Collide 4

A quadrature spectral computer in 20 HP, co-developed with Hainbach: a fully analogue Eurorack re-imagining of the lock-in amplifier, as a synth voice and an audio processor.

Key features

• A pingable, self-oscillating variable-bandwidth filter between pre- and post-filter gain stages worth up to 130 dB of amplification
• A through-zero sine/cosine quadrature oscillator
• A Hilbert transform network for frequency shifting, and dual ring modulators with output lowpass filters
• An X/Y quadrature output section with sum, difference, magnitude and phase outputs, suited to stereo
• A level/overload lamp and dual-colour LEDs on the outputs
• CV over every parameter with temperature-compensated volt/octave tracking, and trimmers reachable from the front panel