NAD T187 preamp processor for sale. We are downsizing so home theater system is being sold. Excellent condition with light use. Modular design permits easy upgrades so the unit stays current. This unit is pre-4K and I have not done the upgrade but it can easily be done. It is very lightly used. I am the original owner, non-smoking, no pet home. I can't locate owners manual but I printed one on high-quality paper which is included. The display has the original plastic protector which was never removed, see photo, so the display is like new. Audyssey MultiEQ room correction makes setup easy with the included microphone.