What are the cheapest in-ear wireless UHF systems that accepts at least 10 receivers?

Question

And what are their disadvantages comparing to the high-end ones?

Answer 1

Rafael,

I don't know the cheapest ones, but I can tell what they compromise relative to the high end product:

1. Spectrum availability - high end products have more frequency bands available

2. Transmitter output circuitry - high end units have better (and sometimes stronger) output circuitry that introduces less spurious noise into adjacent frequency bands, and is less susceptible to IM distortion

3. Compander quality - high end products have improved compander circuitry that are more audibly transparent

4. Stereo separation - high end products have better stereo separation and frequency response that extends closer to the 19kHz stereo carrier center frequency.

5. Receiver pack flexibility/durability - the higher end product have smaller, better built receiver packs with easier selection of frequency and useful features for the monitor engineer like frequency scrolling

6. Antenna combiner quality - high end product have better antenna combiners available for using multiple systems together.

7. Antenna options - high end systems have different antenna options for maximum flexibility in pattern control and polarization flexibility.

8. In ear amp quality - the high end product have better output drivers work with low input impedance multi-driver in ear monitors.

I suggest you look around for closeout and/or used Sennheiser G2 product. It is very well proven on tour, and has been largely replaced at the high end of the industry with the G3 product and/or Shure PSM900.

If you are outside the United States, then look around for US product in the 700MHz band that people are selling here as a result of the rule changes from the FCC in 2010.