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Audio Research SP-9 Preamplifier – Old School | TONEAudio ...
https://www.tonepublications.com/old-school/audio-research-sp-9-preamplifier/
The Audio Research SP-9 redefined the term “bullet-proof.” While previous all-tube models often encountered noise, channel imbalance, hiss and distortion, this new hybrid design was dead quiet, linear, and most of all, musical. The SP-9 hit retailer’s shelves in 1987 with an MSRP of $1,695 and offered tremendous value.
Audio Research SP9 preamplifier | Stereophile.com
https://www.stereophile.com/tubepreamps/739/index.html
Audio Research SP9 preamplifier. J. Gordon Holt, Various | Nov 29, 1995 | First Published: Nov 29, 1987. Following the introduction of their very expensive, tube/FET hybrid SP11 preamplifier, there were rumors that Audio Research was working on a hybrid tube/transistor preamplifier targeted to cost less than $2000.
Audio Research SP-9 Audio Research
https://www.audio-high-store.com/audio-research-sp-9/
Audio Research SP-9. Specifications. Frequency response: 1Hz to 200kHz. Total harmonic distortion: 0.01%. Output: 2V (Pre out) Valve complement: 2 x 6DJ8/ECC88. Dimensions: 480 x 134 x 260mm. Weight: 5.9kg
Audio Research SP9 Tube / Solid State Hybrid Preamp with ...
https://skyfiaudio.com/products/audio-research-sp9-tube-hybrid-preamp-with-phono-input
The SP-9 also comes with an adjustable gain setting. This example is factory configured for high gain. A reduced gain option is available to offer more usable range in the volume control for efficient systems. Details and Specifications: ... Audio Research SP9 Owner's Manual.
Audio Research SP9 Review - VintageSonics
https://vintagesonics.com/reviews/amplifiers/audio-research-sp9-review/
The Audio Research SP9 was a complicated, no-expense-spared design that had been ‘shrunk in the wash’ to make it more inexpensive. When it was first released, it was still quite pricey, but you didn’t have to be Richard Gere to afford one. Here was a taste of one of the finest aspects of hi-fi living, brought within audiophiles’ reach.
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