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Details: "Synthesizer 101 This is a self-contained semi-modular synthesizer with a 37-note (F-F) keyboard. It features an ADSR, LFO, Portamento, a VCO (with pulse width modulation and a tuning knob marked in Hz from 10Hz to 10kHz), white or pink noise, an audio mixer (with sliders for VCO, Noise, and External Input), a high-pass filter, a low-pass VCF, and a VCA with input for LFO. There are also buttons for auto-glide and manual-glide and an A-440Hz tuning oscillator. All of this in 21 sliders, five knobs, 14 mini-jack sockets, seven switches, and three 1/4" jacks (for headphone and high and low outputs). Expander 102 This is essentially a keyboardless Synthesizer 101, with a few exceptions. It was designed to sit upright, behind the 101. Instead of glide controls, the 102 has a sample-and-hold module with variable lag time, and instead of noise, the 102 has a ring modulator. The 102 also features weak and strong sync inputs and a mix cascade jack socket instead of the tuning oscillator."