(I posted the originally in Amps and Cabs, but thought this might be a better place...) I just bought an old Gibson GA35RVT powered by a pair of EH7591As. It sounds surprisingly good, especially for what it cost. I've heard that the EH7591As are considered somewhat dubious sounding, and was wondering if people think the JJs are a significant improvement. Ideally I'd like to try NOS, but can't justify the expense at this time. Thanks!