I have a KX-R (now Twenty) and a pair of MX-R Twenties.
I did have some issues with DC offset due to an improper AyreLink cable, but that was solved very quickly.
Other than that, no overheating or any other issues.
You may want to double check your preamp to make sure it isn't producing or passing any true DC offfset, but since it does it with no connection it sounds like an internal issue and your dealer should be able to get it sorted quickly.
Last edited by BillK; 03-17-2017 at 09:47 AM.
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