I'm not sure you can get there from here. As you describe it, you'd have to hook your DVD player to both your A/V receiver and your stereo integrated. Since both would be on, the integrated's amp section would be receiving a signal from both preamp sections! Not so good.
As I see it, you have several alternatives:
1) Just use the Rotel. Try it, at least. It might be just fine as is.
2) Get a 2-channel power amp, and use the Rotel preamp section for stereo.
3) Get 2-channel separates. That way, only one preamp has to be on at a time.
As I see it, you have several alternatives:
1) Just use the Rotel. Try it, at least. It might be just fine as is.
2) Get a 2-channel power amp, and use the Rotel preamp section for stereo.
3) Get 2-channel separates. That way, only one preamp has to be on at a time.