Connection help

Now we are on the right track everyone. The only issue i have ewith connecting the HT receiver which for clarity is a rotel 1570 into one of the preamps inputs which is a rogue metis is I use NOS tubes in the pre and dont want to wear them out watching TV, movie etc.
Bob's post about sharing the fronts is the crux of the situation. I want the amp for music only.
I was wondering if I used Y connectors at the power amp and ran ics from both the pre and HT receiver to the amp that way if it would work better than a speaker switch
thanks, I almost have it figured out

I was wondering if I used Y connectors at the power amp and ran ics from both the pre and HT receiver to the amp that way if it would work better than a speaker switch

No, it would not be better than a speaker switch as whichever was feeding the amp would see the high impedance at the amp input in parallel with the much lower output impedance of the other pre out. The resulting impedance would be much to low to perform properly.

However, you can use a high quality line level selector switch between the pre outs and the amp inputs. In that way you can easily select which pre outs is feeding the amp.

I was wondering if I used Y connectors at the power amp and ran ics from both the pre and HT receiver to the amp that way if it would work better than a speaker switch

It's generally not a good idea to connect two line-level outputs together, even if you avoid having both components turned on at the same time. Depending on the particular designs it might work ok, or it might degrade sonics to some degree, or it might even compromise long-term reliability.

What would work well, if you want to use the same power amp for both purposes, is to insert a line-level switch to select whether the pre-outs of the receiver or the outputs of the preamp are routed into the amp. The DB Systems DBP-2JAU/5 ($110), listed near the top of this page, would be a good choice. See the links just above it for the DBP-2J/5 for further info.

The other choice, as you realize, would be a speaker-level switch. I doubt that the line-level switch would have a perceptible effect on sonics, but I wouldn't be too surprised if a speaker-level switch did have a slight effect. Other opinions may differ. I did use that specific DB Systems switch in my system many years ago, btw, with excellent results.

Regards,
-- Al

P.S: Just saw JJ's post. Great minds think alike!

Thanks gent! Now Im making progress. I think I prefer the line level switch. Would you say the one listed is best, or should I look somewhere else
thanks