Feature:
The aforementioned lack of frequency changability. The LED display for the audio signal (plus clipping) and the RF strengths are good. It would be nice if a switch was available that would alow me to mute (shut off) one channel independently from the receiver. There is a volume dial on the back, but that is not effective for routine muting. Muting can only be done via the preamp or the analog/computer interfaces.

Value:
The dual mic Nady Encore Duet system is one of the least expensive systems I found. However you get what you pay for.

Sound:
Overall the audio quality is mediocre for general use. RF interference causes static and dropped signals, plus the inability to change channels when needed reduces the quality considerably. The only tunability is the ability to adjust the squelch on each mic channel. Also when only one mic is in use the channel 1&2 combined instrument cable output from the receiver is useless (the unused and thus "off" mic channel introduces over-riding static). Thus in situations when only one mic (channel) is used the single channel XlR outputs are the only useful outlets.

Overall:
I've only had it a few weeks and am considering returning it in exchange for something better.

Feature:
No control over the frequency. The "squelch" simply mutes the sound not the static.

Quality:
They feel cheap and lightweight plastic.

Value:
Poor quality and cheap. I guess you get what you pay for.

Sound:
The sound/tone quality is poor. The static was unbelievable and I had to send them back to the factory for replacment. The mics came back with NEW mics but the same receiver that I sent in for replacement.

Ease of Use:
Not hard to use but not very functional also.

Support:
I had to call and chew out someone at the factory to get them to REPLACE the ENTIRE unit. Still waiting over 3 weeks.