Headphone list:

• Currently in Collection
  008 J.I.S Flat Driver Headphone
  Altone 200
  AKG 61z
  AKG 140 S
  *AKG K141 Silver
  AKG K141 II
  AKG 240 [1980]
  AKG 240 Sextett MP
  *AKG 240 Sextett LP
  *AKG 240 DF
  *AKG 250
  AKG 260
  AKG 280 Parabolic
  AKG 340 [bass heavy]
  AKG 400
  AKG 501
  AKG 550
  AKG 601 PRO
  AKG 712Pro
  Audio Technica ATH-02 - Planer Moving Coil Dynamic 32 ohm
  *Audio Technica ATH-911
  *Audio Technica ATH-909
  *Audio Technica IM03
  Audio Technica M20x
  *Audio Technica M40x
  Audio Technica MSR7
  Beyerdynamic DT 48 25 ohm
  Beyerdynamic DT 202 400 ohm
  Beyerdynamic DT 220 400 ohm
  Beyerdynamic DT 250 80 ohm
  Beyerdynamic DT 250 250 ohm
  Beyerdynamic 440
  Beyedynamic DT 880 250ohm
  *Beyerdynamic DT 880 600 ohm (1980’s)
  *Beyerdynamic DT 990 600 ohm (1985)
  Beyerdynamic Tesla DT 1350
  Creative Aurvana Live!
  Denon AH -D5000 [Markl Modded]
  Dunu Titan 1
  *Etymotic ER 4P
  Earsonics SM64
  Fidue A73
  Fidue A83
  Fostex TRP50 Mk3 [Shure 1540 Pads]
  Flare Audio R2 Pro Titanium in Ear Monitor Earphones
  FLC8S
  Grado GR 10
  Grado 325SRi
  HiFiman HE400S
  HiFiman RE400
  iBasso IT03
  LZ A4
  *MusicMaker Shockwave III
  *Musicmaker TK 13
  Meze 99 Classic
  NAD Viso HP50
  Oppo PM3
  Pioneer SE 02 – [1970]
  Pioneer Monitor 10 [1976]
  Pioneer SE-05
  Pioneer SE-505 2-way Dynamic [1973]
  Prefer HD 95 Rare Earth Super Magnet Studio Monitors
  PSB M4U1
  Shure SE530
  Shure SRH940
  SoundMagic E30
  Sennheiser HD 25 SP II
  *Sennheiser HD 250 Linear I 300 ohm
  Sennheiser HD 250 Linear II
  *Sennheiser HD 400 600 ohm
  *Sennheiser HD 430
  Sennheiser HD 480 II 600 ohm
  Sennheiser HD 530 II 300 ohm
  *Sennheiser HD 540 Reference 600 ohm 2nd edition
  Sennheiser HD 540 Reference 600 ohm 2nd or third edition?
  *Sennheiser HD 540 Reference 600 ohm 1st edition - steel cable
  *Sennheiser HD 540 Reference II
  *Sennheiser HD 540 Reference Gold 300 ohm
  Sennheiser HD 560 Ovation II
  Sennheiser 598SE
  Sennheiser HD 600
  Superlux HD668B
  Sony MDR V3
  Sony MDR V6
  Tennmak Crazy Cello
  Trinity Delta
  *Trinity Delta 2
  *Trinity Icarus III
  Trinity Master 4
  Trinity Hyperion
  Yamaha RH5MA
  Yamaha HP 1
  Yamaha HP 3
  *Yuin PK2
  Yuin G1
  Ultimate Ears 700