Tubes Asylum

RE: if you need tubes check Guitar Center, Sweetwater, Musicians Friend etc

50.72.89.155

Jonesy

In Reply to: RE: if you need tubes check Guitar Center, Sweetwater, Musicians Friend etc posted by Alpha Al on May 11, 2023 at 05:59:18

Always wondered how Groove Tubes and their various "guitar sound" designations like medium or green worked out in home audio equipment. Did you ever get a chance to try the different kinds?

Jonesy

"I know just enough to get into trouble. But not enough to get out of it."

Follow Ups:

RE: if you need tubes check Guitar Center, Sweetwater, Musicians Friend etc - Alpha Al 17:05:33 05/13/23 (0)
Yes. Originally, they came in a 1-10 scale which was based on current draw. The 10's were the cleanest, and required the most negative grid voltage. The 1's drew more current with a given amount of grid bias. They had less clean headroom before breaking up.

Later, they changed to three ranges, low mid and high.

The higher numbered ones worked better for hi-fi equipment.

I didn't use many of their power tubes. I bought large quantities of Sovtek and matched them myself.

I did like their GT preamp tubes, though. Supposedly they listened to each tube and rejected a good percentage of them because of noise or microphonics. They were guaranteed low noise.
RE: if you need tubes check Guitar Center, Sweetwater, Musicians Friend etc - Story 12:25:32 05/13/23 (0)
It's a bunch of hype mostly and how to get the obsessive sound they desire, I have many from years ago because they've been tested and used to be guaranteed (matched and whatever sound hype). They have a 'grading system' to distinguish the different levels of bias levels for musicians who don't know what they are doing tech-wise.

Something wrong with the amp? Plug in a new set because people are waiting for us to play ...They used to also do 'Special Requirements' like Fender use to do for rugged service. Most working musicians require reliability from their amps for playing out whether it's a local gig or a stadium. They slam their equipment around and don't care. The roadies know better.

It was a way to get plug and play for most non-tech types. They are the SAME TUBES if you can find them.

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