The GR-700 Guitar Synthesizer, G-707 Guitar Controller, released in late 1984, and the GR-77B Bass Guitar Synthesizer, released around a year later, from the Roland Corporation.
The device names and model numbers are typeset in Earth, with altered A’s and a slightly different G. Numbers are also slightly different to those seen in listings. These may be yet unseen alternate glyphs or modifications. Earth was also used for the device names and numbers on many other Roland products released around the mid-1980s. Other text featured in the brochure and on the devices appears to be set in Helvetica.