Quiet
Quality is good, but the volume of your voice will be kind of quiet to whoever you are calling.

CD-BTB200 The best Bluetooth Car Adapter by far!!
I have the CD-BTB200 linked to my AVH-P7800DVD in a Expedition with a sound system. All passengers in the car can be heard clearly (so watch you say). Most people who complain about this product doesn't know how to pair it their phone properly. I have a HTC 8525 and a Treo 650 with JetWare mobile software and all functions are available(Direct dial, voice dial, all phone book options). In regards to the phone book, you must send or beam your phone book entries to your unit.

This is a must have, especially if you spend a lot of time in your vehicle

It Works!
Had the unit installled with the Pioneer Avic D3 and it worked like a charm. Caller ID, call waiting and all other features work as promised.

Pioneer Bluetooth Wireless Adapter
Generally speaking this product does what it's supposed to do: provide you with handsfree capability through your compatible Pioneer head unit. It provides clear and crisp sound, and works with most bluetooth enabled cell phones. There is however, one small, minor problem (depending upon your level of tolerance and expectation): some phones are not compatible with the phone book transfer feature of the unit. After numerous hours of searching the web, it still isn't clear why any of my bluetooth enabled phones aren't compatible with this feature. So a word of caution, if you're looking to take advantage of all the features this product offers, make sure you do a thorough search on the web to see if your phone is compatible, otherwise you may find yourself utterly disappointed. Other than that, this is a great accessory to my Pioneer AVIC-D3.

Pioneer Bluetooth Adapter
i paired this unit with a Pioneer AVIC-D3 NAV HEAD UNIT. My cell phone carrier is Verizon. Once a cell phone is paired it then must be registered in order to maintain the pairing. Could not get the phonebook download to work with my phone. Overall unit works good with direct dial or stored numbers or when answering incoming calls. Not as smooth as factory installed voice recognition units in newer cars.