> * Q1: I assume that, if instead of the jack, you use a usb-c audio adapter accessory mode, there should be no extra latency either, right? (I'm using late pix

> * Q1: I assume that, if instead of the jack, you use a usb-c audio adapter accessory mode, there should be no extra latency either, right? (I'm using late pixel phones) That's correct, by using either the 3.5mm jack, or USB-C adapter you won't incur any additional latency introduced by DSP to improve the speaker acoustics. However, the USB path typically does have a few ms higher latency than the 3.5mm jack path. > * Q2: which device are you using for the USB-MIDI input? We've used a variety of devices and found the latency differences to be negligible. At the moment I test with an old AKAI LPK25.