Preamp with Aleph 5 and Thiels


I have an Pass Aleph 5 amp and Thiel CS1.6 speakers and using an Aduio Research SP9 mk I but with upgraded caps and diodes. This preamp sounded fine in an older system but I was told the impdeence of the Aleph isn't a great match for the SP9 and I find that I would like more warmth, more "tube magic". I know the Thiels don't match well with bright electronics so... do I go for an ALeph P preamp? I am very intrigued by an ARC LS 5 or LS 22. I don't need phono. Any help on what preamp might work in this system?
jonfw

Showing 1 response by chang98

Output impedance of SP9 is 250 ohms which is relatively low ...or at least should have no problem driving A5 with an input impedance of 10K.

Output impedance of LS5 is (400 ohms) which is a little higher vs. SP9 though not enough to make a difference in your case.