I still have the F3, single ended single stage, and still one of my favorites. Also have the F5, donāt sell it short with horns, not at all.
Didnāt think it was all that until I sat down and really had a listen. Extremely clean, detailed, more robust bass than F3, a really really fine solid state amp. Had it for sale here for a while, glad everyone was too cheap to buy it which gave me time for a good evaluation. Probably the best amp thatās come for sale here in a long time - happy itās still in play.
Had the M2, sold quickly, nothing special. Had the J2, very F5āish as I recall.