This vintage API 550A equalizer is in great original shape. It used to belong to the famous engineer Sylvia Massy. It works great and has no issues. This unit has some scratches and stains, which is very normal for these 50 years old units. This unit was just tested thoroughly. It sounds great!

The serial number is 7674 and it was manufactured in Hintington, NY, in the 70s. Circuit is original, including the opamps. No mods. Its ready to fit a regular 500 series rack/Lunchbox.


I can ship worldwide.

Local pickup in Nashville available.

Listed5 days ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
Brand
Model
  • 550A 500 Series 3-Band Equalizer Module
Finish
  • Black
Categories
Year
  • 1970s
Made In
  • United States

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Nashville, TN, United States
Joined Reverb:2015

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