The Ampeg B-15 bass amplifier is renowned for shaping the electric bass sound on iconic recordings from the 1960s and 1970s, including Motown classics and Stax hits. Known for its warm, fat fundamental tone, this 30-watt, all-tube 1x15 speaker amp delivers a rich character that has influenced rock, funk, and soul music. Its distinctive sound foundation remains a benchmark for bass tones in studio production.

Developed by Brainworx, this plugin faithfully recreates the Ampeg B-15N Heritage bass amplifier, capturing the circuitry, tone stack, and signature thump of the original unit. Designed specifically for UAD-2 hardware and Apollo interfaces, it offers users the chance to track and reamp with authentic all-tube B-15 sounds. Two vintage circuit versions from 1964 and 1966 are included, each featuring adjustable bias controls to refine the tonal response, complemented by a meticulously modeled two-band Baxandall EQ.

Beyond authentic tone, the plugin includes 42 high-end recording chains with various cabinet and microphone options, recorded in a professional studio environment to provide a wide palette of classic bass sounds. Unison technology ensures that the plugin delivers the dynamic feel and responsiveness of the original preamp section, while physical input impedance and gain staging controls provide an intuitive hands-on experience. This makes the plugin an essential tool for producers and engineers seeking the legendary sound and feel of the Ampeg B-15N in their digital setups.