Monolith bliss. Have owned them for 30+ years and appreciate them every single day.
SPL Crossover
Takes the Acoustats to a much higher level
Rythmik Audio Dual F12SE sub woofers
Fast enough to keep up with the Acoustats
Innuos Phoenix USB and Pulse Streamer
Very clean signal with a fantastic app (Sense)
Bricasti Design M1S2 DAC
Tested against several high end DACs. This matched or exceeded each of them. Due to the filter options this DAC incorporates multiple final results from other manufacturers.
Technics SL 1500C Turntable
Not the fanciest, but nice enough for my limited use (less than 5% of listening time). The cartridge is an AT540ML upgraded with a RigB chassis (think AT740ML upgraded).
Marantz SACD 8003
rarely used. primarily for SACD playback
Linear Tube Audio MicroZOTL2
Detailed with a wonderful soundstage. My first venture into the world of tubes.