Audio Research SP9 Stereo Preamplifier

Audio Research SP9 Stereo Preamplifier

Tested & fully functional

20+ solders redone

Tested ECC88 lamps
V1 - T1: 82, T2: 90
V2 - T1: 70, T2: 80

Tested Caps : they’re still good

Cleaned

 Specs:

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