I asked what your room size is and what Sim model your are thinking about because I have a pair of Model 1 Signatures that I drove with a Sim I-3se with great success in my bedroom system. The I-3se controlled the Model 1's easily with a full bottom end and rich mids and highs. The imaging was very good. I since have moved the I-3se to my living room driving a pair of Dynaudio Contour 1.4's. Last week I was considering a used Sim I-5 integrated for my Model 1's in my bedroom. I called Totem to get their thoughts on this. I was told that the I-5 should have plenty of power for them. I bought it and it should arrive in a couple of days.
If your room size is not too large a Sim/ Totem Model 1 combination should give you much listening satisfaction.
If your room size is not too large a Sim/ Totem Model 1 combination should give you much listening satisfaction.