Thanks for all the replies on the Onkyo as a preamp (didn't mean to hijack think it addresses subject of post). The manual says you can do it but again, I was reluctant since the jumpers seemed reluctant to be removed and proceeding with caution (checking first). I don't have a power amp yet, but since I acquired the JBL L112s I've been looking at a few and searching for something in the 200-300W RMS range. I'm slowly moving up and already really like the TX-4500 through the L112s (although hybrid running mids and tweets and woofer from L-100s until I get both the 128Hs back from recone/surround. That alone should improve things. I also need to find a turntable to match up with what I have, but that's another rabbit hole.