Conrad Johnson SS amps

Yes,i like the old mosfet sound better.It is not as transparent on top as 2500 but it has that tubelike magic with solid state power.2500 sounds like SS.As for bass control i now have a very unpleasant rubbery bass,individual notes are not defined (no midbass,remember),all i hear is congested bass ramblings.This is strictly my experience and you may find these amps very pleasant.I will still keep both amps for my second system (there is no way i will make close to what i paid by selling them).I will be very selective when buying speakers for them.I heard them in a store paired with AP Virgo III and the results were really good,just don't match it with a full range/tough load speakers.You will lose.

Unsound:

I think I may be able to help you with the MF 2300. I have been using CJ's prior line of amplifiers for a long time, and I think they are an excellent combination of power and warmth.

I first purchased an MF 2100 for my nominal 6 ohm speakers. I was very impressed with the sound of the amplifier, for it easily powered my moderately inefficient speakers quite well throughout the entire spectrum. The bass was tight and controlled, the midrange was warm yet detailed, and the highs were very detailed but not etched. I credit my CJ preamp for some of this as well, but I tried this amplifier with four other distinctly different preamps, and I always found the amplifier to have similar characteristics. There is no question that the CJ preamp and MF 2100 yielded the best results.

I then bought an MF 2300A. When I connected it to my system (cold) after an extensive listening session with the MF 2100, I was stunned by the improvement. The soundstage was deeper and wider, and the bass response was even deeper and more articulated. Whether at low volume or high, the MF 2300A produced incredible musicality. When it had warmed up for an hour, the sound of the amplifier was even warmer.

I later upgraded my speakers to a pair of ribbon hybrids that fluctuate between 3 and 6 ohms. The MF 2300A was still able to control the deepest bass easily, and the highs were even more impressive and natural (the ribbons really make a difference). I can't say enough about the MF 2300A's performance.

I have no experience with the current CJ solid state amplifiers except for a brief period at a dealer. From everything I have read about the new amps, it sounds like they do not have CJ's typical sonic characteristics (i.e. warmth and tube-like performance).

I hope that this is helpful to you. If you can purchase a used MF 2300 or 2300A in good condition, I think that you will be very happy.

Msilin, thanks for your indulgence.
Overhand and Vortex, thanks for your input.

What is the difference between a MF2300 and MF2300A?
Thanks.

MF 2300A is upgraded version of the amp,better sounding one.