All electric basses have been sampled from both the direct input (DI) and an amped perspective. A knob on the interface allows phase-aligned blending of the two, or the selection of one or the other. For the upright bass, the same knob allows mixing of the direct input and a phase-aligned tube mic output capture of the same sessions. Other onscreen controls allow pitch bend range adjustment, pick noise and fret noise controls, release layer controls, adjustable velocity curve, and instant and detailed control over EQ. A comprehensive selection of effects is included, including an octaver, compression, saturation, lo-fi, distortion, limiter, phaser, flanger, chorus, reverb, and delay.

Performance features include an innovative legato tool designed for true finger-smooth playing, and a customizable vibrato engine with control over vibrato types, speeds, and depths. Rather than opt for traditional LFO-based vibrato, BASiS uses a sophisticated character vibrato modeled after real bass players, completely controllable from the keyboard and onscreen interface. Randomized pick noises, release samples, and fret noises add to the realism of each instrument.

BASiS is powered by the Kontakt Player 2 engine, offering total integration into all major sequencers via its AudioUnit, VST, and RTAS plug-ins, as well as standalone operation. It also works perfectly within both Kontakt 2 and Kontakt 3.