Aiyima B01 amplifier shuts down

[Y&H]

When driving my brand new B01 with an 8‑ohm load, the amplifier shuts down as soon as the sine wave begins to clip with a sharp angle. The oscilloscope shows spikes at the clipping onset, and the protection circuit immediately shuts the amplifier down. No properly designed amplifier should power off simply because of initial clipping. In addition, the amplifier also shuts down after some time at low listening levels, with no clipping at all. My other Class D amplifier (ZK board with the same TPA3116) operates continuously for days without any shutdown. This indicates an internal problem: unstable power stage, overly sensitive protection, or unstable power supply. The amplifier is defective. I use a power supply for 24V/6.25A. Speakers: R/L 8 ohm, Sub 4 ohm. Has anyone had this problem?