Ecc801s Telefunken as direct replacement?

DPetrini · 6859

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Offline DPetrini

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on: July 13, 2024, 02:03:52 AM
Hi all, could i install above tubes as direct 12at7 replacement in my stereomour ii? Worth sonically or improvement vs ecc81 is just marginal? Thanxs

Daniel
Good hand at solder , badhead in electronics


Offline Paul Joppa

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Reply #1 on: July 13, 2024, 04:57:34 AM
Yes, the ECC801 is basically a 12AT7. It is primarily designed for long life, not for lower distortion. Two things that are audible are:

1) it withstands a lot of vibration, so can be expected to be relatively free of microphonics, and

2) the cathode won't develop an interface resistance, making it likely to be quieter and maintain its performance as it ages. This is often associated with tubes that are "better sounding," so there may be some magic beyond the known technical specs.

Paul Joppa


Offline DPetrini

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Reply #2 on: July 13, 2024, 09:17:13 AM
Thanxs a lot Paul, appreciated you found the time to respond. Cristal clear!

Daniel
Good hand at solder , badhead in electronics