Yamaha EQ-550 Natural Sound Graphic Equalizer
Yamaha EQ-550 Natural Sound Graphic Equalizer
Yamaha EQ-550 Graphic Equalizer — Fully Serviced, Cleaned & Tested | Black Panel Era
Add precision tone-shaping and that unmistakable Yamaha spectrum analyzer glow to your system with this fully serviced EQ-550 graphic equalizer — a black-panel-era classic built for the golden age of Japanese hi-fi.
Service & Condition
This unit has gone through Black Panel Audio's full functionality and cosmetic protocol before listing:
• Full exterior and internal chassis cleaning
• Caustic glue residue removed and inspected
• Pots, faders and switches cleaned, lubricated, and treated with DeoxIT
• Slide faders exercised and verified smooth end-to-end
• Spectrum analyzer display tested across all bands
• All inputs/outputs and tape monitor loops verified functional
• Bench-tested for signal integrity and channel balance
Why Black Panel Audio
We specialize exclusively in curated 1980s–90s black-panel Yamaha gear — no mixed-era junk drawer, just era-correct pieces that were built to last and deserve a second life. Every unit we sell is inspected, tested, and cleaned by hand, and backed by our 30-Day Warranty so you can buy with confidence.
What's Included
• Yamaha EQ-550 Graphic Equalizer
• Power cable
• 30-day warranty from Black Panel Audio
Notes
Cosmetic wear consistent with age — see photos for exact condition. Reach out with any questions before bidding/buying. Follow us for videos @blackpanelaudio