Heathkit SP-2A
High Fidelity Stereo Preamplifier (1959)

Specifications
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.15%
Input sensitivity: 15mV (mic), 2mV (MM), 250mV (line)
Signal to noise ratio: 65dB (mic), 65dB (MM), 75dB (line)
Output: 500mV (line), 2.5V (Pre out)
Valve complement: 2 x EF86, 2 x 12AU7, 2 x 12AX7
Dimensions: 15-5/16 x 4-5/8 x 8-1/2 inches
Weight: 11lbs
Year: 1959
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