ALTO Stealth 1 Mono UHF XLR Wireless Audio System, Transmitter and Receiver for Powered Speakers, Mixers and Dynamic Microphones

best of both worlds, mic or speaker
awesome piece kit

Unit is ok
Used it for a normal mic into a radio mic. Distance was not as good as I thought.Used it from mixer to a small speaker, and that worked well.

Well made product easy to setup and use.
This is a well made product that is easy to setup and use. This product is a revelation allowing powered speaker placement anywhere there’s a power socket. It really shows itself off when you are connecting 3 or more powered simultaneously (I’ve tried it with 6 speakers which worked great(Six receivers used)).The only issue with this device is that, if the transmitter is sited too low you will get audio drop outs when people walk pass.I’ve made a tripod tower that allows the transmitter to sit at around 5-6 Ft high off the ground which has eliminates the drop out problem.There’s also no loss in sound quality.This device plus additional receivers are quite expensive and should be looked as an equipment investment. These devices are worth the investment from a time saved and easier setup routine.Great product.

Alto Pro Stealth Wireless MK11
Set up can be very tricky, make sure you read the instructions first, but above all make sure your sound systems are all set to 0 and then gently raise them to make sure you have the right settings, a tiny bit plasticky and the range can be a bit detrimental when objects are in the way especially at the 300 feet distance.

Für den Privatgebrauch oder bei Nutzung einer Hintergrundbeschallung mit niedrigen Pegeln ausreichend. Wen man eine PA damit aber voll ausfahren möchte, nicht zu gebrauchen, da der Rauschpegel in leisen Phasen dann zu hoch ist.

I can report on the question: How well does it do with intermediate walls? This is obviously very dependent on the architecture and wall construction, but perhaps the following will help. I have a configuration where my primary HiFi system is separated from a secondary HiFi system by at least 3 walls for the direct path, plus one that may be intercepting the EM wave tangentially, and with a large refrigerator and double wall oven stack also in the general path.Because the exact path, or shape of the wavefront including diffraction effects, is not easily determined by me, I’ll just note that the walls are mainly 2 x 4 with sheetrock covering. Many incorporate plumbing and electrical wiring. One near the transmitter has a glass covered picture in the direct path. Total distance (as the EM wave flies) is about 66 ft, slanted downward to a lower split level. If this were a pure air path, one would be well within the rated 200 ft performance limit, but with the walls it was a bit of a stab in the dark as to what performance would result.The receivers are indicating four bars reception. Sound is excellent (within the limits of all the components that are in the path). Receiver scan led to channels 001 and 002 being selected, so operation is just above 540 MHz. Standing close to the receivers in the direct path seems to have no effect on indicated signal strength.Additional items needed for my purpose included two Klark Pro 2 XLR splitters to intercept the audio signal between pre-amp and amplifier at the transmitter end, two Sescom AUD-XLR-RCA 1 Channel XLR to RCA Balanced To Unbalanced Audio Converter modules for the receiver end, and various interconnecting cables.One advantage of this direct RF approach over WiFi schemes is avoidance of signal delays; that is, speakers are synchronized. Intermediate listening locations do not have echo like sound.