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Classic gear from yesteryear; vintage audio standing the test of time.

RE: fisher tube rectified integrated EL84 amps

According to the service manual linked below, the early Fisher X101 used 3 12AX7's and 3 7025's. So, essentially 6 12AX7's along with the 7189 outputs and the 5AR4 rectifier. While the X100 uses 4 12AX7's and 2 12DW7's (7247)in the preamp section. The 7247 is a dual triode with each bottle being half a 12AX7 and half a 12AU7 inside. You can search here for posts about the benefits of this. I have no idea if the transformers are the same between the two models or not. I have never heard one of the early x-101's but I do have the X-100...
good luck
--Matt
"When you think everything is someone else's fault, you will suffer a lot."
--Dalai Lama


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