Preamp and receiver together with power amplifier ?.? Help


Hey guys I’m running a Denon Poa 2800 amplifier with a Denon 2801 receiver. My question is when I had the power amp 2800 tested at the sellers house he tested it with a preamplifier. Once I got home I hooked up the power amp 2800 to my denon 2801 receiver yeah it does sound a lot better then it originally did but in my opinion the vocals don’t sound like their jumping out of the speaker as much as it sounded when I tested at the sellers house with his preamplifier. In my opinion from what I have heard with the tests I believe having a preamplifier rather then a receiver sounds better listening to music wise ?? What do you guys think??

I also want to ask you guys is it possible to hook up the power amplifier to a receiver and a preamplifier at the same time? Is there even any RCA cables out there that have to plugs that go into the power amplifier and then have 4 other plugs coming out on the other end? so 2 pairs of white and red cables??? Is it possible and how would I go about setting them up? Bear in mind I am also pretty new to the audio world.

Cheers

Tony
daoki
If you had a preamp then no need for a receiver! Unless you want to listen to AM/FM radio. Then you would use an interconnect from "tape out" jacks on the receiver into an "aux" input on the preamp. 
So instead of using the optical cable from my tv to receiver I would now only being using the rca cable red and white from tv to preamplifier ?but my question is if I connect my preamplifier to the power amp using the red white rca cable. Then how would I connect my tv to th preamp for it to respond to th tv signal ? Or is there a seperate output jack on the preamp for the tV? And do rca cable change the quality in sound much compared to a optical cable?
Yes, a separate preamp should sound better than the receiver! Buy a Denon preamp to match with the Denon amp! There is a Denon PRA-1000 preamp for sale right now on EBAY. $375 + $45 shipping from NC. Seller is "harenceg" - the original owner. I'd buy this one myself if I didn't already have too many preamps! It is an excellent preamp, worth collecting/using!