My favourite bit of kit is the bit of kit I have yet to buy. 
I love the way (usually) a new bit of kit lifts the music to an even better place.
But as to 'now' - I guess it is my music collection, all digital (approaching 2tb), which I would be gutted to lose, so I have it backed up twice - once in the cloud.
But current hardware I would say is the Radford Revival STA25 and the non oversampling Chevron Paradox DAC (modded a few months ago). The PMC speakers are also high up there.
The bit of kit that would be a pain to lose is the fanless SSD windows 10 renderer I spent some time building and optimising.
Source: Win10 server, Win10 Mini-ITX Renderer running JRiver & Tidal/Roon
DAC / Preamp: Perreaux DP32, Secondary DAC: Chevron Paradox
Amp: Radford Revival STA25, TubeHunter Class D IRS2092
Speakers:, Tannoy Eatons, Kudos Cardea C2, BatPure Supertweeters, Acoustic Research 8BX (modded)
Power Conditioner: ISOtek Qube 1kw
Currently resting: Radford Revival Prototype preamp, Paul Baldwin 405C amp, PMC LB1 Signature