Headphone Inventory

(ascending, chronologically)
Koss HV/1A (1974)*
Koss Porta Pro (1984)
Sony MDR-V6 (1985)*
Sennheiser HD 545 [2 - right & left ear] (1998)
Shure E2c (2002)
Sennheiser PX 100 (2003)*
JAYS d-JAYS (2011)
Phiaton PS 200 [1 - left ear] (2012)*
Fostex T50RP (2013)
Sony XBA-30ip [1 - mic/control] (2013)*
Om Audio Inearpeace [1 - plug, twice] (2014)*
FiiO F9 [2 - plug] (2017)
FiiO FH1 (2018)
FiiO FH5 (2018)*
Sennheiser HD 650 (Massdrop HD 6XX) (2018)
FiiO FA7 (2018)
FiiO FA1 (2019)
Qudelix QX-over (2021)
AKG N400NC (2022)
Moondrop Chu (2022)
7Hz Timeless (2022)*
AirPods Pro (2nd generation) (2022)
7Hz x Crinacle Zero:2 (2024)

[1] permanently out of commission due to interconnect failure
[2] still alive, but solely due to replaceable cables
* no longer in possession

Headphone Amp Inventory

Penguin Caffeine Ultra (2008)
FiiO E10* [1 - jack solder joint] (2011)
Schiit Magni* (2012)
FiiO E10K (2018)
FiiO μBTR (2018)
Radsone EarStudio ES100 (2018)
Schiit Magni 3 (2018)*
Topping DX3Pro (2018)
Qudelix 5K (2020)

Source Inventory

FiiO E10K (2018)
FiiO μBTR (2018)
EarStudio ES100 (2018)
Topping D10 (2018)*
Topping DX3Pro (2018)
Qudelix 5K (2020)

Cable Inventory

Three kinds: (1) working cables with graduated strain reliefs, (2) non-working cables with non-graduated strain reliefs, (3) working cables with non-graduated strain reliefs that make me nervous.

Power-Related Components

Various Panamax products.

Other Audio Equipment

Monsoon planar magnetic speakers.
JBL Professional 305P MkII monitors

Audio-Related Tweaks

Shrink tubing compensating for interconnect design shortcomings.

Music Preferences

Classical, rock, jazz, bluegrass, and most things concurrently good and earnest.

Gender

Male

Occupation

Engineer