Bootsy Collins (Parliament, Funkadelic, James
"Why Ampeg? "Because of the quality of sound and if it ain't broke, don't break
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RMS Power Output: 100-Watts
RMS Power Output: 60-Watts in Half Power Mode
LF Driver: 1 x 15" Speaker
HF Driver: Piezo with Level Control
Preamp: Tubes (1 x 12AU7, 2 x 12AX7)
Power Amp: Tubes (4 x Groove Tubes 6L6)
Tone Controls: 3-Band EQ
Mid Tone Control: 5-Position
Ultra Low/High: Yes
Balanced Line Out: Yes with Level Control
Line In/Line Out: Yes
Dimensions (W x H x D inches): 24 x 33 x 16.5
Weight: 117 Pounds
The Ampeg Portaflex "flip-top" bass amp made the Sixties bass revolution possible. You've heard
this all-tube amp on thousands of classic recordings, and the B-15 remains a favorite in recording
studios all over the world. It still looks like the original Portaflex, with its "blue check"
vinyl covering, but this version is bristling with features that simply weren't available when the
originals were built.
For one thing, the B-15 has a more powerful 100 watt RMS all-tube output section. You still get
that vintage Portaflex tone, you just get more of it! Other enhancements include a super-efficient
15" speaker, adjustable tweeter, and a 5-position mid-frequency selector. The B-15 also features a
selectable Pre/Post Balanced Line out, with Level control and ground lift, so you can patch
directly into the front of house or recording console.
Motown's "Funk Machine" session bassist James Jamerson used it for everything, in the studio and
on the road. Authentic down to its "stove-top" knobs and chrome-plated chassis, the B-15 oozes
Ampeg from every pore.
- Vintage Tone and Styling
- 15" Speaker
- 100-Watts RMS