I ordered this system for use with all my elec. guitars and for mounting on my pedal board. It runs off my CIOKS AC10 powersupply and requires 12v, about 300ma and positive center.
The specs are a bit fuzzy, the width is really a 1/3 19" rack as you can fit 3 of these units beside eachother in a rack. The depth is only slightly more. Heigth is about 40mm.
The system works very well and I must say this truly defines plug and play. Simply insert the (supplied) AA battery into the receiver, switch on oth units and you are ready to go. The receiver has an output pot. on the front and the transmitter has a gain pot under the battery lid, which btw has an integrated bit for adjusting the pot.
Signal appears strong and I have had no problem moving about outside our rehersal space quite a bit. Soundwise, I can honestly not tell the difference from a HQ cable.
The low price shows in the housing of the transmitter which appears a bit weak. Especially the on-mute-off switch. I wear mine not by the supplied steel clip, but in a cordura belt pouch that I feel protects it better. It also hides the unit.
All in all I must say that I couldn't be more pleased with this buy and will certainly recommend it to anyone that needs a good wireless system and can't afford one above EUR300. Simple, reliable, excellent sound and cheap!