Paul,
Remeber efficency. That amplifier is probably only about 30% efficent or so. If it indeed draws near 8 amps to make 130 per channel. However, the 8 amp fuse may be there in the need to drive 4 ohm loads to around 200-220 watts unclipped. That being the case it would have pretty typical efficency around the 50% range for a class A/B. If not, (capable of 200-220 into 4 ohms) I would assume a Class A bias resulting in lowered efficency.
By the way, 8 amps (of current) at 12 volts only allows for 96 watts at 100% efficency. With a realistic efficency of 50% (for class A/B) it is more like 48 watts. 67 watts if it were a typical class D amplifier (usually about 70% efficent).
Sorry to be the "nitpicker".