Cowon iAudio U5
nd has far more importance than the dedicated record key that is provided. On the bottom of the player is the 3.5mm headphone jack, the microphone, lanyard loop hole and below a flap are the USB port and reset button.
Performance:
The BBE Effect enhances the bass and treble. The Mach3Bass focuses on the bass, while the 3D Surround sound option adds a pseudo surround effect to the sound. The best part is that these are not just gimmicks but actually work really well. They work so well that it was hard to switch them off, but for the purpose of testing I had to listen to the standard sound. They also have 10 levels of adjustments that really let you fine-tune your sound instead of throwing some preset sound at you. Then there is also the 5-band equalizer and the MP Enhance function which tries to compensate for the lost detail in compressed music, although most of the time all that you'll hear is a slight increase in volume.
The U5 has a 32+32 mW amplifier that is really powerful for a portable music player. The U5 had no problem running even my big headphones flawlessly, as it did with the small earphones. No mater which headphones you connect you can be sure the U5 will be able to power them. The supplied earphones however were very mediocre and should ideally be replaced with something better.
The FM radio has good sound quality too. However, the JetEffects are not available for the FM radio. The sensitivity was average though and indoors the player sometimes won't pick up radio waves. The FM broadcasts can be recorded as well. There is also a voice recorder which uses the built-in microphone. The recording quality was pretty good. You also get the option to select the quality of the recorded audio. You can adjust the audio bitrate and the mic sensitivity.
The data transfer speed is pretty decent. Transferring 100 MB of data took one minute and 33 seconds. As for the battery life, Cowon claims to last 25 hours but I only managed to get 14 hours while listening at moderate volumes with some playing around in the UI and all settings at the default levels.