The GK-3b system can be used on most basses to add a hexaphonic pickup to your bass, which enables you to connect to devices with a GK-input (like Roland GK guitar synthesizers and effect units). The installation kit offers the same functionality as the outboard GK-system, with program change and source switches as well as Synth Volume. Takes a little installation effort, but any guitar technician should be able to install this system, and you may do it yourself as well, if you are a little handy with tools. Using the installation kit makes the
When installed and adjusted correctly, the unit provides great string-by-string tracking and subsequent MIDI tracking. Note that the unit itself does not output MIDI signals, and requires the use of a converter (such as the mentioned Roland GK-synthesizers or similar). Also note that tracking below an open A-string will suffer from a bit of latency due to the time required for pitch detection. All in all, the Roland GK unit with a compatible converter or synth device is an excellent entry point to the world of MIDI bass.
