Pioneer SG-9800 Graphic Equalizer, Multi-voltage Model 1981 - Silver

The Pioneer SG-9800 is a legendary, highly collectible 12-band stereo graphic equalizer. Manufactured between 1979 and 1981, it is widely considered one of the finest consumer-grade equalizers ever built, prized for its classic "silver-face" vintage aesthetic, glowing LED-tipped sliders, and precise acoustic control. 

Technical Specifications

• Frequency Bands: 12 bands per channel, divided evenly by octaves. The specific center frequencies are: 16Hz, 32Hz, 64Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, 8kHz, 16kHz, and 32kHz.
• Control Range: Continuous adjustment from -10dB to +10dB per band.
• Frequency Response: Ultra-wide 5Hz to 100kHz.
• Signal-to-Noise Ratio: 92dB.
• Total Harmonic Distortion (THD): Exceptionally low at 0.02% (or lower depending on the testing standard).
• Dimensions & Weight: 420 x 150 x 355 mm; weighing 7.1 kg. 

Core Features & Usability

• Dual-Channel Independence: The unit features two identical sets of 12 sliders, giving you completely independent control over the left and right audio channels. 
• LED Control Illumination: Each individual slider contains a built-in red LED pointer (though custom mods sometimes swap them for blue). This creates a stunning visual display in a dark room.
• Tape Monitoring & Recording: Equipped with dedicated tape attenuation options (-3dB and -6dB) and direct monitoring switches. This allows users to equalize audio signals dynamically while recording onto cassette tape, vinyl, or digital mediums. 
• System Integration: It easily integrates into vintage hi-fi stacks via RCA connections, typically running through an amplifier's tape monitor loop or positioned between a preamplifier and power amplifier.