Power variability table for BT20A (non-pro version)

[vegea8]

Fosi provides a power variability table for the BT20A Pro amplifier in the product page, but nothing similar on the regular BT20A one. Only max peak power is provided for 4ohm speakers at 24V. But I need to know variability of nominal music power I can get from it for various voltages and currents between the range marked in the rear (12-24V).

This is the table provided for the BT20A Pro.