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DigiDock AC-2220 FM Transmitter Review
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DigiDock AC-2220 FM Transmitter

The DigiDock AC-2220 is certainly a very interesting gadget. It is basically an FM transmitter that allows you to transmit audio signals from a variety of sources to your car stereo via FM radio signals. This is especially great for those who do not own a CD player or one that supports MP3 playback.

If you already have a portable media player like the Apple iPod or Creative MuVo, then all you need to do is plug the provided audio cable and you are good to go! Otherwise, you can plug in any USB flash memory drive and the AC-2220 will play the audio files stored in it.

But that's not all you can do with it. If you are a little creative, you can actually use it to communicate with people in other cars! Of course, the short range and limited number of supported frequencies won't make that easy.

For now, there's really no need to go into all that exotic stuff. You will probably just be happy to have the DigiDock AC-2220 work as advertised. And we are happy to report that it does work as advertised.

We had been testing the DigiDock AC-2220 for the last few weeks and we are quite pleased with its performance. It handled all the MP3 files we fed it and could even transmit the music for quite a distance. If you are in a convoy of cars, your friends will be able to pick up the transmission and enjoy the same music.

However, we feel that it should also come with WMA support. Support for WMA is really a minimum these days and we don't think it will cost DigiDock much to integrate it into the AC-2220. In addition, an automatic volume leveler would be a great feature for them to add.

To summarize, the DigiDock AC-2220 is a nice little gadget for those who do not have a CD player in the car, or one that supports MP3 playback. It adds MP3 playback capability without much cost or hassle. Just plug it in and tune your FM player to the same frequency, and you are good to go!

For more details, read our Comprehensive Review!


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Comprehensive Review

Supported Audio Formats

• MP3

Supported Bitrates

• 32 kbps to 320 kbps

Supported File Systems

• FAT16
• FAT32

USB Support

• USB 1.1 only

FM Channels

• 6 channels total
• 88.5, 88.7, 88.9 MHz
• 107.5, 107.7, 107.9 MHz

Operating Temperature

• 0 °C to 60 °C

Storage Temperature

• -10 °C to 70 °C

Power Input

• DC +12 V (car cigar lighter socket)

Power Output

• +5 V, 700 mA max.


• 40 mm wide
• 147 mm tall
• 26 mm thick


• 75 g

Package Contents

• One DigiDock AC-2220 FM Transmitter
• One DigiDock AC-2220 manual
• One DigiDock brochure
• One USB adaptor (for iPod)


* Our New Review System

ARP is committed to developing new ways to improve your experience with us. As part of our continuous efforts to improve the value of our reviews to you, we are implementing a new review system.

This new review system is designed to allow you to quickly receive information on the latest hardware. This new system also allows you to quickly get the gist of the review without reading through it. This can be very useful, especially in situations where you need to make a quick purchase decision.

In this new system, we start with a Product Overview whenever a company sends us a press release about their latest product. We shift through extraneous PR-talk to create a straightforward summary of the product's features as well as its specifications. This allows you to quickly find out all the pertinent details about the product, without reading through official press releases.

When we receive the product for review, we will quickly take photos of it and create a Pictorial Review. The purpose of a pictorial review is to allow you, the reader, to quickly examine the product visually. It may help you make better purchase decisions, especially if you cannot wait for the full review.

After thorough testing, we will post a Comprehensive Review of the product. This adds on to the pictorial review with comprehensive test results and our final conclusion on the product.

But no matter whether you are reading a Pictorial Review or a Comprehensive Review, you can always read the summary of the review as well as examine the product's specifications right on the first page. In all our new reviews, we will maintain the first page as a Product Overview page. If the product is listed in PriceGrabber, you can also check out the lowest price online.

We hope this new review system will make your experience a lot more enjoyable and informative!


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