It is almost the perfect product for on the road. But I would have liked that it had some extra options to use your iPhone or iPad as amp on the road. At this moment I cannot charge my iphone or hear anything when using it because the lightning port is in use and the iPhone is thinking that there are headphones connected.
First, make it USB-C only and add an USB-C to USB-A adapter and a USB-C to lightning adapter in the box. Second, an audio 3,5mm headphone jack on the side of the USB plug. (Bluetooth Headphones have to much latency for Guitar). Third, A charging port USB-C on the side of the USB plug. Most devices go to USB-C in the near future. My Apple iPad pro even already has USB-C.