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Maybe so.

The hi-fi guys would have liked the 6BQ because it was easier to drive and physically small.  By that time, they were seriously cheaping out on their mid-market gear, and you can build a nice compact little amp with pentode EL84s, driven by a single stage from line level, and advertise it as a 35w piece.  I started doing this stuff gleaning iron and other parts from old receivers and amps, and so many corners were cut in the design and implementation of those later low-line pieces it's amazing.

I first heard 6V6s in a guitar amp, and that's why I decided to use it.  I think the guitar guys liked them because they're rugged.  That said, the iron for my first example Machine was from a Harmon Kardon hi-fi receiver. Lousy iron, by the way; output transformers about the size of a ST-70 choke.

An interesting point about the bass, I hadn't heard that; I just a few weeks ago measured the first new-iteration commercial Machine, and it's 1dB down at 10Hz, so there's definitely no problem with bass capability in the device, if the other circuit components are up to snuff.

Aloha,

Poinz



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