hd amplifier :

Blu-ray: the complete guide to everything you need to know about Blu ...
You don"t need a Full HD screen to reap the benefits of Blu-ray. ... then you"ll need an HD audio-capable amplifier with HDMI v1.3 input to handle the decoding. ...
www.hdtvtop.info/blu-ray/news_2008-05-30-21-38-11-206.html