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Sony 777ES vs Sony 7100 ES Receiver upgrade?

I currently own the monster Sony 777ES receiver. It weighs 47 pounds. I got it in 2001 priced at $1,500 MSRP. I have thouroughly enjoyed the sound. I have recently upgraded my B&W 603's to the new 703 model. These new speakers need more than the 120W X 5.1 my current receiver delivers.

My question is to anyone that knows the quality of the new ES line. I am interested in the new 7100ES. IT has 170W X7.1. Although the weight is about 15 lighter at 32 pounds. Should I be concerned with the lighter weight? Will the higher W power make a difference? I do not know if I should sell 777ES and buy 7100ES. I have found good deals on net for 7100ES and am tempted, but need feedback from anyone that can. Thanks
jwatusi

Showing 1 response by bigtee

bigtee
803 posts
 
If I remember correctly, the 777 has preamp outs. I would buy a good multi-channel power amp and add it to the receiver. They're many good amps that can be had for the cost of a new receiver.
I found the 170w of digital power (STR DA5000es) to not even sound as powerful as the older DA3es receiver.
Also, the fellow above is correct. You need an amp capable of driving 4 ohms with no trouble. Most receivers don't like this low of an impedance.
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