Hi, selling my E1DA PowerDac v2.1 Digital Amplifier.
Very unique amplifier that's fully digital (i.e. no analogue amplification and no feedback). Super powerful, so I recommend that you only use it with Headphones or with an impedance adapter for IEMs.
It works with the HPToy app and supports Balanced output, Unbalanced Output (ONLY with the official 2.5 to 3.5 adapter) Parametric EQ, Bass/Treble Sliders, Compressor.
It uses USB B and 2.5 output, but I have the official USB B to USB C adapter, 2.5 to 4.4 adapter, and 2.5 to 3.5 adapter (included in the price).