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