xin supermacro opamps question
Nov 13, 2009 at 6:14 PM Post #3 of 7
The SM 3 is an excellent amp. I like the 5534 biased to class A followed by a couple of BUF634's. I prefer that amp to the later ones. I converted one to an amp only so it required a preamp and even though I already have a SM3 I think I will convert it back. I also have with 5002 buffers, that sounds excellent. I always prefered the HA5002 buffer by just a little to the 634.

I also never really used any of the switches on any of the Xin amps but they do come in handy.
 
Nov 14, 2009 at 2:40 AM Post #4 of 7
Quote:

Originally Posted by jamato8 /img/forum/go_quote.gif
The SM 3 is an excellent amp. I like the 5534 biased to class A followed by a couple of BUF634's. I prefer that amp to the later ones. I converted one to an amp only so it required a preamp and even though I already have a SM3 I think I will convert it back. I also have with 5002 buffers, that sounds excellent. I always prefered the HA5002 buffer by just a little to the 634.

I also never really used any of the switches on any of the Xin amps but they do come in handy.


Thanks Jam, as always I may have to pick your brain a bit more on this!
 
Nov 14, 2009 at 3:14 AM Post #5 of 7
One of the popular opamps for the SM3 was the OPA2227, it was quite warm and tubelike. I also very much liked the HA5002 as a buffer and had it in all my SM amps. It has a non-standard pin basing, so is not real easy to adapt to a DIP socket. The 5534 is one of 3 opamps that can be output bypassed.
 
Nov 14, 2009 at 5:20 AM Post #6 of 7
Xin made the B model that took the 5002 but not many were made. I told him I preferred the 5002 and I think I have two models with the 5002.
 
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