Conrad JohnsonMF2250AConrad Johnson MF2250A 130Wx2 StereoThe MF2250 has probabally the best midranges I've heard from a solid state amp under $10K. Bass is tight, fast, and articulate. Treble is accurate, natural, and non-fatiguing. This is an "A" ve...950.00

Conrad Johnson MF2250A 130Wx2 Stereo [Expired]


no longer for sale

The MF2250 has probabally the best midranges I've heard from a solid state amp under $10K. Bass is tight, fast, and articulate. Treble is accurate, natural, and non-fatiguing. This is an "A" version (upgraded power supply) direct from the factory at the time of original manufacture. Conrad Johnson certainly didn't skimp on parts quality for this, the smallest in the MF Series. Nichicon power supply cap.s, Vishay voltage regulation, feedback, and control resistors, many of CJ's proprietary audio grade caps, Sanken resin encapsulated transistors, Cardas RCA input and binding post connectors. To summarise the design topology, this is a low feedback (4X) JFET input, Bi-Polar output class A/B push pull solid state stereo amplifier. The only thing worth mentioning (?) about the amp's condition are some wear on the binding post nuts and slight scuff marks on a few of the plastic DC rail fuse holders. In living with the CJ for several years, I made some effective improvements that have increased the amp's performance. All 6 fuses were replaced with audio grade: the Mains fuse is a Rhodium plated Furutech, the 4 DC rails got Acme Audio Lab cryo'ed fuses, as did the 32mm fuse on the main PCB. I put a small square of ERS paper above the power transformer, and Herbie's Grungebuster washers on the tranny's mounting bolts. As you can see from the picture, I replaced the stock feet with brass cones (screwed into the factory holes), and it sits on a 1 1/2" thick Maple plinth with Mapleshade Isoblocks in 4 corners. These are all effective "tweaks" that I believe should accompany the CJ to it's new home. At well over $200 retail, I can't simply give them away. I'll handle that as follows: any offer of my asking price will include all the aforementioned. If I elect to accept an offer of less, the amp will ship with stock feet, fuses, and no plinth or Isoblocks. Sorry if this is confusing, I do not mean to imply that I will sell the amp for $750, or sell the tweaks separately. Pay Pal add 3%
Seller Information

diminish 

Last 12 months
All-time84100.0%

Member since May 2010

Items from this seller