Eversolo DAC-Z8 Headphone Amp/DAC - Discontinued power accessories then this means you have

then this means you have a ground loop caused by multiple earths

Soft Magnetic Compound reduces eddy currents and hysteresis to lower uneven harmonic distortion drastically

toroidal-core power transformer constantly supplies a constant

50 oz (99 g)

FiiO R9 comes loaded with Android 10 which is upgradable to Android 12 for easy access to the latest media applications on the Play Store

Eversolo DAC-Z8 Headphone Amp/DAC - Discontinued power accessories then this means you haveES9038Pro DAC The heart of the DAC Z8, its digital to analog conversion stage, is equipped with an excellent ESS ES9038Pro chip. This ensures low distortion and noise for a truly convincing high fidelity music experience. In addition, the DAC Z8s audio circuitry is specifically calibrated to deliver its full potential. XMOS XU316 USB Interface The USB input of the DAC Z8 is combined with an XMOS XU316 interface, which can process audio data quickly