2. amps-preamps
  3. 143859-2497

Why do some fine solid state amplifiers like Soulution have such low input impedance?

I was looking at an excellent deal on a 5 series Soulution stereo amplifier to mate with my VAC Renaissance 5 preamplifier.  I then found out that the Soulution has an input impedance of 2000 Ohms balanced. Although my VAC is transformer coupled at the output, I am going to pass on the Soulution. Each component is too good alone to worry about a compromised “marriage”.  Do SS amplifier manufacturers find sonic benefit in such low input impedances, or is it really to discourage use with tube preamplifiers and encourage sales of their own preamplifiers?   
audiobrian

Showing 1 response by gdnrbob

gdnrbob
4,489 posts
 
I can attest to Steve McCormack's use of low output impedance on his amp revisions.
When I got my DNA-1 monoblocks back the impedance was so low I now need to use a Jensen Transformer to covert the XLR signal to RCA in order to use my Vandy crossovers at lower impedance than I can get using balanced. A bit of a bummer. And, I still haven't had time to install everything. Ralph's MA-1's/MP-3 are so good that I have little impetus to change things.
Oh well, something to work on later...
Bob
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