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Audio Research SP-3 - VINTAGE ALL TUBE PREAMPLIFIER ...
https://skyfiaudio.com/products/audio-research-sp-3-sp3-vintage-all-tube-preamplifier-complete-collector-grade-restoration-w-amperex-tubes
Audio Research SP-3 - VINTAGE ALL TUBE PREAMPLIFIER - COMPLETE COLLECTOR GRADE RESTORATION w/ Amperex Tubes. $4,599. This is a collector grade restoration of a classic and well regarded preamp from Audio Research. The exact model designation is SP3 and t his is an example of the very first production run for this piece.
Audio Research SP-3 preamplifier | Stereophile.com
https://www.stereophile.com/content/audio-research-sp-3-preamplifier
Audio Research SP-3 preamplifier. J. Gordon Holt | Dec 22, 1998 | First Published: Dec 1, 1971. Preview, from Vol.3 No.3: We thought Audio Research's previous-model SP-2C (footnote 1) was excellent, but this is even better—the closest thing available, in fact, to the ideal straight wire with gain. Our sample had a minor glitch—there was a slight "plop" if you rotated …
Audio Research SP-3 preamplifier – Old School | TONEAudio ...
https://www.tonepublications.com/old-school/audio-research-sp-3-preamplifier/
Audio Research SP-3 preamplifier. Back in the mid 1970s, the idea that a preamplifier could provide “straight wire with gain” was an elusive goal. The idea that such perfection could be achieved from a valve model seemed even more unlikely. Yet when the $595 SP-3 preamplifier arrived on the scene in 1972, many audio reviewers proclaimed that such perfection was well …
Audio Research SP-3 Vintage All Tube Preamplifier ...
https://skyfiaudio.com/products/audio-research-sp-3-vintage-all-tube-preamplifier-complete-collector-grade-restoration
Audio Research SP-3 Vintage All Tube Preamplifier - Complete Collector Grade Restoration. This is a collector grade restoration of a classic and well regarded preamp from Audio Research. The exact model designation is SP3 Series A. An excellent match for any vintage system using speakers that might require a bit of boost from the built-in tone controls.
Audio Research SP-3 preamplifier Specifications ...
https://www.stereophile.com/content/audio-research-sp-3-preamplifier-specifications
Audio Research SP-3 preamplifier Specifications. Sidebar: Specifications. Description: Vacuum-tube stereo preamplifier. Frequency response: 15Hz-30kHz, ±1dB. Distortion (THD): 0.005% at 5V out. Maximum output: 25V at 1kHz. S/N Ratio: 90dB (Aux input, no ref. level given). Dimensions: 15 5/8" W by 5" H x 12½ D.
Tubes for the Audio Research SP 3 Series | Antique ...
https://www.tubesandmore.com/sets-by-amplifier/audio-research/sp-3-series
The Audio Research SP 3 Series amplifier requires the following components: × 8. 12AX7. Type: Please make a selection above. ...
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