This project from I.J. Research (best known simply as “Igor”) is a mastering-quality, passive monitor controller. The project is split into two independent units, control and audio, which can be mounted separately and connected via VGA cable. The audio unit employs a minimal signal path with audio passing only through relays and metal film resistors.

Notable Features:

• Separate monitor and control room outputs
• Passive design
• Balanced
• Four stereo inputs
• Two stereo and one sub outputs
• Mono, mute, and talkback functionality
• Big knob adjusts gain in 64 steps of 1dB
• Adjustable offsets for each input and output
• Takes +12V power

Price:

No longer available.

• $116 for PCB and microcontroller
• €370 for full kit, which includes everything except case and VGA cable
• $20 for talkback combiner PCB