Linsoul Kiwi Ears Allegro Portable in Ear Monitor Amplifier, USB DAC with ES9028Q2M Chip, High Resolution 32bit/384kHz, HiFi Earphone Amp for Phone/PC

I purchased this portable DAC assuming it works with iPhone.. it doesn’t! Even if you change the cable (c type to lightning). Using it with my MacBook Pro 2019 works, however; it doesn’t boost the sound much (actually the sound quality is better without it).I am not sure if this is intended solely for Android or Windows, but my feedback is that it doesn’t meet expectations.