Filther is a CEM3320-based 4-pole low pass Voltage Controlled Filter, with CV control over resonance,V/Oct Tracking, and 2 resonant...

Satan oscillate my metallic sonatas The Atari Goth console is a beginner-friendly patchable drone synth, based on the popular and iconic...

The Samson M30s are super cheap "monitors". They're quite capable, but I felt like they could be improved. There is a switch on the back...

Commissioned build. Switches two sets of stereo pathways to a set of outputs according to MIDI program change commands. Like a...

The Nerve Center Eurorack Module is a 10HP, easy to build and adaptable mixer able to meet any of your mixing needs. It can be a 4:1 mono...

Two SPX90ii units came in for repair. The first one had the common power supply failure (recap recap recap), but the second had a funky...

The Active Multiple Kit is an easy-to-build, low parts count eurorack module that lets you create perfect copies of voltages or audio...

Adding a Constant Current charging circuit to the Boss Katana Mini

Replacing the faders and op-amps on a vintage reverb unit. Using modern replacements and adapters to make it work.

A rough guide on how to add a Dry Kill switch to your Carbon Copy. Proceed at your own risk

A friend asked about modding his Volca Beats to allow individual trigger outs. This would let him sequence eurorack modules with the...

The big repair job of the week is a Roland Super Jupiter, but more specifically the companion programmer MPG-80. The customer's...

A customer brought in a Casio SK1 this week with two requests: 1) Replace the 1/8" headphone out with a 1/4" mono line out. Customer said...

The Passive Multiple Kit is the perfect introduction to synth DIY and soldering in general. With 8 components total and very little...

I'm so excited to say that CCTV is now open! The new shop is at 2808 Rock Bay Ave in Victoria BC. It was such a journey to get to this...

A customer brought in a DM-300 with broken switches. This is a really interesting piece of equipment that I've never seen before, so I...

Kurt Ballou of Converge recently posted his new business card which is in fact a PCB for a distortion pedal titled the Brutalist Jr....

I originally picked up some broken pedals so I could use the cases for my own prototype designs. However, this Tokai Analog Delay would...

The Hum was caused (of course) by faulty capacitors. In this case it was the filter capacitor on the negative bias voltage was a complete...

I came across a vintage tube amplifier on a local Facebook trading group, that piqued my interest. An ELK (Echo) Pro-Sonic EB-103 from...