THe RX340 has a funny DC requirement, or is their no DC input at all?
Eric F. Richards wrote:
wrote:

[...]

Like I said about a thousand posts ago, run your gear on 12V. Wellbrook
doesn't sell a cigarette lighter adapter, but you can make one that is
postive ground. Just don't ever screw up and use it for something else.

[...]

I have 12 and 24 volt gear that runs directly off batteries, but there
are times when equipment needs to be isolated or cannot be powered off
12 volt (such as my RX-340). For good or ill, the easiest way to
handle both issues is to go through an inverter, and, unfortunately,
often a wall-wart. Commercially built DC-DC converters give no
guarantee of isolation.

--
Eric F. Richards

"Nature abhors a vacuum tube." -- Myron Glass,
often attributed to J. R. Pierce, Bell Labs, c. 1940