2. amps-preamps
  3. 1210351569

Amp upgrade question

I have a passive bi-amp w/ two CJ SS amps. I can pull this off because they have the same gain, sensitivity and input impedance. The amps are an MF-2500 upgraded to a 2500A running LF and an MF-2100 running HF. 250 WPC on the LF 100 WPC on the HF. I'd like to get better performance on the HF. It's not that I need it louder so much as wanting it better. It's not bad now by the way.The question is should I throw $500 at an upgrade by a great shop (new Cardas Rhodium RCA's,speaker binding posts, silver wire, faster/better PS diodes) or just buy an MF-2250 which show up here for 900-1200 usually. It is a more recent amp with better quality and 120 WPC which would also be the exact match needed for my passive bi-amp in terms of input imp., sens, gain. I would love to have tubes for my HF amp but feel I would need a power amp w/a gain control as finding those same needed input specs would be tough. I use a passive line stage. Thanks in advance for any suggestions.

ET
electroid

Showing 2 responses by electroid

electroid OP
283 posts
 
I used to run the 2500 full range, then added bi-wire(big help) and then finally adding the 2100 which really improved coherence and added dimension to the soundstage. An overall improvement for sure. HF was about identical in tone quality, no downgrade to my ears. I use a few different sets of speakers: Maggies and a Polk SDA SRS series. Sold my Quads. Loved em but too big a room and I'm a bit of a loud freak and listen to bass heavy stuff often. Things are not bad at all now. I just wonder if they could be better. The 2100 is an older design. Originally it had a hard wired 18 gauge power cord. I put an IEC on it and a good cord, that helped for sure. Also I use a passive linestage so longer interconnects is a no no. I really would love tubes if I could afford a power amp w/ a gain control that had 100WPC.

ET
electroid OP
283 posts
 
Thanks Aball-I've got a CJ PV-1 w/2AR upgrade and other tweaks along with the 2100 which I will try to sell. I can always go back to just the 2500A till I get the bucks and find the "right" amp for the top. Too bad I sold my Eico HF-60's about 5 years ago.

ET
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