Audio Research SP4 Preamplifiers

I got a steal on this pristine condition ARC SP4 while shopping for a sub $500 option as a backup preamp. Not having experienced any ARC products before, I was completely amazed at the build quality, fit and finish considering that this was a product...

I currently also own an Audio Research SP6E tube preamp, and Carver C-4000t preamp

What can I add that others have not said of the fine SP series such as SP-4 and SP-7. The first ARC preamp I heard was in 1973, it was an SP-3 and it made "Goodbye Yellow Brick Road" sound infinitely better than it sounded with my Sansui receiver....

Just a plain wonderful preamp. It takes a little getting used to because it will sound better than most anything you have heard. I like this solid state preamp more than most of Audio Researches Tube preamps. It's hard to explain, it just makes the...

There's not much to say, other than accolades and praise.