Opinions on Audio Research SP5


Anyone have any experience with an Audio Reserach SP5 Preamp. I know that it is a solid state design. how does it compare to other ARC preamp units?
eagleman6722
Pretty old now, isn't it? May need to be rebuilt. I had an SP-6 that was modified to remove protection circuitry. It was a tube pre-amp, which I used with a SS amp. Incredible.
The Audio mags of the time were not all that impressed i.e. absolute sound, etc. The ARC tube gear totally outclassed the early ARC solid state.