Karl Marx Stadt

XAOC Devices' Karl Marx Stadt (Legacy, 2013), a 42 HP panel that turns Doepfer's DIY Synth board into a self-contained analog monosynth voice: VCO, LFO, multimode VCF, VCA, ADSR, slew limiter and inverter, normalled MS-20 style behind the panel and broken by patching into 30 patch points.

Key features

• VCO: COARSE and FINE TUNE, FM EXP and FM LIN, PULSE WIDTH and PW MOD, saw and pulse outputs, sync
• LFO: LFO SPEED slider, LO / HI / STD range, pulse and triangle outputs
• VCF: CUTOFF, RESONANCE, low, band and high pass and the L-N-H mix; the resonance feedback broken out (RES FDBCK IN)
• VCA with three audio inputs and two CVs; ADSR on four sliders with its speed range; slew limiter and inverter
• Requires Doepfer's DIY Synth board, sold separately