The A1400 has been reported to have a very high failure rate by users at AVS Forum:

http://www.avsforum.com/avs-vb/showthread.php?t=921415

Audioholics review unit also caught fire during test and their second review unit blew two channels during test.

http://www.audioholics.com/reviews/amplifiers/axiom-audio-a1400-8

I honestly don't understand how they rated an amp that blew up twice so high.

Axiom taking this amp off their site can only mean one thing, the reported failure rate is so high that they had to discontinue the product.