6550c, did you buy your SFL2 new or used? Did you roll any tubes?
I had a SFL1, SFL2, Line 3SE+ and Power 3SE+ and NEVER had an issue. The pre(s) were used with many amps but mainly Krells (KSA100a, FPB300 and FBP600) and the Pwr 3, and they sound fantastic with no impedance problems.
Compare to the competition in the same vintage, I much prefer SF. I found ARC very bright, CJ too slow ... forget SS. I do agree in stock form, the sound is a little thin, lean, mechanical and dry. The SE+ addressed those issues and with the proper tubes, it's competitive with current competitions.
Chris Johnson founded PCX after selling SF and can service any SF gear at a very reasonable price.
I had a SFL1, SFL2, Line 3SE+ and Power 3SE+ and NEVER had an issue. The pre(s) were used with many amps but mainly Krells (KSA100a, FPB300 and FBP600) and the Pwr 3, and they sound fantastic with no impedance problems.
Compare to the competition in the same vintage, I much prefer SF. I found ARC very bright, CJ too slow ... forget SS. I do agree in stock form, the sound is a little thin, lean, mechanical and dry. The SE+ addressed those issues and with the proper tubes, it's competitive with current competitions.
Chris Johnson founded PCX after selling SF and can service any SF gear at a very reasonable price.