AKG SR40 & GB40 UHF Wireless Guitar System (NN) – Backstage Music
AKG Guitar Bug (gb40) Wireless Transmitter GB 40 for sale online | eBay
GB40 + SR40D - AKG GB40 + SR40D - Audiofanzine
Musiekwêreld Bellville - Audio Deal of the Week AKG WMS40 Guitar wireless system for only R1995. The GB40 Flexx guitarbug is probably the easiest and least invasive way to integrate a guitar,