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RE: How to use the 4P1L

Al,

Ok, Ok, I will listen. I liked your advice.

I will do as you suggest, do the 6AH4 first, then consider the 4P1L, so I will leave room in the chassis for two custom Ef Xfrs, which the 6AH4 does not need.

I've ordered parts for the 4P1L possibility, loctal sockets, resistors, and am "thinking" about a custom Ef XFR design, slightly starved as you suggest.

I can ( almost as easily ) convert to a Type 45 as a final tube.

In ALL cases, I am talking two stage and direct coupled. BTW, I've used ( and liked ) 12AY7s in the last few years.

The question becomes, will the Type 45 top the 4P1L when optimized? I think it may. Can a real triode beat a pentode triode-connected, both being DHTs?? Ha !! The Type 45 would win out in my mind, not having all those extra elements, and microphony .

For the musician audio friend in Quebec, I am sure the 6AH4 will be a NICE easy first amp build, DC two-stage for his tricked out A-7s. Thanks to you and Andy.

Andy's build is very good, and specific to the sensitivity of his speakers.

Jeff

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