After plugging them in and letting them warm up for 10 minutes, Grover made several adustments to the bias current using his DMM and a couple of little knobs on the top of each chassis (handy to have those adjustments available). We plugged in the speaker cables to the 4 ohm taps,
Put Fleetwood Mac Rumours on the turntable, and we got down to listening......
At first blush the sound was a bit warmer than my ss amps, but the voices were much more natural sounding, and full of harmonics, in relation the ss amps made the voices more distant and a bit more hollow. The bass was kinda chocolatey and fat (did not really like it).
After listening for a while, Grover asked if there were 4 ohm speakers, I said I think they are 8 ohm, so we switched to the 8 ohm taps. Well that tightened up the bass right there. Much better control and impact. The sound was really good now. One thing these tube amps do very well is the highs. Very natural sounding cymbals, much better than the Odyssey monoblocks. Also there was better imaging and depth, a larger soundstage.
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