Sansui - SE-9 Equalizer





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Holds dual bachelor's degrees in electronics and physics with 20 years in audio engineering.
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Description from the seller
Sansui SE-9 Stereo Graphic Equalizer — with original microphone
Description:
For sale: an exceptionally clean Sansui SE-9 stereo graphic equalizer from the early 1980s (Japan). This high-end computer-controlled equalizer works perfectly and comes with the original microphone for automatic room and sound analysis — an accessory that is particularly valuable with this model and often missing in used units.
Key features & functions
• Model: Sansui SE‑9
• Type: Compu‑Equalizer (computer-controlled stereo graphic equalizer)
• Frequency range: 10 Hz – 100 kHz
• Bands: 8 per channel (80, 160, 315, 630, 1.25 k, 2.5 k, 5 k, 10 kHz)
• Control range: ± 12 dB
• Signal‑to‑Noise Ratio: ca. 110 dB
• THD (total harmonic distortion): 0.008%
• Gain (flat): 0 dB
• Inclusive:
• Original measurement microphone for automatic equalization (electret condenser type)
Spectrum analyzer function
• Motor-driven sliders and automatic calibration
• Connectivity: RCA (line in/out, tape loops)
• Power: multivolt (100/120/220/240 V; 50/60 Hz) 
Dimensions & Weight
• Dimensions (W × H × D): 430 × 148 × 311 mm
• Weight: approx. 6.6 kg net
The Sansui SE‑9 stands out for its auto-calibration with microphone and spectrum-analyzer tool, allowing it to automatically optimize the frequency response for your listening room — something rare with classic 8-band equalizers. Modern audio installations have only recently gained this kind of feature.
Our products are carefully packed and insured for shipping.
Sansui SE-9 Stereo Graphic Equalizer — with original microphone
Description:
For sale: an exceptionally clean Sansui SE-9 stereo graphic equalizer from the early 1980s (Japan). This high-end computer-controlled equalizer works perfectly and comes with the original microphone for automatic room and sound analysis — an accessory that is particularly valuable with this model and often missing in used units.
Key features & functions
• Model: Sansui SE‑9
• Type: Compu‑Equalizer (computer-controlled stereo graphic equalizer)
• Frequency range: 10 Hz – 100 kHz
• Bands: 8 per channel (80, 160, 315, 630, 1.25 k, 2.5 k, 5 k, 10 kHz)
• Control range: ± 12 dB
• Signal‑to‑Noise Ratio: ca. 110 dB
• THD (total harmonic distortion): 0.008%
• Gain (flat): 0 dB
• Inclusive:
• Original measurement microphone for automatic equalization (electret condenser type)
Spectrum analyzer function
• Motor-driven sliders and automatic calibration
• Connectivity: RCA (line in/out, tape loops)
• Power: multivolt (100/120/220/240 V; 50/60 Hz) 
Dimensions & Weight
• Dimensions (W × H × D): 430 × 148 × 311 mm
• Weight: approx. 6.6 kg net
The Sansui SE‑9 stands out for its auto-calibration with microphone and spectrum-analyzer tool, allowing it to automatically optimize the frequency response for your listening room — something rare with classic 8-band equalizers. Modern audio installations have only recently gained this kind of feature.
Our products are carefully packed and insured for shipping.
