Thanks for your advice, guys. Can I
ask a few more questions?
I'm using Sovtek 12AX7 WXT+ or EH or some marked CZ.
If I mix types, I always keep the same types together
in the phono section (3 tubes) or line section (3 tubes).
The original manual calls for ECC88 tubes, but these
really are equivalent to the 12AX7, aren't they?
Or would they maybe have less gain, like the 5751?
Am I happy with the SP6 sound overall? Hmmmm....I think another reason I was considering a tube swap was the tube
rush. I used to listen to tubes back in the 60's and 70's and forgot how "noisy" it can be. OK, it's minimal, but
noticeable compared to my passive pre setup.
The tube rush does NOT appear in the SP6 line out.
Perhaps the SP6 line stage has
some other problems with it that can't be corrected with a
tube swap?
For now, I'm using a passive pre for
the CDs and taking the line out (after the phono EQ)
from the SP6 for the phono and running it into the
passive pre, too. All that into an ARC Classic 30
(no tube rush there, to speak of) and into a
pair of Quad ESLs (original 57s).
ask a few more questions?
I'm using Sovtek 12AX7 WXT+ or EH or some marked CZ.
If I mix types, I always keep the same types together
in the phono section (3 tubes) or line section (3 tubes).
The original manual calls for ECC88 tubes, but these
really are equivalent to the 12AX7, aren't they?
Or would they maybe have less gain, like the 5751?
Am I happy with the SP6 sound overall? Hmmmm....I think another reason I was considering a tube swap was the tube
rush. I used to listen to tubes back in the 60's and 70's and forgot how "noisy" it can be. OK, it's minimal, but
noticeable compared to my passive pre setup.
The tube rush does NOT appear in the SP6 line out.
Perhaps the SP6 line stage has
some other problems with it that can't be corrected with a
tube swap?
For now, I'm using a passive pre for
the CDs and taking the line out (after the phono EQ)
from the SP6 for the phono and running it into the
passive pre, too. All that into an ARC Classic 30
(no tube rush there, to speak of) and into a
pair of Quad ESLs (original 57s).