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Monoblock Amplifiers
conrad-johnson LP125MSE
monoblock tube amplifier

Regular Price:$12,500.00 / pair
Your Price:$7,300.00 / pair
You Save:$5,200.00 / pair


 
 
  Warranty and considerations:
Warranty Terms (Parts and Labor) 3 years
Free Shipping to the Continental US? YES!

conrad johnson LP125MSE Monoblock Power Amplifier

Consistent with conrad-johnson's design philosophy that circuits should be kept as simple as possible, these amplifiers work their magic with a minimum of vacuum tubes (six in the mono LP125MSE). A composite triode input stage is direct coupled to a cathode-coupled phase inverter. The output stage is comprised of 6550s operated in ultralinear configuration (two pair for the LP125MSE) for an optimal combination of high power and low distortion. Limited negative feedback is applied to the circuit to reduce distortion and provide a sufficiently high damping factor to control most real-world speaker systems. Discrete dc power supply regulators are provided for the input and inverter stages, in order to isolate each stage from the output signal.

As with all conrad-johnson tube amplifiers, these amplifiers require no complicated adjustments or specialized equipment to maintain. To assure continued peak performance, the owner need only make a simple bias adjustment when new tubes are installed. Built in LED bias indicators allow the user to make this adjustment using only the supplied screwdriver.

Component parts quality is a signature strength of any conrad-johnson product. The audio circuit and related power supplies feature precision metal film resistors and high-performance polypropylene capacitors. There are no electrolytic capacitors in the audio circuit or in the related power supplies. Proprietary wide-bandwidth output transformers contribute to excellent high frequency performance. Even the input/output connectors and internal wiring have been carefully selected for optimal sonic performance. 

The LP125MSE mono-block delivers a solid 125 watts. Along with the tonal integrity and faithfulness to the music that are embodied in these amplifiers, their ease of use, low maintenance costs, and reliability will be a revelation for those who have only experienced "entry-level" tube gear.

The SE version adds a liberal sprinking of Vishay resistors and cj's proprietary Teflon capacitors to make one of the best sounding medium power tube monoblocks we've heard.


Specifications
Power:
LP125M - 125 watts from 30 Hz to 15 KHz at no more than 1.0 % THD when driven into 4 ohms (also available connected for 8 or 16 ohm loads)
Sensitivity:
LP125M - 0.9V to rated power
Frequency Response: (at 10 watts): 20 Hz to 20 kHz, +/- .25 dB
Hum and Noise: 102 dB below rated power
Input Impedance: 100 kOhms
Tube Complement:
LP125M - 1 x M8080, 1 x 6922, 4 x 6550
Dimensions: 16D x 19W x 6.38H inches
Weight:
LP125M - 47 lbs


All conrad-johnson products are carefully hand assembled and each is thoroughly tested to assure conformity to our exacting performance standards. C-j's confidence in these components is reflected in their three year limited warranty covering labor and parts. Service is a top priority at conrad-johnson. In the event that a product does require service, it will be handled promptly and efficiently.


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Spearit Sound
351 Pleasant Street
Northampton, MA 01060
United States
Ph: 413-584-9547
Fax: 413-585-5139
e-mail: jtozzi@spearitsound.com
 

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