XPA halves the power onto 4ohms and quarters onto 2 ohms.
It has neither powerful transformer nor good filter caps in the power supply and no room for current reserve. You should use for this amp tube-friendly and efficient speakers. Power cut-down is to prevent clipping and save your speakers.
Don't even think of hooking up XPA directly to your speakers. You may jeopardise their condition and safety.
In the best case the clipping protection circuit will block output stage completely.
XPA is cheap and popular and easy to sell and replace with larger poweramp. Good budget options you may find among digital amps that are also made in China and have better 4-ohm drive capabilities.
It has neither powerful transformer nor good filter caps in the power supply and no room for current reserve. You should use for this amp tube-friendly and efficient speakers. Power cut-down is to prevent clipping and save your speakers.
Don't even think of hooking up XPA directly to your speakers. You may jeopardise their condition and safety.
In the best case the clipping protection circuit will block output stage completely.
XPA is cheap and popular and easy to sell and replace with larger poweramp. Good budget options you may find among digital amps that are also made in China and have better 4-ohm drive capabilities.