Conrad-Johnson LP125M monoblock power amplifier Specifications

Sidebar 1: Specifications

Description: Tubed monoblock power amplifier. Tube complement: one M8080, one 6922, four 6550. Maximum output power: 125W into 4 ohms (21dBW), 30Hz–15kHz, at <1.0 % THD (also available connected for 8 or 16 ohm loads). Sensitivity: 900mV for rated power. Frequency response at 10W: 20Hz–20kHz, ±0.25dB. Hum & noise: 102dB below rated power. Input impedance: 100k ohms.
Dimensions: 19" (487mm) W by 6.38" (164mm) H by 16" (410mm) D. Weight: 47 lbs (21.4kg).
Serial Numbers Of Units Reviewed: 5851017, 5851018, listening; 5851047, measuring.
Price: $9500/pair. Approximate number of dealers: 35.
Manufacturer: Conrad-Johnson Design, Inc., 2733 Merrilee Drive, Fairfax, VA 22031. Tel: (703) 698-8581. Fax: (703) 560-5360. Web

Conrad-Johnson Design, Inc.
2733 Merrilee Drive
Fairfax, VA 22031
(703) 698-8581

tmsorosk's picture

" Fundamenally right " I believe were Robert's words , I guess that means he liked it . To bad it had two problems , the first a ground loop issue that couldn't be solved safely , then tube problem's with both mono's . I guess that will preclude it from any recommended components list , or is the recommendation based entirely on sound quality , with relieability thrown out the window ? I don't feel that a pair of amps in this price range should have these types of problems . If I had had these problems with new equipment I would have been very unhappy regardless of the sound .

superaudiolistener's picture

I have found that using a star grounding system really made my system come alive.

Wonder what that would have done with this amp?

With a star ground you have a dedicated earth ground from your electrical box, you ground everything in your system to that point. Pulls out unwanted fields and shunts them to ground.