Headphone Inventory
Westone ES5 (sound quality or isolation)
Apple AirPods (situational awareness)

Past Owned... many others auditioned:
Sennheiser HD800
Stax SR-009
Stax SR-007 Mk1
Stax SR-001
Etymotic HF3
Plantronics Backbeat Fit (gym, running, situational awareness needed)
Sennheiser PMX 685i (gym, running, situational awareness needed)
MrSpeaker Mad Dog
Etymotic EP4
Koss ESP-950
Grado HP-1
Sennheiser HD580
Stax SR-Lambda Signature
Stax SR-5
AKG 240 (from the 1970s)
Headphone Amp Inventory
See Sources

Past Owned (or extended loan... thanks Paul, Andy). Many others auditioned:
Headamp GS-X mk2
Schilt Ragnarok
Headamp Pico Power
Headamp Blue Hawaii
Headamp GS-1
Gilmore Lite
Headroom Max
Grado RA1
Stax SRM-T1W
NAD 3020 to drive Stax energizer and it's headphone jack
Source Inventory
iPhone and Macintoshes feeding mostly Apple Loseless to:
EarStudio ES100

Past Owned... many others auditioned:
Chord Mojo
Schilt Yggdrasil
Schilt Gungnir
Lavry DA-11
CEntrance HiFi M8
Geek Out V2
Chord Hugo
AQ DragonFly
CEntrance DACport
Fostex HP-P1
HRT Streamer II+
various CD players
various turntables and cartridges
Cable Inventory
anything of sufficient gauge, mostly monoprice
Other Audio Equipment
KEF LS50 Wireless Monitors
Previously Classe | Chord > Logan Aerius speakers
Audio-Related Tweaks
Music Preferences
Focus on jazz, singer/song writers, but pretty much everything but country/western (western part), gangster rap, and bad pop.
Cervelo R3, Zojirushi double walled mug, Garmin 935xt
Engineering Director, typically focus on DevSecOps


Pocket: iPhone > (EarStudio ESS100 > Westone 5ES) | AirPods
Current Home: No headphones?! Mac (Roon) > KEF LS50 Wireless
Last "Real" Headphone System: Lavry DA-11 > Headamp GS-X2 > HD800
Favorite: Schiit Yggdrasil > Headamp Blue Hawaii > Stax SR-009