Threshold Audio S-300
Power output: 150 watts per channel into 8Ω (stereo)

Frequency response: 7Hz to 100kHz

Total harmonic distortion: 0.1%

Gain: 26.6 dB

Signal to noise ratio: 100dB

Semiconductors: 14 x transistors per channel (output)

Dimensions: 8.72 x 19 x 13.125 inches

Weight: 56lbs

Year: 1983-1988

*THRESHOLD FET NINE
Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.02%

Gain: 58.5dB (MC), 37.7dB (MM), 20.57dB (line)

Signal to noise ratio: 66dB (MC), 80dB (MM), 112dB (line)

Output: 20V (Pre out Max)

Dimensions: 19 x 9.6 x 1.75 inches