Anybody use a stereo amp with their ht? And ..

Mine works just fine

Depends on the gear, I sometimes use play through, I use Mac. 

The cabling between the two, and the type of gear make a BIG difference.

I notice a difference, but not a bad difference. One is a C2500, and I just put a MX150 back in service. I was using a MX120 (I love the 3 speaker set up on that unit..) I didn't like the 121. or 151

If the kids come over I have a HT kinda set up.. As much as I can stand anyways. I'm not much of a TV or HT guy.. A good concert, I'm game..

Laptop yes, TV no. 30 years now.. :-) 

Regards

ht sounds are diminished after signal flows thru the stereo preamp

Can you be more specific what differences you’re hearing?  Are you using a center channel speaker in HT?  What interconnects are you using from preamp outs to the stereo pre?

I run an Ayre KX-5 Twenty with an Anthem AVM60 processor via HT bypass.  Absolutely no loss in fidelity on either side (HT or stereo).  The only thing damping my stereo listening is that 65" flat screen in the middle of the room.  But nothing is perfect...

For stereo, balanced analog from an Ayre QX-5 Twenty (Roon endpoint) or DX-5 DSD (disc player) goes directly to the KX-5 Twenty preamp and VX-5 Twenty amp.

For surround and HT, HDMI audio from the DX-5 DSD goes to a Bryston SP3 processor; analog front LR from the SP3 goes to a by-pass input of the KX-5; analog surround goes to a pair of NAD DC amps.

HDMI video goes from the DX-5 DSD to a Sony projector.

I have a Krell Showcase surround processor and a Luxman CL38U SE tube preamp. I use the RCA connections in my Bryston amp for my Luxman and the balanced connections in my Krell. I just use the switch on the amp to power either setup. No HT passthrough.