1. Does it record to flash drive or SD card?No, it does not. You can connect it to a computer or phone and record use any software you like.
2. Can I use it without a computer?
Sure. You do not have to use it with a computer. There are three analog outputs that can be streamed to any device.
3. Does it work on Mac?
Yes, it is compatible. It will be recognized by macOS as a playback and recording device.
4. Does it support Bluetooth?
Yes, it supports Bluetooth for accompaniment input. It does not support Bluetooth output.
5. It an App for the product?
No, there is no App that does not require a specific app to operate.