Hi - I don't know anything about upgrading car stereos, so I could use some advice. I'm thinking of buying a Dual XHD6425 from Crutchfield as a way to add AUX-in, USB, and HD capability. After rebate and coupon code it comes out to around $50.

The part I'm mainly worried about is "17 watts RMS CEA-2006/50 peak x 4 channels". How does this compare with the Shaker 500 stereo I have installed now? Am I going to be under powering my speakers? I'm not interested in a high-end system; I just want to add the AUX-in, USB, and HD features without any downgrade on sound quality. Is the Dual a good way to go?

By the way, if anyone else is interested in this deal, here's the thread at FatWallet. Seems like the unit has great reviews over at Amazon.
http://www.fatwallet.com/forums/hot-deals/843059/
http://www.crutchfield.com/App/Produ...HD6425&tp=5684

• General features
• CD receiver with built-in amplifier (17 watts RMS CEA-2006/50 peak x 4 channels)
• plays CDs, CD-Rs, and CD-RWs, including discs loaded with MP3 and WMA music files
• HD Radio tuner built in, receives multicasting content (where available)
• detachable face
• remote control
• Audio features
• 5 preset EQ settings
• Expandability
• compatible with Dual Bluetooth adapter
• inputs: front-panel USB and auxiliary inputs (USB input not compatible with iPodŽ)
• outputs: two sets of preamp outputs
• Other info
• warranty: 1 year
• Want more peace of mind? Extended Service Plans Available