Review – Preferred Series 7025 / 12AX7 Tube
The Preferred Series 7025 is a great sounding 12AX7 tube type that reminds me a little more of the ECC83 that EI made in the old days. That’s a pretty nice compliment. I compared this…
Review – JJ ECC83-MG / 12AX7
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…
Review – JJ ECC83-S / 12AX7
The JJ ECC83-S / 12AX7 tube sports a different plate design than found in most 12AX7’s. When you look at them you can’t help but think that they must be rugged and good for the…
Review – Sovtek 5751
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…
Review – JAN-GE 5751
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…
Review – Sovtek 12AX7-LPS
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…
Review – Sovtek 12AX7-WA, 12AX7-WB
I’ve grouped the Sovtek 12AX7-WA and Sovtek 12AX7-WB together because they have essentially the same sound. The only noticeable difference between the two was a bit more gain from the WB model. These tubes are…
Review – Electro-Harmonix 12AX7
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…
Review – Tung-Sol 12AX7
There are only so many ways to describe tube tone and most have become cliches. The Tung-Sol 12AX7 has the gain and drive of a Chinese 12AX7 and the pure tone of a Mullard or…
Triode Roundup: Seven “Common Man” 300B Tubes Compared
A re-post from Wall of Sound, Comparison Review by Noam Bronstein I seem to chronically underestimate a lot of things. Notably to WoS readers, when I say something will be posted “by the end of…
