Jamo has released a bevy of sleek black AV units, with its 5.1-channel DVD receiver — the DMR 70 — first on the menu. Offering 5 x 65W power, plus Dolby Digital, DTS 5.1, and Dolby Pro-Logic II decoding, upscaling of DVDs to either 720p or 1080i HD resolution via its HDMI output, plus support for DivX, WMA, SVCD, MP3 and JPEG formats, it’s no pushover. It’s sleek too, measuring just 55mm high, thanks to its Class D amplification system that allows component sizes to be reduced…