No EQ.
IEMs: 7hz: Dioko, Legato, Zero, Zero 2. BQEYZ: Spring 2, Wind. Campfire Audio: Holocene, Mammoth. CCA: C10, CRA, CRA+, FLA, HM20, Lyra, Pianist, Polaris, Rhapsody, Trio. KZ: AS16 Pro, BA10, Castor Bass, D-fi, EDX PRO, EDX PRO X, ESX, Krila, PR1 Pro, PR2 v1, PR3, ZAT, ZES, ZS4, ZS5 v1, ZS5 v2, ZS6, ZS7, ZS10, ZS10 Pro X, ZS10 pro, ZVX. Kiwi Ears: Cadenza, Quintet. Moondrop Chu, Kato, Variations, May, Dusk. Thieaudio Legacy 2, Hype 2. Truthear Hexa, Hola, Nova, Zero, Zero Red.
Other brands: Aurian Ocean, Blon Z300, CVJ Konoka, FiiO JH3, QKZ HBB, Tanchjim Ola Bass,Tangzu Wan Er, Tinhifi t3+, Tripowin Mele, TRN V80, Penon Fan 2, Celest Plutus Beast, Hidizs MP145, Simgot EA500LM, Dunu SA6 mk2, Letshuoer Cadenza 4. Earbuds: NiceHCK eb2s pro.
Bluetooth: Huawei Freebuds 5i, Samsung Galaxy Buds2 Pro, Moondrop Space Travel, 1More Sonoflow, Philips SHB3175, KZ AZ09 Pro, TRN bt20xs.
Headphones: Sony MDR1A, Philips SHP9500, Philips SHG8050/00, HiFiMan HE400SE. AMPs/DAPs: Truthear Shio, Fiio K3, Hidizs AP80 Pro X, Sony NWZ A17. Speakers: Edifier MR4