Question regarding adding a poweramp to an integrated amp

@americafirst 

To answer your question, the amplifier portion will NOT turn off.  I believe it is class AB power, so it will still continue to continue to generate some heat, but not to the level of a class A unit.

What you don't mention is if you are using this for 2 channel or multi-channel/home theater.  If only just for 2 channel, you are better off just putting the money into a new (or new to you) integrated amp.  Most likely it will have a better preamp section than Lexicon's bottom line home theater receiver. 

Also, I seem to remember, but don't hold me to it, that Lexicon got criticized for the RV-5 because they just rebranded/borrowed the internals from someone elses home theater receiver, similar like they did with Oppo's blu-ray player.

Correct, the amps listed were straight out rebranded Bryston's.  I did a little further digging on the RV-5 Receiver (which is a home theater receiver, not a 2 channel integrated) and it appears that it was not a complete rebrand of a Harman Kardon.  It appears that the amp "modules" were sourced from a HK receiver, but a significant portion of the preamp/processor were Lexicon developed.

It was introduced in 2006, so it has some significant age on it, especially since it is an AV receiver.  And according to it's specs, HDMI is v1.1 and limited to 1080i (not 1080p), and 85W 2 channels driven, 8W for all channels driven.  Market value in 2025 is probably around $200 or less.  HiFishark is showing one listed in 2022 for $399.  So recapping, etc. is, IMO, is not worth the money.  (Unless it has sentimental value...)

So, @americafirst, how are you currently using yours? And what is the rest of your system?