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The Conrad-Johnson Premier 140 is a high-end, 140-watt-per-channel stereo vacuum tube power amplifier introduced by high-fidelity audio manufacturer Conrad-Johnson. [1, 2]Key Specifications & DesignPower Output: 140 watts RMS per channel into 4, 8, or 16 ohms (default configuration is 4 ohms). It can also be configured by the factory into a monaural block delivering 280 watts. [1, 2]Tube Complement: Uses a Sovtek 6922 dual-triode for input signals, a pair of 6N30 (or 6H30) cathode-coupled phase inverters, and four Svetlana 6550C push-pull output tubes per channel. [1]Power Supply: Features separate, low-impedance discrete DC power supply regulators for the input and phase-inverter stages, using custom polypropylene reservoir capacitors with no electrolytic capacitors in the power supply. [1]Dimensions & Weight: Measures 19W x 8H x 19D inches and weighs approximately 85 lbs. [1]Sound and ReceptionAccording to users on forums like MartinLogan Owners and Conrad Johnson Owners, the Premier 140 is widely praised for delivering a smooth, open, and dimensional soundstage with a warm, detailed midrange and effortless capability in driving complex or reactive speaker loads. This was recently retubed with matching Tung-Sol 6550s. Comes with manual and will be shipped in original packaging. Be sure to check my others auctions for another Premier 140 as well as period correct matching tube pre amp. Shipping is $300. Also can be demonstrated and picked up in Dennis Port MA
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Conrad-Johnson emerged in the mid-1970s from the dissatisfaction of two American economists and audiophiles, Dr. William Conrad and Dr. Lewis Johnson, with the inconsistent performance of contemporary amplifiers. Founded in the United States, the company launched its inaugural product, the all-vacuum-tube PV-1 preamplifier, in 1977, quickly earning critical acclaim and establishing a benchmark for musicality. This debut propelled Conrad-Johnson into the forefront of the tube renaissance, with the iconic MV75 power amplifier following in 1978, solidifying its heritage as a pioneer in high-end audio craftsmanship.
The brand specializes in vacuum-tube preamplifiers and power amplifiers, renowned for their warm, engaging sound that prioritizes musical satisfaction over sterile measurements. While tube designs remain its cornerstone, Conrad-Johnson expanded into solid-state amplifiers and phonostages in the 1980s, alongside limited ventures like the Sonographe turntable line and electronics acquired in the late 1980s. All components are hand-built in the USA using simple circuits and premium custom parts, reflecting over four decades of refined design philosophy.
Conrad-Johnson holds an exalted position in the high-end market as an American classic, beloved by audiophiles for gear that "just sounds right." Its products command lust among enthusiasts worldwide, blending vintage appeal with sustained relevance, and consistently rank among the most musically rewarding options available.
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