I think it may be a be a left side tube not fully setting in the socket right, try wiggling the tube flush again.
Thanks for the suggestion, but both tubes are fully seated. I even tried switching back to the Tung Sol 7581A's, but the left channel dropped out after only 15 minutes playing this morning.
For those of you using KT-77s... What have you found to be your preference for preamp tubes? I’m currently using the red can 5693s, and I’m giving everything time to break in before I make any changes, but I wanted to get some thoughts from others who have been running that setup.
Hi kray, do you prefer the 717a to the black cans because there is less noise, or some other factor?My fav with KT77 are:
NOS Tung-Sol/Western Electric 717a’s
ken-Rad 6SH7
Another option. Is using an EF86 adapter with EF86 tubes. I bought some Amperex “bugle boys” and they are fantastic with EL34. My fav combo so far.
Hi kray, do you prefer the 717a to the black cans because there is less noise, or some other factor?
I was looking at some Telefunken EF86 the other day. I 'll have to get some adaptors.It’s hard to explain. It’s not night and day but I always seem to go back to the 717a’s vs the other tubes (outside of EF86 Ameprex)
It’s hard to explain. It’s not night and day but I always seem to go back to the 717a’s vs the other tubes (outside of EF86 Ameprex)
Question: Is it necessary to shut down the amp to switch inputs or from speakers to phones?