Tung-Sol 12AX7 / ECC83 

Price of NOS 12AX7s got you down? This new production Tung-Sol 12AX7 made in Russia is the answer! Very low noise and microphonics, but if you’ve got a really high-gain phonostage the new Mullard re-issue might be a better choice. Gorgeous mids, beautiful dynamics, and a nice 3D soundstage. If you’re looking for a smidge more relaxed top end, give the Mullard re-issue a try. Price is for a single tube.

A quick note on this tube: The filaments on these Tung-Sols are almost completely encased in the plate structure. So if you don’t see them glowing as bright as some of your other 12AX7s… don’t sweat it. It’s normal for this tube.

These tubes tested extremely low in noise and microphonics across the board, so we do not have any Driver Grade.

Platinum grade – The best of the best. Lowest noise and microphony with the tightest triode balance we have available. This is typically 10% or tighter, but may be higher depending on available stock.

Gold grade – Low noise and microphonics with a triode balance typically between 15% and 20%, but may be higher depending on available stock.

Driver/Buffer grade – Not available for this tube.

If you have a preamp or phonostage, you need at least Gold grade.

Click here for a more in depth discussion on how we grade tubes.

Price includes matching in any quantity you need at no extra charge.