For sale is an all-original 1966 Ampeg B-15N Portaflex "Flip-Top" bass combo amplifier in iconic "Blue Check" vinyl. This unit features the desirable B-15NF fixed-bias circuit configuration utilizing a 5AR4 rectifier and dual 6L6GC tube layout. The amplifier head and speaker cabinet are a verified factory match; the chrome chassis serial number is 040261, and the original 15-inch CTS speaker is stamped with EIA code 137 628, dating its manufacture to July 1966. This complete, era-correct specimen delivers the foundational studio bass tones that make the B-15N highly sought after by collectors and engineers alike.

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

Listed3 days 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
  • B-15N Portaflex 25-Watt 1x15" Bass Combo
Categories
Year
  • 1966
Made In
  • United States
Power Tube Type
  • 6L6
Number of Inputs
  • 3 Inputs
Number of Channels
  • 2 Channels
Electronics
  • Tube
Speaker Configuration
  • 1x15"
Direct Output
  • No Direct Output
Reverb
  • None
Output Power (Watts)
  • 25

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Ron’s Rock Shop

San Diego, CA, United States
Joined Reverb:2026

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