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Sovtek 5751 9-Pin Preamp Tube

This product is no longer available.
The Sovtek 5751 is an affordable alternative to the 12AY7 used in original Fender tweed amps and can be subbed for a 12AT7 reverb driver tube.
Note: The 5751 is not a true 12AX7, but is often used in place of a 12AX7. They only have 70% of the gain of a 12AX7, and are often used to quiet down guitar amps that have too much gain.
Note: The 5751 is not a true 12AX7, but is often used in place of a 12AX7. They only have 70% of the gain of a 12AX7, and are often used to quiet down guitar amps that have too much gain.
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I used this tube in a couple different places . My fender 30 , in v1 or 2 , mostly to drop the gain a bit. But as a PI it drives the power tubes a little harder than the stock 12AT7 .
Good tube to have on hand .
Posted by Rob Heard on Jul 31, 2021