How is the accuracy, and flatness of the Custom 3 compared to the ER4S?
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Currently owned.
Headphones: Custom ER4S, HD580 w/ 650 grills & V2 SD cables, SE530, FreqShow.
Amps: iQube, Xin Supermacro IV LE, Corda Cantate
Source: 4G Imod
Previously Owned:
Headphones: E2C,HD497,PX100, ER4P, UM2, Bose in-ear, SR125, SR225, PK1, DT250-250,Triple.fi, ESW9, Hfi-780.
Amps: Total Airhead 06, Portaphile V2^2 Maxxed, X-Can V3, Gilmore Lite V2, RSA Tomahawk,Heed Canamp, Meier Arietta, Corda Move,XIN Supermicro IV Post 4/11.
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