1. BTR13 Manual, Download, Feedback Summary

Quick start guide download link: Click here

FiiO USB DAC driver download: Driver-free, no need to download drivers

PC web version PEQ control link: Click here

Notes:

Only supports web control on Windows and macOS systems; (Anrdoid system and iOS system are not supported)

You need to use a browser that supports Web HID API, such as Chrome, Edge, Opera, etc., to control normally.