FS:
 AMPEREX NEW STOCK, LOW HOURS 7062, PAIR, $30.00 OBO

USE A 7062 TO REPLACE THE 12AU7 IN A MINI TORII. SEE DISCUSSION IN THE MNI TORII FORUM AT THE DECWARE WEBSITE ("TUBE ROLLING")

TESTED IN MY MINI TORII.

In my limited experience, the 12AY7-12AV7 family works best in my setup, a nice balance between the warmth of the 12AU7 and the more open but 'edgy' 12AT7.

Personally, I would not expect the 12AX7 family to bring that middle-of-the-ground combination that pleases me, due to the excessive gain involved (100 Mu). The tougher/darker 6V6 I have is the Russian Black Plate, and its the only one not overcome by the higher gain of the 12AT7's (only 60 Mu, which is as high as I would go to pair with this Russian tough 'oyster').

I guess you may have experienced some edginess and some ringing in the high-pitch passages with the 7025, along with a less warm/smooth sound overall? Too analytical and forward sounding maybe?

I would contend that in order to identify the specific group to later on fine-tune through quality design differences, one needs first to find the right spec configuration in the driver. Chances would  be much higher for success.

Right now I'm curious about the 6072 (44 Mu) and 5965 (47-48 Mu), which go between the 6414 and the 7062.

Keep us posted on your 12AX7 findings,

Thanks

I re-read the design notes Steve has published for the MT; Power of this amp is somewhere between 3 and 6 watts depending on the tubes used and the speakers you connect it to.  (Quote)
Which tubes gives this amp more or less power?

I have a had several dealers tell me with my tube amps to try both the 4 ohm and 8ohm taps and see which sounds better and use that.