2. amps-preamps
  3. 1355436379

ARC Hybrid FET/Tube audio circuit

Hopefully easy questions for you guys to answer, so here it goes.
I was recently told on the hybrid ARC preamps, only the phono section plays through the tube.
Ive also noticed a lot of the ARC preamps in my price range only have 1 Main RCA Output or a combination of RCA jacks and XLR.
So, questions are,
1.On ARC Hybrid do all the inputs play through the tube section or only the phono?
2. Can additional RCA outputs be added for a reasonable cost?
3. Can the combination of RCA and XLR be used concurrently, say the XLR to the main amp and the RCA to powered sub?
Thanks in advance for your input.
ltngstrucktwice
mofimadness's avatar
mofimadness
5,431 posts
 
1. The SP9 and SP14 use the tube(s) for ONLY the phono stage.

2. It would be cheaper to use a RCA "Y" adapter.

3. Yes, that's the way I ran mine.
ltngstrucktwice OP
13 posts
 
Thank you again--this clears things up for my next purchase.
hifigeek1
770 posts
 
The above info is incorrect. The SP9 uses one tube in the phono stage and one tube in the high level stage. The SP14 utilizes one tube in the phono stage. The high level stage is solid state. There are better ARC preamps out there. They had issues with crosstalk that were improved in the MKII and MKIII versions.
bifwynne
2,206 posts
 
Ltngstrucktwice, just an fyi -- Hifigeek (aka Gary) is an authorized ARC service tech. You can rely on whatever he says.
mofimadness's avatar
mofimadness
5,431 posts
 
Sorry, I stand corrected. I was only an ARC dealer for many years. Apparently, I am wrong. I always thought that the SP9 used both tubes in the phono stage...
More to discover