System 1:

Vincent SP-331 hybrid stereo amplifier

McIntosh MC2200

Martin Logan Aerius i speakers

NAD c165Bee preamp

Schiit Modi Multibit

Bluesound Node 2

System 2:

Aric Audio Unlimited preamp, NOS tubes and upgraded capacitors

Aric Audio Single Ended KT88 amplifier

Omega Speaker Systems Super Alnico Monitor with Skylan stands

LampizatOr Amber DAC

Bluesound Node 2

System 3: 

Vintage Marantz Receiver 

Vintage Pioneer SX-780 Receiver 

Technics SL-3300 turntable/Shure M97E cartridge

Akai GX-4000D Reel to Reel

JBL L40

DYI Back-loaded horn with 6.5" Fostex (or Tang Band) single driver  

Chromcast Audio -> Cambridge Audio DacMagicPlus