No. I own(ed) a SFL2 and cannot recommend it. It is really a better dynamic range compressor than a preamp. Very dry dull lifeless sound. There are dozens of preamps that will give you a better sound. It also has a failing volumn control that has a nasty habit of going full volume in one channel and has damaged a speaker's voice coil, so I had to have a woofer rebuilt. SF is also out of business, so I don't know why anyone would bother with legacy equipment. You already have a ML preamp,even being solid state, MLs are outstanding preamps.
Try something from Audio Research, even their lowest price line stage will be better.
Try something from Audio Research, even their lowest price line stage will be better.