On-time power amplifier impedance of Music Fax 2 should be quite large, which should reach more than 12. A22, the output power is 5W x2, don't push the floor speakers with more than 1W, otherwise the bass will be poor, the dynamics will be insufficient, and the strength will be insufficient! For floor speakers over 1 watts, you need to buy Tianyi Class A power amplifier, AD-86SE, which can output 12 watts X2 with 8 euros, and can push 5-2 watts of floor speakers (2 watts is the maximum power, and the rated power is 1 watts, so it can be pushed completely).