Audio Research SP-12
Very little information on the Audio Research SP-12 has survived. The research file for this archive holds no confirmed factory specifications, no production dates, and no review text that names the model outright.
The most relevant trace is a preamplifier directory page, retrieved in connection with the SP-12. As reported in HiFI-Stereo (1986, p.53), it lists a stereo preamp with line-level input sensitivity of 25 mV, input impedance of 50 kΩ, and a selectable magnetic phono input (10/30/100/10k/47k Ω loading). Dimensions are 19 × 5.25 × 10.25 inches, weight is 49 lbs, and the price is around $3,700. The OCR text is garbled and the model name does not survive on the page. So there is no way to confirm these figures belong to the SP-12 and not a stablemate.
No further details — circuit topology, tube or solid-state design, production years — are documented in the sources available to this archive. If you own an SP-12 or have literature, the Archive would welcome a correction.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.
Related Models
- Audio Research D-1
- Audio Research EC-4
- Audio Research EC-4A
- Audio Research LS-3
- Audio Research PH-1
- McIntosh C104 (1950–1954)
- McIntosh C20
- McIntosh C200 (2000–2006)
- McIntosh C22 (1963–1968)
- McIntosh C35