"Groove 6L6B tube fits the bill for my old Silvertone amp. Replaced my RCA blacks with them!"
This reviewer purchased this item from Same Day Music.
This set of tubes are performing well and a 1965, 1484 Twin Twelve Silvertone amp. Recently refurbished electronically, with all new caps, resistors and biased checked. The speakers are C12Q Jensen and are vintage. I replaced the NOS RCA Blackplates with the 5 Rated tubes from Groove. I hoped to get close to the RCA tubes but it is not possible. I am rating the Grooves against the RCA 6l6 Black Plates. The GT B 6L6's are good value. I will save the RCA tubes for recording sessions. The RCA tube NOS are THE BENCH MARK for old R&R tone. I recommend the GT, ALWAYS !!! let your amp. tech. install and bias for best tone & performance.
The rating system will allow you to chance to the same tubes as before once you bias them, however; one should always have the new sets installed and biased by an amp tech for optimum performance.
GT Tests and guarantees tubes for tone, noise, shorts, gas and matched conductance / plate current and must pass the muster for vibration.
For new tubes, I have found many amp techs prefer the GT due to the low failure rates. The tech can't be guessing which NOS tubes will work well and not fail.
Call up GT and you will all the help you need!
Best prices around for the quality.
The Wow Factor:
Tubes are well branded, and look quality. They are matched and tested values on the tubes. No guess work.
1 Year ... tubes wear out over time and I play a lot.
I understand the Groove company has there own tooling for the NEW BLACKPLATE design 6L6 this will help all TONE FREAKS to get there FIX at a reasonable and repeatable price.