Conrad Johnson LP66S Power Amplifier
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As with all conrad-johnson tube amplifiers, the LP66S requires 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. Audio circuit and related power supplies feature precision metal film resistors and high-performance polypropylene capacitors. There are no electrolytic capacitors in the audio circuits 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.
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Conservatively rated at 60 watts per channel, the LP66S offers sufficient power for most applications. Users who have not previously experienced the dynamic range and lifelike timbre of tubed components will find the LP66S an ideal introduction to the joys of modern tubed amplifiers. Along with its tonal integrity, its ease of use, low maintenance costs, and reliability will be a revelation for those who have only experienced "entry-level" tube gear. For veteran audiophiles, its modest price and size make it a great choice for bringing conrad-johnson quality to a "second” system. A word of warning if you are in this last group: whether in the den, library, or bedroom, the LP66S’ wide bandwidth and low distortion will give your main system a run for the money.
Specifications
Power: LP66S - 60 watts per channel from 30 Hz to 15 KHz at no more than 1.5 % THD or IMD, both channels driven into 4 ohms (also available connected for 8 or 16 ohm loads)
Sensitivity: 0.5 V 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: 3 x 6922, 4 x 6550
Dimensions: 16D x 19W x 6.38H inches
Weight: 45 Lbs.