The Ultimate CAT
Convergent Audio Technologies' SL-1, in its various iterations, has been my reference preamp for some time. When the SL-1 Ultimate came out, I kidded designer Ken Stevens about the fact this designation implied that there was simply no way to improve it, so what was he going to do when—inevitably, in my view—he found ways to tweak the design? Well, sure enough, the SL-1 Ultimate is now the SL-1 Ultimate Mk.II, and Ken has a new preamp called the Legend, which is said to be even better. Improvements over the Ultimate Mk.II include a Teflon circuit board, Black Gate electrolytic capacitors, separate left and right volume controls, and a constrained-layer aluminum/steel bottom plate. An interesting feature is that the AV bypass works even without the preamp being turned on, saving tube life. The price is $15,995, which makes the $7995 for the Ultimate Mk.II seem like a positive bargain.