Hi, new to the forum, hoping I can get a question answered. I have picked up a nice used HK AVR 230 6.1. On the back, I have a section of outputs called "pre amp" outputs, with one set of outputs for each surround channel. I am a little confused by the name - does it mean this is a signal that can be sent to a seperate pre-amp, or is it a pre-amplified signal that can be sent direct to a power amplifier, with the volume controlled by the HK ? Thanks!