http://www.tesystems.com/am-radio.htmTE 1454 is good for around 500 watts. The amp needs about 45 or 50 amps. i run mine with an Astron 70 A. That gives me the 70 watts of drive for the 910H and the current for the amp. And if you key the 910h at full output (100 watts)by accident, you won't blow the amp, it can take it.Occasionally it is fine, but that is getting the transistors close to saturation. You can get an amp that takes lower drive with a preamp. But the 1454 has too high a drive for a preamp. I use the Icom outboard preamp between the rig and the amp. Don't have to worry about relays or sequencers that way. Not as effective as mast mounting I know, but it does help. Plus you can turn the receive up on the 910H as well.
http://www.kb2ljj.com/data/icom/ic-910.htm