Myles - I'm a refuge from the HC amp forum and figured I'd check out your new digs. I have two tube related questions for you.
Background. I have a Rivera K100 head. As backups to the stock preamp tubes which were:
V1 Sovtek 12AX7WB
V2 Sovtek 12ax7wb
v3 Sovtek 12ax7LP
v4 Sovtek 12ax7wb
v5 Sovtek 12ax7lp
I purchased 5 JJ ECC83S.
Because the Sovtek WBs have a pretty crappy reputation, I figured I'd try the JJs in all slots. There was no major improvement to be heard. I love the sound of the amp but I wonder if I'm using it to its full potential.
Question #1. Without putting in expensive NOS preamp tubes, do you have any reccomendations for my amp using the tubes I already have or maybe some other manufacturers such as EH?
Question #2. The stock power tubes are Svetlana EL34's and Rivera has a stamped #7 on the tubes. I was going to purchase some JJ's as backups. Can I purchase tubes from other manufacturers (since I know the rating that rivera uses)that are rated similarly and not have to worry about adjusting the bias on the amp?
Feel free to ask Myles
in Guitar Forum
Posted
Myles - I'm a refuge from the HC amp forum and figured I'd check out your new digs. I have two tube related questions for you.
Background. I have a Rivera K100 head. As backups to the stock preamp tubes which were:
V1 Sovtek 12AX7WB
V2 Sovtek 12ax7wb
v3 Sovtek 12ax7LP
v4 Sovtek 12ax7wb
v5 Sovtek 12ax7lp
I purchased 5 JJ ECC83S.
Because the Sovtek WBs have a pretty crappy reputation, I figured I'd try the JJs in all slots. There was no major improvement to be heard. I love the sound of the amp but I wonder if I'm using it to its full potential.
Question #1. Without putting in expensive NOS preamp tubes, do you have any reccomendations for my amp using the tubes I already have or maybe some other manufacturers such as EH?
Question #2. The stock power tubes are Svetlana EL34's and Rivera has a stamped #7 on the tubes. I was going to purchase some JJ's as backups. Can I purchase tubes from other manufacturers (since I know the rating that rivera uses)that are rated similarly and not have to worry about adjusting the bias on the amp?
Thanks in advance for your advice.