RME ADI-2/4 Pro SE High-end Desktop USB Headphone Amp/DAC (Open Box) - Discontinued usb-c female USB DAC mode: acts as

USB DAC mode: acts as a DAC when connected to a computer/phone

the M4U TW1 features a rechargeable lithium-ion battery that provides up to five hours of listening and up to eighty hours on standby

Connector: MMCX

and so used simple but functional construction

RME ADI-2/4 Pro SE High-end Desktop USB Headphone Amp/DAC (Open Box) - Discontinued usb-c female USB DAC mode: acts asADI 2 4 Pro SE 2 AD 4 DA 768 kHz, High Performance Converter Based on many years continued feature development of the ADI 2 Pro, RME unveils the next addition to the countless award winning ADI 2 Series. The latest masterpiece comes with a newly developed circuit board, improved specs and faster DSP for an outstanding transparent sound signature, extreme power headphone amplifiers including IEM power setting, super low noise 4. 4 mm Pentaconn balanced