GB 40

FlexJack swivel jack plug matching every guitar output
Extended frequency response optimized for guitar and bass
Integrated charging contacts

The GB 40 guitarbug is probably the easiest way to turn a guitar, bass, or portable keyboard into a wireless instrument.

The FlexJack swivel jack plug will mate with any type of output jack and is spring loaded to hold the GB 40 securely against the instrument. In addition, the GB 40 is so small it is almost invisible and won't be in your way while playing. Since the GB 40 sits right on top of the instrument's output jack, the noiseless on/mute/off switch and gain control are always within easy reach.

The transmitter shall be a miniature wireless transmitter for direct connection to such instruments as guitars, bass guitars, and keyboards. It shall feature an on/mute/off switch, battery status LED, and input gain control. The transmitter shall provide charging contacts to allow powering by AAA size 1.5 V dry or rechargeable batteries at the user's option. The transmitter's audio bandwidth shall be 40 Hz to 20 kHz, its carrier frequency range 710 MHz to 865 MHz, size 76 x 20 x 28 mm, weight without battery 28 g, RF output 5 mW (ERP). It shall be enameled black with a color-coded battery compartment lid.

Carrier frequency range	710 MHz to 865 MHz
Audio bandwidth	40 to 20,000 Hz
THD	0.8% typ.
Signal/noise ratio	103 dB (A) typ.
Modulation	FM
RF output power	5 mW typ. (ERP)
Power supply	single 1.5 V AAA size battery
Battery life	<11 hours (dry battery); <6 hours (rechargeable battery)
Dimensions	76 x 20 x 28 mm / 3 x 0.8 x 1.1 in.
Net weight	28 g / 1 oz.
Patent(s)	Plug (Patent no. AT 410.994, ZL 021302618, US 6,619,969)