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Re: Another update on the Tungsol 12ax7

Yup. All that. I bought them online and paid the extra $5 for the addition creme de la creme. I'm a sucker for that kind of offer. All of the tube people who support this page supply reliable tubes that have been tested. Especially if you pay extra.

The 12ax7s are in my m150s as the phase inverter tubes. I don't know what means exactly, but I know that the Tempest and the m150 have very similar topology.

The m150s have one 12ax7 in each and two 12au7 driver tubes in each. According to the Marks at Rogue, the 12ax7 makes the biggest difference on the tone.


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