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The LS7 is a Tube Line Stage preamplifier made by Audio Research in the mid 90’s. It uses four 6922/E88CC dual-triode tubes with a regulated solid-state power supply. It was traditionally paired with the VT60 tube stereo amplifier which was introduced with the LS7.
OVERVIEW
Very Good condition Pre-Owned Audio Research LS7 Black
Will be professionally packed for shipping
Rated 7/10 for cosmetic wear consistent with age and use Tubes have been replaced
SPECIFICATIONS
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Tube Complement: 4 × 6922 / E88CC dual triodes
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Inputs: 5 × line-level — Tape, Tuner, CD, Video, Aux
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Main Outputs: 1 × stereo RCA
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Tape Output: 1 × stereo RCA, fixed level
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Input Impedance: 100 kΩ
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Output Impedance: 200 Ω
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Gain: 13 dB main output
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Frequency Response: ±0.5 dB, 1 Hz–100 kHz
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Power Supply: Solid-state, electronically regulated
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Controls: Gain, input selector, power, mute
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Dimensions: 19" W × 5.25" H × 10.25" D
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Weight: 9.8 lb (4.5 kg)
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Introduced: 1994
ADDITIONAL INFORMATION
Please call 734.662.3595 and ask for Richard if you have any questions about this product.
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Audio Research Corporation, founded in 1970 in Minneapolis, Minnesota, by William Z. Johnson, traces its roots to his pioneering work in custom audio electronics during the 1950s and his operation of a specialty retail store through the mid-1960s. After a brief stint selling his designs to a larger firm, Johnson regained independence to establish ARC with a singular mission: advancing the state-of-the-art in music reproduction. From modest beginnings in the back of his shop, the company evolved into one of America's oldest continuously operating high-end audio manufacturers, now housed in a state-of-the-art 48,000-square-foot facility in Maple Grove, Minnesota.
ARC specializes in performance-driven electronics, renowned for vacuum-tube amplifiers, preamplifiers, and electronic crossovers that emphasize sonic purity over flashy features or aesthetics. Drawing on circuit designs rooted in the 1950s, the brand integrates tubes into modern contexts, delivering what it calls "high definition" sound through genuine technological advances. While not venturing into speakers, turntables, DACs, headphones, or cables, ARC's focused lineup prioritizes amplifiers and preamps that set benchmarks for musical realism.
Positioned at the pinnacle of high-end audio, Audio Research is hailed as a true originator of the genre, commanding respect among audiophiles for its unwavering commitment to excellence and innovation. Enduring the 1970s tube revival against solid-state dominance, ARC thrives via elite specialist retailers worldwide, standing alongside peers like Conrad-Johnson as a vintage-inspired yet forward-thinking force in the niche boutique market.
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