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N-set AR300A Pics

2nd from the left. It is quite different to the other one (with the dirty pins). Only Crittle's has the inverted glass pip for support. On the other one Anode is set at a different hight and braced differently to make up for the lack of glass inversion. I wish I could give you a sound comparrison but this one has gone soft.

I'm just hooking up a test amp in which I can compare gm70 to 212. A friend is coming over on Saturday to do the evaluation with me.

I'll be using the same James transformers on 5k for GM70 and 7k for 212.

I have copper GM70's as well as the other type (is it really made of graphite?).

Won't it be interesting if the copper gm70 is up there with the 212's?


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