I am still without an A1400, still too much money for me, this is where I started seriously looking at the pro amps out there and have liked what I have read about them and their price points.
"Owners of popular 4 ohm loudspeakers (dual-woofer, two-way models and many subwoofers) will find the 700 watt (4 ohm) power of the GX5 an ideal match." $400