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Feature
648UA has 60 Watts x 4 Max Power, Preset Built-in EQ and Detachable FacePlays CD/USB/SD MP3 FM/AM, Smart Phones
Front panel USB, Behind Face Panel SD, Front Panel Aux Inputs and One Pair of RCA Outputs
One Pair of CK65 6.5" 2-Way Speakers
Speaker Power Handling: 250 Watt max., 125 Watt RMS with Poly Cone Woofer and Foam Surround
3 Year Platinum Dealer Warranty
Description
Boss Audio Systems 654CK 654CK In-Dash MP3 Compatible CD AM/ FM Receiver/ Speaker System (Black)
Platinum Online Dealer Warranty
3 Year Boss Audio Platinum Online Dealer Warranty When Purchased From Amazon. com
RDS Tuner
'RDS' stands for 'Radio Data System' and it allows FM broadcasters to send far more than just an analog audio signal out over the air waves. Using a 57 kHz 'subcarrier,' stations can transmit digital RDS data for reception by RDS-equipped FM tuners. Depending on what the broadcaster transmits and what your tuner can pick up, you can receive information such as the name of the artist/ song, name of the station, genre, traffic information, and more.
Switchable US & Europe Tuner Frequencies
The 648UA receiver will not only be able to pick up U. S. frequencies but it will also have the capability to pick up European frequencies. Output Power: 60 Watts x 4 Channels
Compatible With Audio Output of iPods / iPhones, Smartphones, and MP3 Players
A great feature that comes in handy is the AUX input located in front of the unit. What this does is that it allows you to connect a device that has an Auxiliary output, such as your iPhone/iPod, smartphone and MP3 player straight into the Auxiliary input of your head unit. So basically a cable that has (2) 3.5mm (male) plugs. Important: Please beware that this feature is not the same as the 'Full iPod Control'. This feature will only allow you to control your music by clicking on the designated buttons via the face or front side of your unit.
Playback
CDR/RW Audio MP3
Inputs & Outputs
USB Port SD Card Port RCA Outputs
Detachable Faceplate
The face plate detaches and you can carry it with you for safety and security.
SD Card Port
Once the face plate is removed you are able to insert an SD memory card with your favorite Audio files in it.
Output Power: 60 Watts x 4 Channels
The 654CK offers 4 channels that can be used to hook up 4 speakers. Typically though, it is a much better practice to have an amplifier running your system.