Audio Research SP17 Hybrid Preamplifier; MM/MC Phono

Audio Research SP17 features a pure Class-A hybrid topology pairing low-noise JFET inputs with two 6H30 dual-triode vacuum tubes, an electronically regulated high-voltage power supply, and a precise 103-step electronic volume attenuator. Designed as a versatile control center, it integrates a dedicated high-gain phono stage alongside five single-ended line inputs, a processor pass-through, and dual main outputs. This custom architecture preserves subtle micro-details while delivering wide bandwidth and robust output drive, seamlessly handling both vinyl playback and digital sources.

Critical reception and owner consensus celebrate the preamplifier for its remarkably quiet background, holographic soundstaging, and effortless musical vitality. Reviewers and listeners praise its seamless fusion of solid-state speed with tube liquidity, highlighting articulate bass control alongside an open, natural midrange free of artificial bloom. Audio enthusiasts consistently commend Audio Research for exceptional reliability and engineering pedigree, noting that the long-lasting 6H30 tubes and robust build provide stable, reference-grade performance year after year.

Integrating this preamplifier into a two-channel setup breathes vibrant energy, depth, and emotional intimacy into every recording. By bridging vacuum-tube harmonic richness with pinpoint resolution, it transforms a listening space into an expansive front-row acoustic stage. For any music lover seeking authentic high-end heritage, intuitive operation, and captivating sonic realism in a single chassis, it serves as an enduring centerpiece that unlocks the true potential of the entire audio chain.

Brand	Audio Research
Type	Preamplifiers
Component Color	Silver
Component Features	Onboard Phono Stage Remote Control Capable
MSRP	$3,495.00
SKU #	101173
Serial #	98204109
Cosmetic Rating	8 - Very good condition with minimal visible cosmetic wear including minor blemishes on top and front surfaces. Despite these cosmetic imperfections, this preamplifier sounds amazing, and will make a fine addition to any setup.
Functional Notes	Operational condition of this item is excellent, fully tested and no issues found.
Age	10 years
Owners	1
Service History	None