Now my fretless with only piezo pickups have a totally unacceptable interference with an annoying high pitch buzz

He found he got the same buzz on his system as well

no strange buzzing or hiss

The buzz is louder than the actual sound output.

Has a loud buzz when turned on

These have a VERY annoying feedback buzz!!

minimal buzzing not an issue.

With cables, no hum or buzz.

Then, after playing it, there was a very slight buzzing or humming sound (sort of like a single coil pick up hum) even though I'm playing a Gibson style humbucker guitar.

I get occasional dropouts, notice degradation of sound quality about an hour into use (likely from battery slipping in power) and seem to get hum/buzzing at random times too (does not happen with a cable).For home and practice use this is a considerable budget product, but I would not trust it in live applications where sound quality and confidence in wireless connection is a must.

When I plugged it in it would make an AWEFUL buzz

There was an awful buzz when I connected to the new amp.

no hum or buzz during my testing

One word: AMAZING!There is no hum, no buzz, no distance issues (at least in my guitar shop)

The other day, I plugged it back into my guitar and amp knowing it would be dead B

Great u won't be disappointed...