Originally Posted by Arwen
Omar, nothing is clear.
I do not have a two channels set up. I have a 5.1 power amplifier.
I have 5.1 preamp.
My stereo has nothing to do with my surround apart of sharing the front speaker but not in the same time. I can listen to music or I could see a movie. Not in the same time.
You are saying like this: It I play blu-ray a DTS movie in Oppo and get out through Oppo's stereo everything is decoded. I connect to the preamp through Tape input. from there in my preamp it will get out as 5.1 Dolby? Or what?
Is that you are saying?
Ah, I've reread your posts. Okay, I have a better understanding now. Sorry I got a bit confused, I was rushing when I read your posts earlier, and I'd been working all night.
Your current preamp does not have HDMI input, nor does it have 5.1 analog input. It's only form of decoding is Dolby. It has optical and coaxial inputs. It has 5.1 output to your amp.
With your current setup, Optical and Coax will not do you a lot of good. If you go optical or coax out of the OPPO to your preamp by bitstream, your preamp will only be able to decode DD. If you go by LPCM out of the OPPO, everything will be downmixed to 2 channel before being sent to your preamp.
1) what is the input impedance of your amplifier? It should be in your manual's specifications, or available somewhere online.
your amp's input impedance is 47 K ohms or higher, you can try running the 105 directly to your amp as a preamp. Just BE AWARE, you may be happy with it (given the age of your equipment, I suspect you would be happier with it than with your current preamp), or you may not. If not happy, then you'd be in a position of buying a new preamp, anyway.
3) IF your amp's input impedance is BELOW 47 K ohms, you will not be able to use the 105 as a preamp. In this case, you would need to buy a new preamp and a 103, then run the 103 HDMI into the new preamp.