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.

Svetlana EL34 Review

Review – Svetlana EL34

4:50 pm
The Svetlana EL34 is the perfect tube for classic rock. The midrange is very pronounced and the high end is smooth. The bottom end response is not the best, but in a guitar amp it…
Shuguang EL34B Review

Review – Shuguang EL34-B

4:46 pm
For many years no one would have believed that Chinese tube factories could turn out work of this quality. The construction of this Shuguang EL34-B tube is first class, with a well-supported plate structure that…
JJ KT77 Review

Review – JJ KT77

4:43 pm
The KT77 has been gone for many years and original NOS pieces are rare and expensive. JJ electronics has revived the design and released their own version, JJ KT77. To my ears it sounds a…
JJ EL34-II Review

Review – JJ EL34-II

4:37 pm
JJ has upped their game with the new JJ EL34-II, and the design change is truly big enough to warrant the use of the new name. Many companies put an existing tube into a new…
JJ E34L Tube Review EL34

Review – JJ E34L / EL34

4:35 pm
Are you a fan of rock and roll music? If you answered yes and use EL34 tubes then this could be, your go-to bargain. JJ makes great tubes at affordable prices and the JJ E34L…
JJ 6CA7 Review

Review – JJ 6CA7

4:34 pm
Prior to this JJ 6CA7 tube being introduced the choice in a 6CA7 tube was NOS or the Electro Harmonics 6CA7EH. JJ has provided another choice and another price point. JJ tubes tend to be…
Gold Lion KT77 Review

Review – Gold Lion KT77

4:30 pm
Gold Lion KT77 – This tube was a treat to listen to. Since many of us have never actually listened to a KT77 from the original producer, I can not say that they nailed the…

Review – TAD 6L6WGC-STR Tube

4:52 pm
A completely different animal than the TAD 6L6GC-STR. That’s not a bad thing and shows that the company is really working on developing unique products. A completely different plate structure than their other 6L6. These…
Svetlana 12AX7 Review

Review – Svetlana 12AX7

4:14 pm
For several years the original Svetlana 12AX7 tube from St. Petersburg (Winged “C”/SED) tried to develop a good 12AX7 and mostly failed. The current production Svetlana 12AX7 is a New Sensor product and is a…