Audio Research SP-17
A high-end vacuum tube stereo preamplifier designed for audiophiles and serious analog/digital music systems. It was produced by Audio Research Corporation, a respected American manufacturer of premium tube audio equipment.
Key Features
Tube-Based Design: Uses two 6H30 dual triode tubes, known for low noise and long life, in the main audio paths.
Class-A Operation: Like many Audio Research preamps, it operates in Class-A for linear, high-quality amplification.
Inputs & Outputs: Multiple single-ended RCA inputs (phono, CD, tuner, video, aux) and two main outputs with an additional record/tape output.
Phono Stage: This units include an integrated MM phono stage
Remote & Control: IR remote control, 102-step volume control with LED indicators, and 12-volt trigger for system integration.
Technical Specs
Frequency Response: ~0.6 Hz to 80 kHz line; wider bandwidth beyond both ends.
Distortion: Very low (~0.005%).
Gain: ~11 dB line; ~58 dB phono
Signal-to-Noise: High performance (~104 dB line).
Outputs: 2 V RMS typical preamp output.
Dimensions & Weight: Standard 19″ rack width; ~12.6 lb (5.7 kg).
Power: 120V
Sound & Performance Notes
The SP-17 brings much of the sonic character and refinement of higher-end Audio Research preamplifiers into a more accessible (for high-end audio) price range. Improvements over its predecessor (SP16) include lower noise, finer volume control, lower output impedance, and greater bandwidth — all contributing to clearer, more articulate music reproduction with tight bass and refined detail.
Audio Research SP-17 is typically used as the primary preamp in a high-fidelity stereo system:
Driving power amplifiers
Connecting vinyl turntables (with phono stage model)
Managing multiple sources with high fidelity and low noise
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