Could it be a signal clipping issue?

Could be worth trying another source to prove the DSP5200 are ok?

Regards
David

G65, 210, HD621, DSP5200.2, DSP3300C, DSP3200,

NUC 7i5 Roon Core, Apple TV 4K, Blustream SW41AB-V2, Panasonic TX55fx802, EE8 switch

Multiroom - Ms200, Nile’s ZR4
Bedroom - 251