| Most of the action today with vintage 6V6 tubes centers around the smaller glass GT package. This is the type most often found in electric guitar amps, and the current desire for the "tube sound" has caused demand for these tubes to skyrocket. Unfortunately, the modern made Russian and Chinese versions of the 6V6 often cannot handle the high plate voltages some of these amps use, and they self destruct in a bright laser light show. Only the USA made vintage 6V6 tubes will do. The metal jacket version of the 6V6, labelled 6V6 with no GT in the suffix, has basically undergone no changes since it's introduction in the late 1940s. It is the SAME tube inside as the GT types, is the same height, and will work perfectly in any circuit calling for a 6V6. You may want to check out the metal 6V6, as they are currently priced less than all the other types, and will still give you that great tube sound. IMPORTANT NOTE: You should ALWAYS check and/or adjust your amp output tube's bias settings when replacing 6V6 or ANY power output tube. |
