Thomas Henry/Fonik X-4046 VCOs

via this auction

"For sale some Thomas Henry/Fonik X-4046 VCOs for Eurorack forma modular synth. I was asked to build several of these for a client who was unable to pay on project completion. For this reason it is being sold as new. These were racked only for testing and calibration, burned in and now ready to go. Really amazing sync and FM sounds, variable ramp output, tons of character all while tracking ~7 octaves.

Waveform outs: Pulse (PW w/sync), skew (variable saw), saw, sine and triangle
Sync input with attenuator
1/v/Oct response
FM (Linear and Exponential) w/attenuators. (AC/DC coupling for Exp input is available in the rear via a simple shunt.
Coarse and fine tune
PWM is voltage controllable with attenuator

Some specifics about this build and why this module is rather expensive.
• NXP 4046 chips
• Conductive plastic pots (increased rotational life)
• Alcoknob heavy phenolic knobs (plastic still on spun aluminum inlays. That's the little dimple you see on the pic)
• Dustcaps on all pots
• Screened cable on the outputs
• Upgraded capacitors
• Upgraded op-amp in CV section (LT1013)
• Countersunk panel screws
• Heat shrink on solder lug connections
• Shrouded polarized headers"