When and what was your last significant equipment upgrade?

Parasound JC3+ phono preamp -- what a fine piece of gear and a real value.

A used Matrix M Stage HPA-1 headphone amp/preamp (2012/v.2). It cost little & really impressed me sonically, bettering my Burson Soloist in certain ways. I'm upgrading it with w/OPA627AP opamps & using as my day-to-day preamp.

I just completed a reference DHT  Triode preamplifier ,
and a F6 Pass labs 1st watt amplifier  this builder is excellent with several degrees in electrical engineering
my pre has the 26, and 101 D  tubes.

https://simplepleasuretubeamps.wordpress.com/

 jond, its brown, doesnt work on holidays or weekends and comes pre broken (in)

ProAc Studio 148 mini towers in mahogany in Jan 2016. Check my system page for photos and details. Great speakers with amazing clarity in mids and highs plus the downward firing port helps with flexible placement and great bass response to 20hz. 

I also have a UPS amp and preamp. Looks suspiciously like Pass gear

@winoguy17 UPS is making preamps now? :p  Come on tell us what you’re getting dude!

 Awaiting a new (used ) pre-amp from UPS as I type.

Earlier this July my Meridian 808.3 became an 808v6.  No regrets!

May 2016 replaced my Sonos Connect with an Auralic Aries Mini and no more streaming dropouts!

the O2 is awesome

Waiting to arrive a JDS O2 headphone amp for my Sennheiser Momentums. I borrowed a friend's to audition and was soon sold, it sounded tremendous!

Aesthetix Romulus to Eclipse version, with NOS Telefunkens

April 2016, Monitor Audio PL500 speakers. 

May 2011 -- Mytek DAC-preamp instead of Classe 30 preamp.

February 2016 - VPI Prime with Transfiguration Phoenix S cartridge.

Audio-GD Master 7 R2R Dac
Alan