Any experiences with FM Acoustics Preamps

The FM 155 is a very good preamplifier but pay attention to the high gain
One of my friends needs to let the -20db filter turned on with a Pass Aleph Amp

I'm considering the single-ended FM-155 to go along with the Symphonic-Line Kraft amp.

Coincidentally, I used an identical combo some years ago: a stereo Kraft with a 155 & later a 266. Both with excellent results, better than the RG3 & the tube one. The FM is hyper detailed and the Kraft is (reportedly) wide-bandwidth, so all is fine. I didn't find it cool -- but then my whole system isn't very cool anyway; it's on the warm side of neutral (i.e. 100Hz is higher than 10kHz). As a matter of fact, I slightly preferred the little 155 (but the reason is probably psychological).
Other pre's that did well with Symphonics are the old Goldmunds, and the CATs.

Thank you gentlemen for the feedback. I appreciate it !!

Hello Gregm:
In another thread, I read you mentioned - "I got a 'Kraft' class A and control it with a transformer volume. So, I still use SL amplfication!"

I would like to ask you that you went from RG3 with full PS, then to FM Acoustics & then to Transformer volume (passive). Why and what were your findings when you went from RG3 to FM and then transformer?

Also, as you used the FM with the Kraft, did you find he Gain of the FM acceptable or too much that you may have had to keep the -20dB attenuator pressed-in all the time?

Sorry for asking so many questions but the pricing of the S-L RG3 with Turbo PS and the FM-155 are practically as par so its very difficult making the choice. Technically, it seems the FM preamps are a notch above their power amps and this interests me to look into their pre for a perfect match with the Kraft.

Arupg:

Why and what were your findings when you went from RG3 to FM and then transformer?

The FM was far better than my RG3 -- which was really good, all things considered. The over-driving wasn't a problem, the FM unit had been already used with a medium sensitivity amp & it sounded fine on mine (~1,2 v I think).
The reason I moved to a transformer is financial: I unfortunately needed to downsize my system and had to let the FM go. I tried a used Goldmund ("7") which was also very good on the Kraft -- but had to let that go too.

As to your conundrum between the RG3 & 155: the latest RG3 is reportedly better than previous versions, but I don;t really know it (my story goes back 3yrs). The point with the THEN rg3 was a slight instability in the high register -- which didn't exist with the FM.
Another advantage for the FM is the unit's size: it's tiny & light compared to the RG3 which is seriously bulky. Also I didn't have any remote for the FM (is there one now?).
Regards