Pros and Cons:
- Fast USB 2.0 file transfer support
- Solid design
- Embedded charger
- Generic, useless headphones
- Bluetooth sound quality on other persons end
- Looseness of cables hooking to USB/power input
Form Factor:
Button layout was logical, with three control buttons on each side of the GB4000. There is also a five way joystick next to the LCD for control and menu navigation. A tiny built-in microphone exists as well.
Internally, the rechargeable Li-ion battery is stick of gum size and just below it is an expansion card slot. This is all protected by a durable, plastic shell which is comfortable to grip, very light weight and looks good.
Features:
While it was disappointing to find the player only supported MP3 files, this was tempered by id tag support for song and artist name displays on the LCD. Boosts in music sound quality are available via a five preset/one user defined multi-level equalizer. File transfer is done through USB 2.0, though with wireless Bluetooth built-in it is strange why this was not an option as well.
Speaking of Bluetooth, the main use for this comes in syncing your GB4000 (this option is not available in other Diva Gems) with your cell phone to act as a wireless headset. Once done, you can be listening to tunes through headphones and when a call comes in on your phone, a beep interrupts your music. You can hit the joystick to take the call and talk through the highly sensitive microphone.
Other notable features include a power saving sleep mode, a 20-preset FM tuner and recorder, a voice operated recorder, USB file storage, support of play lists and viewable display of file folders through the LCD.
Functionality:
As for the highly touted Bluetooth cell phone integration, the results were typical of this type of wireless connection: good sound on your end, not so good on the other persons. The beep through and interruption of the music worked as advertised, hearing the caller through the headphones was no problem and the microphone did a great job of picking up its owners voice. On the listeners side however, it sounded like a weak AM broadcast at times, complete with echoes and some crackling.



