film resistor to drop the mains for the middle "standby" setting.
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Sound wise I'm quite happy. I held a listening party with 3 buds, 4 pair of Klipsch (KG3.2, KG4, Cornwall II, La Scala) and one pair of Linn, and 4 other amps (Linn, Carver, Scott Stereomaster Tube and Cary Audio SE-1 with 300B's). The Cary Audio was the only amp that could hold a candle to either of mine. It certainly had more power. Most of us agreed mine had better imaging and dynamics. The Marv II (6V6) has a nicer tonal balance. The Marv (6B4G) has a bit less bottom but cleaner/sweeter overall and the spectrum analysis proves it.
