Match Box Media Player. The Perfect Gift, Crystal Acoustics MM-BOX-US Ultimate Performance Portable Media. The only one with Realtek 1055 chipset and HD Audio, in credit card size Powerful Realtek 1055 Chipset 5.1 HD Digital Multichannel Audio. HD video up to 1080p through HDMI BD/DVD ISO, .mkv, .divx, .wmv, .flac, .mp3 playback 5.1 DTS/AC3 to stereo downconversion Multilingual menu and subtitle support