Vespera Pro: Tube-Driven Electro-Acoustic Synth by MNTRA Instruments

Vespera Pro is built on MNTRA Instruments' acoustic synthesis method. The developer describes it as a transformation process: the raw grit of distorted modular signals is re-amped through physical objects, which reshapes the tone into something new.

The instrument runs on the MNDALA 2 engine and uses Animistic Synthesis, a nonlinear approach in which patches respond to subtle changes in playing dynamics. Sample Start Modulation is used to create more than 128 velocity possibilities, so note articulation changes with touch.

The patches cover a wide range of material, from pulsating rhythms and ethereal atmospheres to gritty textures and drones.

The Pro edition extends the sample range to 6 octaves, from C0 to C6, and includes up to 13 round robins per note. Round robins add natural variation when the same key is played repeatedly, which helps avoid a static, machine-like repetition.

The library contains 140 presets and 83 sample maps, with 25,174 samples in total and a size of 19.3 GB. Samples are provided in 48 kHz / 24-bit stereo in the .mntra format.

Vespera Pro is intended for professional and live-performing musicians who want the full set of features. For a smaller system, the developer also offers a Standard edition with one round robin per note and a 4-octave range.