The BST900W is a mid-range multifunction device (assumed: stereo amplifier / wireless speaker / home audio component). This manual-style feature covers key specs, setup, controls, daily operation, troubleshooting, maintenance, and tips to get the best performance. Assumptions made for unknown specifics are labelled so you can map them to your exact model.
A: Yes. The manual confirms "pass-through" charging is allowed. However, note that total output wattage may be reduced by 20% when input AC is connected. bst900w manual
If none of these options work, I can try to help you find an alternative solution. Can you please tell me a bit more about what you need from the manual? Are you trying to troubleshoot an issue or learn how to use the amplifier? The BST900W is a mid-range multifunction device (assumed: