Audio Research SP-10 preamplifier Specifications
Description: Tube preamplifer with separate power supply. Individual input for two phono sources, auxiliary inputs for tuner, aux, 2 tape loops. Full switching amongst left, right, stereo reverse, and mono. Mute switch. Switch to remove 12dB of gain. Switch to connect phono directly to volume control, bypassing all extraneous circuitry and switching.
Serial numbers: 92426032 and 92427030, 6312700S and 63126004 (both power supply and control unit have individual serial numbers).
Price: $3700 (1984); no longer available (2009).
Manufacturer: Audio Research Corporation, 3900 Annapolis Lane North, Plymouth, MN 55447-5447. Tel: (763) 577-9700. Fax: (763) 577-0323. Web: www.audioresearch.com.