Steinberg Retrologue 2 (ESD); virtual synthesizer plugin; virtual-analog sound engine with 3 main oscillators (Single, Sync, Cross, XOR, Multi), sub oscillator, noise generator and ring modulator; up to 8 detunable voices per oscillator in Multi mode; 24 filter types including LP, HP, BP, BR, morphable and asymmetric variants; filter distortion with 6 types: Tube, Clip, Bit Reduction, Rate, Rate KF, Off; 3 envelopes (Amp, Filter, Env3), ADSR or bipolar structure with velocity scaling; 4 LFOs (2 mono, 2 polyphonic) with selectable waveform, shape, phase, tempo sync, beat sync, random start, fade-in, retrigger and key follow; 16-slot modulation matrix with offset, modulator, depth, free source and destination selection including bus routing; arpeggiator with Step, Chord, Up/Down, Random, Direct modes, velocity modes (Original, Controller, Hybrid), up to 32 steps, key select, legato, step transpose, controller lanes (MIDI CC 110–112) with dedicated modulation path; integrated effects rack with 6 serial inserts: resonator with 14 filter shapes and 3 LFOs, phaser, mod FX (chorus, flanger, ensemble), delay (stereo/cross/ping-pong), reverb with multiband control and chorusing, 4-band EQ with parametric mids and shelving filters, high & low cut; quick controls for 8 freely assignable parameters; MIDI learn and definable mod wheel ranges
