Tube Amp Archive

If you are matching preamp tubes, what the devil do you match? In the case of multichannel tube amps that would be the multi channels. I think that I might be learning enough to soon measure the operational values of my https://www.uaudio.com/hardware/4-710d.html at the tube pins, to manage to chan...

WOW! - lot of replies - I have been offline, will catch up on this thread, hopefully tomorrow - appears very interesting,
THANKS!

Do any of you think it is true, or not true, as some tube retailers claim that they listen to and test every single tube and resell bad tubes to others at whole sell and sell the cream to "their" customers? Or is that too controversial of a question?

This is exactly what R.G. is correctly arguing. Yeah OK - point noted. I appreciate you posting a follow up, to repeat the comments, reading them again, I can better appreciate them even more. I have taken enough math to really come to appreciate how it can very accurately represent and model real ...

Well, you can't believe everything you read on the internet. The author of that article failed to notice that the V33's power tubes share a common cathode bias resistor. Well Thanks for that revelation – your info led me to read and learn where its cathode resistor is. I am trying to learn to read ...

Why do you think that? I read it on the web - and did not see a challenge to running with 2 power tubes on the v33 - there was a comment to not pull from the same side, saying that could unbalance the OT and stress it. After playing it for 20 - 30 min I check it for any heat and everything seemed c...

yeah NOT my favorite - but inspiring - YES

I don't know I've heard of anyone claiming the tone of their crate was their favorite amp. Crate Vintage Club was one of my first amps and I have to say it was very good sounding. They have build few very good amps and alot of cheap not-the-best stuff. Yes - Some Crates have pretty respectable tone...

Thank you for that I will keep a lookout for RCA BPs, and add them to my list

always have wanted to mess with amps and build something cool. Dad taught me how to discarch a TV tube way back in the 1960s. He was pretty darn good about teaching us how to do these things without getting kilt

Hey oh - I am not surprised it stinks. I just recently bought it for $150 and expected it to sound bad based on reviews - I bought it for the parts. I have just been messing with it to see what could be done with tubes and it did help and the gain channel sounds good with the bridge pickk up but wit...

After using my very best sounding tubes in various positions in the crate V33 pre-amp. And there is nothing wrong with the new Reflector 6P14P's - therefore HAVE determined that the V33 has NO redeeming value for sound - as the circuits were made from that dying manufacture - it just sounds like POO...

THANK YOU!!!

thank you - just phase or is there some gain there also?

What does the v3 tube do in this schematic? Thanks

v1b is OD channel
v1a, v2 is clean channel
v3 ?

Thanks