Administered by:
@waldi @lanodan @steph @mia @ShadowJonathan
That really depends on the flavour of passive or active audio throughput and the phone manufacturer. I've got a blackview phone with passive audio output (DAC on phone) that works well with their own headphones but the passive adaptors I've tried failed (there's no agreed standard). If I use an active adaptor the signal to noise ratio at low volumes is terrible and the USB output gets shut off after 15 minutes bacause the phone thinks it's inactive.