How many systems do you have?

Four. Main tube system in a dedicated listening room, a second tube system in the office, a SS system in the workshop, and a SS in the bedroom. 

1 - main 2 channel : Audiovector with Classé pre/power

2 - home theater : Sunfire/B&W with Marantz pre/Sunfire power

3 - office : Sunfire with SVS integrated

4 - garage : B&W with SVS integrated

5 - patio : B&W with Control4 power

6 - car : Burmester

5 plus two headphones setup.

Plus extra components to setup another two systems .

Madness

One, unless my home theater counts. If I lived in a McMansion maybe I’d have another. As it is, I need a second house just for my records. 

I basically want a second system for the main floor of our house for parties and holidays (not my primary system), my office/music room is were 99% of listening is done, but I couldn't part with my old gear (like it too much) so now just need a streamer and sub and then good to go. But already looking at swapping some stuff out on the 2nd system (receiver and DAC).

Wife could care less about surround sound and 2-channel is more then enough for her.