Audio Research SP-4 specifications

Brand: Audio research

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• Preamp Output: 2V (10V max)
• Frequency Response: 5Hz to 100kHz
• Distortion: 0.005%
• Gain: 36dB (mm), 24dB (line)
• Input Sensitivity:
• Signal to Noise Ratio: 84dB (mm), 95dB (line)
• Line Output:
• Dimensions: 480 x 210 x 89 mm
• Weight: 5.5 kg
• Year: 1976
• Price: USD $895 (1976)