The compact Proporta Mobile Device Charger is ideal for adding extra power to your MP3 player, smartphone or PDA. Charged using your laptop via USB, five LED lights identify how much power it contains - up to a maximum of 1700mAh.

It's no secret that the video processing built into most displays is a compromise, dictated by pricing. In this competitive marketplace, manufacturers will shave off as much cost as possible and advanced video processing is often the first to go

Although popular in other countries, monoblock LNBs haven't been adopted with such enthusiasm in the UK. A monoblock LNB provides two feedhorns, two LNBs and a DiSEqC switch all in one package

Based in Hungary, Heed produces a nice line of products with a distinct slant towards the world of vinyl disc replay. The Questar is the basic phono stage of the range and is available in high gain (moving coil) and low gain (moving magnet) versions, each having specifically designed circuitry entirely based on discrete transistors.

The original Harmony took the idea of 'macros' - sequences of commands for several devices - and developed it into an 'activity-based' remote control, where helpful software lets you configure the remote to do several tasks with one button-press.

The default picture modes of your display often give results that may look acceptable in a brightly lit showroom, but leave a lot to be desired as far as home viewing is concerned. But it is possible to achieve a much better picture through calibration

For those of us with the luxury of two or more HD Ready displays (screen and projector), connectivity can be perplexing. No home cinema receiver, set-top box or disc player has more than one HDMI output, so you're forced to use component video for one of the displays, or cable-swap.

One of the most annoying traits of the TV world in recent times has been the way sets are all falling over themselves to offer high definition handling, but then only provide a paltry amount of HDMI connections

Upscaling standard definition video is all the rage at the moment as we attempt to squeeze more quality out of our DVDs and other sources while waiting for high definition discs to really take off

The damage that can be wrought on a sound system by poor mains shouldnot be underestimated. But, like so many of those 'intangibles' in audio (cables being the most obvious example)...

The big attraction of the SLx is its size. Barely bigger than a Scart plug, the SLx transmitter and receiver units plug directly into the back of the source equipment and the secondary TV, respectively.

If you install satellite dishes on a regular basis, you'll require a measuring instrument more sophisticated than a simple signal strength meter. Telemann's 1650 is a complete digital satellite receiver, minus the video/audio decoder.