The iPod touch is slimmer and lighter than the iPhone, but doesn't have the ability to be a phone. The iPod Touch also doesn't have a camera, microphone, or a GPS receiver like the iPhone does. In all other respects it is identical to the iPhone, and you should have no problem getting directions and finding places to eat as long as you're connected to the internet.

I not aware of a Yamaha speaker model NA-A327, but they did produce a speaker model NS-A327 which has since been discontinued. We don't have any Yamaha speakers model NS-A327 for sale, but you might be able to find a replacement used somewhere. I hope this helps!

There are no true wireless home theater systems. The reason for this is your speakers need a certain amount of power (Watts) to be able to produce sound, and a wireless signal doesn't have near enough strength to be able to power even the weakest speakers.

What are available for purchase are wireless rear speaker kits, which are basically a transmitter and a receiver/amplifier. The transmitter plugs into your two rear speaker channels on you receiver, and then transmits the signals from those channels to the rear speakers receiver/amplifier. The rear speakers are connected to the receiver/amplifier with speaker wire, and the receiver/amplifier is connected to an AC outlet with the power cord. Obviously there are some cords involved, but these systems will get around running speaker wire from your receiver to your rear speakers.

We sell two of these systems, and one should work with any home theater system which you can see here: http://www.bestbuy.com/site/olspage.... The other kit is a proprietary kit for Bose home theater systems, and you can see that kit here: http://www.bestbuy.com/site/olspage.... I hope this helps!

You could bring it to your local Best Buy® store and they should be able to send your amplifier out to be serviced.