Toshiba Japan today unveiled the Gigabeat G21 1.8-inch 20GB HDD based MP3 player. The G21 features a 28 spectrum digital equalizer for the extreme audiophile. Being the thinnest 20GB MP3 player in the world, the G21 is also easy to update, simply plug it into your network and your PC can access the player’s shared hard-drive.

The G21 will come in black and silver and cost around $450 USD. Unfortunatly this device is only targeted to the Japanese market.