VOX CHECKMATE GUITAR TUNER
Designed by "Vox Sound Limited" in late 1971 and signalled in "Beat Instrumental", "Music Business Weekly" magazine, and the selective VSL catalogue of 1972. At present, only a single example is known to survive.
The device was one of the first non-strobe electronic guitar tuners on the market. As described in April 1972, there were two versions: 1) A straightforward six note tuner, and (2) a unit that enabled an organ to be connected to give the necessary base for tuning.
Thanks to Martin Kelly, a surviving unit.
Vox general (selective) catalogue of 1972.
"Beat Instrumental" magazine, January 1972.
"Beat Instrumental" magazine, April 1972.
"Music Business Weekly" magazine, 4th March, 1972 - pieces on the Frankfurt Music Fair of that year.