Symphonic Line

Yes, I own their RG4 Mk3 mono block power amps for the past 3 years. A CAT SL1 is used as a preamp. I really like this power amp. I've upgraded the diode rectifier bridge to get better power delivery & hopefully better lower level details.
I've a review of this amp on this site (check under my user name) if you want to read more.
A really very nice s.s. power amp - very musical & leans towards the tube side of sound.
Another Audiogon member "Gregm" is also mighty familiar w/ their products. Hope that he chimes in.
They are definitely low-key in the USA. Klaus Bunge of Odyssey Audio in Indianapolis imports the gear from Germany. He's yet another person to talk to.

Had the RG-1 MKII inhouse for a while.I liked the harmonic structure.One of the better class-A biased solidstate amps I've had through here.

had a model rs or rg 1 (as i recall, with a beautiful laquer front) in the late 1980's that i bought from primus audio in kc, mo, and used with a tube pre. very very nice ss amp. neutral, powerful...what good ss should be. drove huge frieds and duntechs like it owned them. only thing that has ever rivaled that amp for those qualities is my current accuphase.

coloured equipmnet
at least 1000 hours for burn-in
many revisions and new models so you loose value
good sound
IMO