Audio Research SP-4

Brand: Audio research

The Audio Research SP-4 is a high-end stereo phono preamplifier designed for vinyl enthusiasts. It features custom-matched transformers, high-quality audio components, and accurate RIAA equalization to ensure that every detail of your vinyl collection is preserved and delivered to your speakers or headphones. The SP-4 also offers adjustable loading, gain, and subsonic filtering, as well as balanced and unbalanced outputs for added versatility. Overall, the SP-4 is a top-tier phono preamp that is known for its exceptional sound quality and craftsmanship.

• 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)