Tube Reviews

Our tube reviews are written by third parties who are not employees of or any of the manufacturers that are reviewed. These reviews are a vital resource for learning about manipulating your amplifier’s tone through better tube choices.

JJ ECC83-MG Review

Review – JJ ECC83-MG / 12AX7

4:45 pm
The JJ ECC83-MG is a fine sounding tube. I was unable to notice a loudness reduction compared to the standard JJ ECC83S tube. The tonal characteristics were easier to hear. Compared to the JJ ECC83-S…
Sovtek 5751 Review

Review – Sovtek 5751

4:40 pm
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. In this application, you will get good gain with…
JAN-GE 5751 Review

Review – JAN-GE 5751

4:38 pm
While the JAN-GE 5751 is not really a 12AX7, it shares the same pin-out arrangement and is designed for less gain in favor of lower noise and microphonics. It worked well in both test amps…
Sovtek 12AX7-LPS Review

Review – Sovtek 12AX7-LPS

4:32 pm
The Sovtek 12AX7-LPS an entirely new design from Sovtek and a great step up in sound quality. They have very large ribbed plates and great sound reproduction. I found them very smooth and well balanced in…
Electro-Harmonix 12AX7 Review

Review – Electro-Harmonix 12AX7

4:27 pm
These Electro-Harmonix 12AX7 are not relabelled Sovtek 12AX7-LPS tubes. There is a marked difference in construction and performance. The 12AX7 EH has a nice balanced sound, fairly low noise floor and excellent performance in terms…