MixingRoom. List of headphones currently included (both as monitors and as target):

1MORE MK801
Abyss AB-1266 Phi
Abyss AB-1266 Phi CC
Abyss Diana Phi
Abyss Diana V2
Acoustic Research AR-H1
AKG K240 Studio
AKG K371
AKG K52
AKG K612 Pro
AKG K701
AKG K702
AKG K712 Pro
AKG K72
AKG K812
AKG K872 Pro
AKG K92
Apple AirPods Max
ASTRO A40 TR
Audeze LCD-1
Audeze LCD-2
Audeze LCD-2 Classic
Audeze LCD-2 Closed Back
Audeze LCD-24
Audeze LCD-3
Audeze LCD-4
Audeze LCD-GX
Audeze LCD-MX4
Audeze LCD-X
Audeze LCD-XC
Audeze Mobius
Audeze Sine DX
Audio Technica ATH-A1000Z
Audio Technica ATH-A2000X
Audio Technica ATH-A2000Z
Audio Technica ATH-A900X
Audio Technica ATH-A990Z
Audio Technica ATH-AD1000X
Audio Technica ATH-AD500X
Audio Technica ATH-AD700X
Audio Technica ATH-AD900X
Audio Technica ATH-ADX5000
Audio Technica ATH-AWAS
Audio Technica ATH-AWKT
Audio Technica ATH-EW9
Audio Technica ATH-G1
Audio Technica ATH-L5000
Audio Technica ATH-M40x
Audio Technica ATH-M50x
Audio Technica ATH-M50xBT
Audio Technica ATH-M70x
Audio Technica ATH-MSR7b
Audio Technica ATH-R70x
AudioQuest NightHawk
B&O BeoPlay H7
B&W PX
Beyerdynamic Amiron Home
Beyerdynamic Aventho Wireless
Beyerdynamic DT1350
Beyerdynamic DT1770 Pro
Beyerdynamic DT1990 Pro
Beyerdynamic DT250
Beyerdynamic DT770 Pro
Beyerdynamic DT860
Beyerdynamic DT880 Pro
Beyerdynamic DT990 Pro
Beyerdynamic T1 (3rd Gen)
Beyerdynamic T5 (3rd Gen)
Beyerdynamic T5p (1st Gen)
Beyerdynamic T70
Beyerdynamic TYGR 300 R
BLON B20
Bose Noise Cancelling Headphones 700
Bose QuietComfort 35 II (QC35)
Campfire Cascade
DCA Aeon 2 Closed
DCA Aeon 2 Noire
DCA Aeon 2 Open
DCA Ether 2
DCA Ether C Flow 1.1
DCA Ether Flow 1.1
DCA Voce
Denon AH-D5000
Denon AH-D5200
Denon AH-D7200
Denon AH-D9200
Drop + Sennheiser PC38X
Drop x THX Panda
E-MU Teak
E-MU Walnut
FiiO EH3
Final Audio D8000
Final D8000 Pro
Final Sonorous VIII
Final Sonorous X
Fischer Oldskool RPM 33 1/3 (Zeppelin & Co Limited Edition)
Focal Celestee
Focal Clear
Focal Elear
Focal Listen Professional
Focal Radiance
Focal Stellia
Focal Utopia
Fostex TH500
Fostex TH610
Fostex TH7
Fostex TH900
Fostex TH909
Fostex TR80
Gold Planar GL2000
Gold Planar GL850
Grado GW100
Grado PS500e
Grado SR125e
Grado SR325e
Grado SR60e
Grado SR80e
Grado The Hemp Headphone
Harman Kardon FLY ANC
HarmonicDyne Helios
HarmonicDyne Zeus
HEDDphone
Hifiman Ananda
Hifiman Arya
Hifiman Deva
Hifiman Edition X V2
Hifiman HE1000
Hifiman HE1000se
Hifiman HE400i
Hifiman HE560 V1
Hifiman HE5se
Hifiman HE6
Hifiman HE6se
Hifiman Jade II
Hifiman Shangri-La Jr
Hifiman Sundara
Hifiman Susvara
iBasso SR1
iBasso SR2
Kennerton Odin
Kennerton Thror
Klipsch Heritage HP-3
Koss KSC75
Koss Portapro
Koss PRO DJ100
Koss Pro4S
Koss SP540
LB-acoustics MYSPHERE 3.2
Logitech G PRO X
Logitech G431
Logitech G933s
Massdrop x AKG K7XX
Massdrop x Koss ESP/95X
Master & Dynamic MH40
Meze 99 Classics
Meze 99 Neo
Meze Empyrean
MrSpeakers Aeon Flow Closed
MrSpeakers Aeon Flow Open
MrSpeakers Ether C
Nectar Hive
Neumann NDH 20
Oppo PM-3
Philips SHP9500
Pioneer Monitor 10
Pioneer SE-2P
Pioneer SE-Master1
Precide ERGO 2
Quad ERA-1
RAAL-requisite SR1a
Rosson RAD-0
Sansui SS-10
Sennheiser Amperior
Sennheiser HD25
Sennheiser HD25 Plus
Sennheiser HD400S
Sennheiser HD559
Sennheiser HD560S
Sennheiser HD579
Sennheiser HD599
Sennheiser HD600
Sennheiser HD650
Sennheiser HD660S
Sennheiser HD800
Sennheiser HD800S
Sennheiser HD820
Sennheiser HE-1
Sennheiser Momentum 2.0 Wireless
Sennheiser Momentum 3 Wireless
Shure Aonic 50
Shure SRH1540
Shure SRH240A
Shure SRH440
Shure SRH840
Sony MDR-1AM2
Sony MDR-7510
Sony MDR-CD380
Sony MDR-CD900ST
Sony MDR-M1ST
Sony MDR-MA900
Sony MDR-V6
Sony MDR-Z1R
Sony MDR-Z7M2
Sony WH-1000XM4
Spirit Torino Radiante
Stax SR-007
Stax SR-009
Stax SR-009S
Stax SR-3
Stax SR-40
Stax SR-404
Stax SR-404 Limited
Stax SR-4070
Stax SR-84
Stax SR-L300
Stax SR-L300 Limited
Stax SR-L500
Stax SR-L700
Stax SR-Lambda Pro
Stax SR-X Mk2
V-MODA Crossfade 2 Wireless
V-MODA Crossfade LP2
Warwick Acoustics Sonoma Model One (M1)
Yamaha HP-300
Yamaha HP-50S
ZMF Aeolus
ZMF Atticus
ZMF Auteur
ZMF Eikon
ZMF Verite
ZMF Verite Closed