Yamaha EQ-550 (Line Out Fault)
Yamaha EQ-550 (Line Out Fault)
PLEASE NOTE — LINE OUT FAULT: This unit’s Line Out RCA output has an internal fault and carries no signal. The Tape Output works perfectly — please connect this unit via the Tape Output. Priced and listed accordingly; full details in the Known Issue section below.
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 and switches cleaned, lubricated, and treated with DeoxIT
• Slide faders exercised and verified smooth end-to-end
• Spectrum analyzer display tested across all bands
Known Issue
The Line Out RCA output has an internal fault resulting in no signal/sound through that connection. The Tape Output works perfectly, and all other functions — inputs, EQ bands, spectrum analyzer, switching — are fully operational. Priced and listed accordingly; please use the Tape Output for connection to your system.
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
See scratch/dent to upper right corner of faceplate. Cosmetic wear consistent with age — see photos for exact condition. Reach out with any questions before bidding/buying.