





A review of technology, current and future.






I'm a big fan of Bluetooth technology. When I see a good value on something I can use I find it hard to resist. There is not much to say about this little Bluetooth adapter except that it works well, is inexpensive, and will eliminate the wires from your iPod. Apple doesn't seem to know the value of Bluetooth, but fortunately a small investment will overcome that shortfall.
The wiREVO A100 is small, but is a holdover from earlier iPod design trends. It works just fine with my iPod Touch and Nano, but isn't the most stylish compliment to either. At 3/8" thick by 1.o625" by 1.5625" and only 12 grams in weight, you'll notice but not feel much addition to your iPod.
The A100 has it's own lithium battery and will charge from your iPod cable. You can charge it alone or charge both the iPod and A100 at the same time.
Pairing is easy. The first time it is plugged into an iPod it will go immediately into pairing mode with it's led flashing blue and red. I had a little more trouble pairing it a second time to a different device, but it just took more careful timing. Once connected your Bluetooth headset will have control over the iPod. You can toggle between Play and Pause, and also go forward or backward one track at a time. Your headset will have volume control as well. Instructions are complete and easy to understand. It was well packaged.
I never quite understood why you needed a separate amplifier for your MP3 player or cell phone's headphones. Yet when I saw this FiiO E5 amp and it was only $23 I figured I could take a chance and see what I was missing. The E5 came with a short 3.5mm to 3.5mm patch cable, a longer 3.5mm to 3.5mm patch cable, a USB charging cable, and a simple user manual.
You can't get much simpler than the design of the E5. One end has a jack for your headphones, a volume control rocker, Power button, and a slide switch to turn on and off the Bass Boost EQ. There is also a small LED status light.
The opposite end has an input jack and the USB port for charging.
It's very small. It weighs only 23 grams (.8 ounce). At 1.5" x 1.75" and a tiny bit more than 7/16" thick the E5 is smaller than most MP3 players. Here it is with my Sansa Clip.
My iPod Nano dwarfs the E5.
Just like the Clip and the iPod Shuffle, the E5 has a built-in metal spring clip to help keep it attached to you.
Specifications include:· Output Power: 150mW (16 ohms loaded) or 16mW (300 ohms loaded).
· Signal to Noise Ratio: ≥95dB (A Weight)
· Distortion: <0.009%>
· Frequency Response: 10Hz ~ 100KHz
· Suitable Headphone Impedance: 16ohm ~ 300ohm
· Power Supply: Built-in Rechargeable Li-ion Battery
What is the best excuse for one of these small amplifiers? Your Mp3 player can probably crank up loud enough to do serious hearing damage, but most will start to distort the audio at higher output levels. By keeping the player at it's optimum distortion-free volume setting you can bring the audio up to a full, rich, non-distorted level. The E5 excels at this. I didn't realize how much distortion I was hearing from my players until I passed the audio through the E5. Very crisp, full sound. It warms up my music no matter which player I'm using it with. It brings out the detail with no perceivable noise. There is obviously some noise filtering taking place. It sure sounds so anyway. Static I might have heard using headphones directly from the player is missing when passed through the E5. You can also use higher quality headphones with your player. The more professional headphones require a bit more power to fill up with sound. Low powered players designed for simple earbuds benefit greatly with some amplification on the way to a quality headset.
Value? Amazing. I can think of no better investment to improve your listening experience. The E5 does a remarkable job bringing your audio to your ears. It's also very portable. The only warning I'll extend is to keep an eye on it. The petite E5 is easy to lose sight of.
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I've had a chance to try out the bluetooth on both Samsungs, the Philips, Insignia, Cowon, and Iriver. The Iriver SPINN and Cowon S9 are both relatively new, and when using bluetooth on both I've run into a few problems with the devices running slow or choppy, or causing the music to skip or breakup. They also have difficulty seeing standalone bluetooth speakers. Each has gotten better with recent firmware updates, and I have faith they'll both get the bugs worked out eventually. The Philips is reliable, and even sends FM radio over bluetooth which is something no other player seems capable of handling. The Philips also adds the ability to send files to other devices once connected. I've tested this with the Samsung P2, and was able to send a music file from the Philips to it, as well as send a file back to the Philips from the Samsung. Bluetooth file transfer is not terribly fast, but will get the job done. The Philips also worked with the Samsung T10 and my Samsung Instinct phone.
All of the players I've tried sound great when their audio is sent over bluetooth to a decent receiver. There are several over-ear headsets out there in the $50 to $100 range. With relatively small driver, you'll miss the lower frequencies and this may contribute to Bluetooth's poor reputation for stereo audio transmission. With better quality bluetooth headphones my experience matches that of wired connections to good headphones.
Some headsets to consider are: The Sony DR-BT50, The JBL Reference Series 610, and Motorola S805. With most Bluetooth headphones/headsets you can also pair with with a cell phone and use hands-free for sending and receiving calls. The Samsung P2 and T10 can also be paired with bluetooth cell phones and be used to send and receive calls, pausing their music automatically when a call come in.
The Insignia Pilot appears to be out of production, but it represents a great value if you can find one. Bluetooth works great on it, and it pairs easily with all compatible products I've tested.
Summary: If you're tired of the wires, Bluetooth has matured into a great way to get rid of them. The Samsung Players lead the pack, with Cell phone pairing, file transfer, and even device-to-device game play over bluetooth. Philips comes in second. Philips also makes several other great Bluetooth accessories, and appear to be aggressively working to put bluetooth in even more. The Insignia does a great job, but limits it to stereo audio. The same is true of the Cowon and Iriver players, but I'll reserve final judgement on them until their firmwares evolve some more.
I've mentioned Bluetooth in several posts. For me it's a killer application, making portable media players with bluetooth profoundly more user friendly, versatile, and enjoyable than what came before.
Some previous posts relating to Bluetooth. Enjoy!
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