I have a Denon 4520CI which is a 9.2 channel powered and a 11.2 channel processing receiver. It only has a 7.1 pre amp input and I would like suggestions as to what type of pre amp to use to upgrade my performance in my system. Would a 7.1 Dolby Atmos pre amp improve my system? Or due to the limits on my pre amp inputs, am I stuck with buying a new receiver? I bought this Denon in mint condition at a great price, but the price blinded me to possible upgrading options. The Denon only has Audyssey DSX, DTS Neo X and Pro-logic II Z processing for more than 7 channel surround sound options. My concern is that the 7.1 channel input will leave me with 2 channels powered un used. At $400 including the remote and setup mic,
I couldn't let that Denon pass. All suggestions, ideals and thoughts are welcomed. If anybody would know what to do, it would be you guys and gals. Thanks in advance for your help