Vintage dbx Model 1BX Dynamic Range Expander in very good working condition.

Fully tested and functioning properly. Controls, switches and LED gain-change display are working as they should.

This is the original large-format 1BX with wood side panels, brushed aluminum trim and the classic 10-LED gain-change display. The 1BX was designed to increase the perceived dynamic range of recorded material and features adjustable expansion and transition level controls, along with tape/preamp routing.

Cosmetically, the unit is in very good vintage condition with normal signs of age and use. The wood side panels present nicely and the front panel, lettering and controls are clean. There are some scratches/scuffs on the top cover and other minor age-related wear. Please review all photos for exact cosmetic condition.

Features:

  • Stereo dynamic range expansion
  • Adjustable expansion from 1.0 to 1.5
  • Adjustable transition level
  • 10-LED gain-change display
  • Tape / Pre source selection
  • Pre / Post operation
  • Quad Coupler connection
  • Original wood side panels
  • Made in USA
  • 117V / 50–60Hz

Serial No. 11062

Tested and ready for use. Includes the dbx 1BX shown in the photos.

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Listed2 hours ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more
Brand
Model
  • 1BX Dynamic Range Expander
Finish
  • Black
Categories
Year
  • 1970s

Product safety information may be available here.

Old Soul Audio

Ocala, FL, United States
Joined Reverb:2026

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