I have sent to IDX for recycling in the past just make sure you send them ground
The Americas
IDX System Technology, Inc.
2377 Crenshaw Blvd.
Suite# 160
Torrance, CA 90501
Attention: Recycling
These days for me its usually a rapid test at call or tell me to add $30-50 to bill and take my own rapid test at home then put email results night before.
With more 4 Channel Wireless Receivers coming to the market this upgrade makes a 833 with a SL2 even more powerful 1 4 CH RX in each slot for 8 Channels of wireless plus ability to AES in or Analog in 4 more channels makes the machine a even better value
I prefer to use Vinyl exam gloves then just tie a knob in bottom then I put antenna up the index finger. Gloves are cheaper and also reuse-able as well
https://www.amazon.com/Clinivex-Gloves-Latex-Free-Disposable-X-Large/dp/B08665R2C8/ref=sr_1_3_sspa?dchild=1&keywords=vinyl%2Bgloves&qid=1635939246&sr=8-3-spons&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEySTVCTFVZTUNDVU5ZJmVuY3J5cHRlZElkPUEwOTU3MzYxMVpEOE4xRzNGMzRKQSZlbmNyeXB0ZWRBZElkPUEwNTM4NjczMjkwRlA4MjZFUFpJMyZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU&th=1
I have a Mix pre 6 II with NA on it and an 833 with NA on it. It works very well for productions that are going to do zero audio post. I use it regularly for news live shots and corporate interview style productions. Even in a decent sounding room using it a -2 helps dry the room and make the audio more present. In noisy news live shot situations I have dialed it up to -8 as well. It is worth the money
Call Audio Dept in Burbank I think Gene Martin has a solution for this. Or you could take a Np1 battery gut the inside of it then install a connector on back of battery to power it
This is an issue with power system and unbalanced inputs won't blame the 833 too much. I would suggest trying another power system to see if problem persists.