The Access Virus 37 synth-action keys with velocity and aftertouch, pitch bend and modulation wheels, and a pulsating illuminated rear logo. 

Three main oscillators plus a sub-oscillator and noise source per voice. Modes include Virtual Analog, HyperSaw (up to 9 detuned saws per voice), WaveTable, GrainTable, and Formant Table.

Two fully independent multi-mode filters with serial, parallel, or split routing, including low/high pass, band pass, band stop, and self-resonating Moog ladder filter simulations.

18-routing modulation matrix, three LFOs (usable as ramp generators), and two multi-stage ADSTR envelopes.

Delay and reverb per multi-mode slot, distortion, lo-fi algorithms, chorus, phaser, character control, and a global vocoder.

USB connectivity and VirusControl software allowing the hardware to operate as a sample-accurate VST/AU plug-in within major DAWs, functioning simultaneously as an audio and MIDI interface.

Six balanced analog outputs with 24-bit/192kHz D/A converters, two 24-bit A/D inputs, headphone output, S/PDIF digital I/O, and MIDI In/Out/Thru. 

TI Polar is a keyboard synthesizer that has significantly shaped the sound of modern music. The Virus TI features an arpeggiator, a dual DSP system, and MIDI ports. Its USB connection handles audio, MIDI, and data, seamlessly bridging the gap between hardware and DAW.
still plays well, but I never really use it, so time to sell.

Firmware and software my need updating.