Conrad Johnson MF200 + $500 mod by CJ Tech Director

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James Romeyn

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  • James Romeyn Music and Audio, LLC
    • James Romeyn Music and Audio, LLC
Conrad Johnson MF200 + $500 mod by CJ Tech Director
« on: 23 Dec 2007, 06:10 am »





20 photos:
http://s246.photobucket.com/albums/gg105/ro7939/Conrad%20Johnson%20MF200%20amp/ 


Conrad Johnson MF200 200Wpc + $500 mod by CJ Tech Director

A reliable cool-running smooth-sounding high-current all-analog 56-lb amp for $999

Twenty-year CJ Technical Director Bill Thallman performed $500 upgrade/renovation (3/8/07 invoice in photo): 

1.   Premium high-voltage regulators
2.   Cardas Rhodium RCA input jacks (photo)
3.   Damping sheets under chassis & inside top (photo)
4.   Van den Hul pure silver & silver-plated wire (photo)
5.   Cardas Rhodium 5-way speaker binding posts (photo)
6.   Hyperfast soft-recovery diodes replace standard rectifier
7.   Premium input coupling caps; required circuit modifications
8.   Audiophile AC power cord, Signal Cable, 41” amp to plug tip (photo)

200/350WRMS 8/4-Ohms; two pair outputs per channel; rich detailed upper mid-treble & great stage/image performance.  In direct comparison far preferred over $2800 Pathos Acoustics Classic One hybrid/MOSFET (Stereophile Magazine Class-A Recommended Component); also beat a $1000 ATI #1802 200W bipolar amp.  This amp has excellent power, staging, imaging, refinement, resolution & transparency; the better qualities of tubes w/ none of the cost, heat & service hassles. 

Rock solid reliability; never hiccupped or made inappropriate noise or vibration (mechanical or through the speakers); no blown fuses, no service required, top never removed except for photos.  Dead silent power up/down.  Heatsinks barely warm at highest playback levels.     

Owner’s manual online at Conrad Johnson website; brand new unused OEM shipping carton from CJ; inputs/outputs/fuses/fuse sockets/AC plug all treated w/ Caig Pro Gold; all fuses confirmed correct value.  Faceplate is 3/8"-thick beveled-edge; extra faceplate available 1/4"-thick brushed aluminum. 

Specs for Shipping/Insurance
Insured value: $1000
Gross shipping weight: 67 lbs
Carton dimensions: 14 x 21 x 23”
Seller can deliver to FedEx Center, Providence UT 84332

Jim R. 435 754 5097 O.K. to call anytime; seller is retired fire department captain; 100% positive feedback at Audiogon (Spkrplus) & Ebay (RibbonSpeakers).
 


« Last Edit: 23 Dec 2007, 11:05 pm by RibbonSpeakers.net »