Click each question to see its answers.
I don't understand the different ratings on Groove Tubes. Can you help?
Asked by Anonymous on October 24th, 2015.
Groove tubes are rated on a 1-10 system of breakup. 1-3 will have early breakup,4-7 will be in the middle of the range, and 8-10 will offer the most clean headroom.
Matched pairs or a single tube?
Asked by Anonymous on May 23rd, 2018.
These are sold in matched pairs.
What is the rating of this pair (I'm looking for GT-3)
Asked by Anonymous on January 16th, 2021.
We will have a range in stock. If you need tubes rated at 3, you can make a note in the "Customer Comments" section of the checkout screen with that request and we will send them if they are in stock. We will contact you directly if we are not able to meet that request.