13-Pin Input Breakout

Roland/BOSS GK Guitar Interface

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7-Channel Amplifier-Attenuator

Low-noise AC-coupled Attenuation or Amplification up to 40dB

13-Pin Output Breakout

Roland/BOSS Guitar Synth Interface

Hex Fuzz Amplifier

Individual String Fuzz or Overdrive Distortion

19-Pin Input Breakout

Cycfi Research 19-Pin Guitar Interface

ATG

Auto-Tune® for Guitar

Hex VCF

6-Channel VCF with Master Controls for Hexaphonic Processing

Hex VCA

6-Channel VCA with Master Controls for Hexaphonic Processing

Hex VU Meter

Programmable VU Meter for Audio Signals

Hex I/O Expander

SynQuaNon Audio and CV Bus to 3.5mm Jacks Expander

Hex Bypass
6-Channel CV-controlled True Bypass for Audio or CV Effects

7V GK Power Supply

Eurorack Power for GK Guitars

Piggyback Power Supply Filter

Fused Filtered Reverse Polarity Protection

Nexus® GK Attenuator

Cycfi Research Nu Multi to GK Input Matching

Nexus® GK Upgrade (Custom Installation)

Cycfi Research Nexus® Breakout Box Upgrade with Roland GK3 Electronics