Roland SH 2 Synthesizer

via this auction
"The SH-2 is a compact, dual-oscillator synthesizer - with fantastic build quality and with features that in its day (1978) allowed it to surpass the capabilities of many larger, more expensive synthesizers.

Oscillators:
The VCO section (2 oscillators) feature multiple waveforms, including: sine, sawtooth, noise square waves and a variable pulse-width (PWM) with both LFO and envelope modulation options. Each oscillator features a 5-octave range and, whilst sharing a master tuning control, VCO2 can be detuned from VCO1 which just massively thickens up the sound.

A square wave Sub-Oscillator produces a tone one octave below VCO1, putting three thick analog oscillators through the internal audio mixer.

Both the VCOs and the Sub-Oscillator can be modulated by Autobend, the LFO which features square, delayed sine wave and 'random' (S&H) waves and of course, manual pitchbend. On the subject of pitchbend, the effect of the pitchbend lever can be switched off on VCO1 and therefore bend only VCO2. Additionally, the effective range of the pitchbend is totally adjustable. this means you can set the pitchbend range to a fifth, and detune only one oscillator.

Filter:
The VCF section of the SH-2 is a 24 dB/octave Low Pass Filter with adjustable resonance, which can be kicked into self-oscillation. The VCF section features include positive and inverted envelope, an envelope follower for the external audio input, three LFO modulation options, adjustable keyboard tracking and of course, fully variable control via the bender section.

VCA:
The VCA section controls the volume via the envelope generator, directly from the keyboard gate signal, or can be left fully open via a 'hold' switch. The ADSR envelope can be triggered by the keyboard, gate signal, both, or the LFO.

LFO:
The LFO offers sine waves with or without delay (great for delayed vibrato on lead lines and string patches), square waves, sample and hold for randomness and a separate non-delayed sine wave for the pulse-width modulation. The LFO speed is of course, fully adjustable."

Note the green case/stand for the SH-101 in the background.