Other Common Features:
	HDMI: Perhaps the most important feature to look for in recent times is HDMI compatibility. HDMI is the only way to transmit copy protected high definition audio & video signals.  Be cautious when choosing equipment though, there is a multitude of different specifications & features for HDMI & choosing inappropriate equipment can mean you do not benefit from the improved audio video performance offered.  We wil cover variations in the HDMI standard later in our guide to HDMI connections.
	Made for iPod: With iPod being such a huge success, it is difficult to find an audio product without iPod support.  Whether via a dock, an umbilical cable or a USB lead, most AV amplifiers have some support for iPod.  However, with apple continuously developing & changing the iPod you may be dissappointed with the results.  What will work is the audio with remote control & on screen track selection, what may not work is on screen photo & video output & battery charging.  for this reason we allways recommend you bring your iPod in to check compatibility before purchasing.
	USB: With USB storage becoming ever cheaper, it is fast becoming the product of convenience for file storage.  Many Audio-Visual components across the board are now offering USB features.  Televisions will support photo playback, amplifiers support audio playback & DVD / BluRay players support photo, audio & video playback. If you are looking for an iPod connection then be cautious, iPods have their data files hidden & will not work via USB unles specifically stated on the host product.
	DLNA & Networking: With home networking being increasingly common, many upmarket products are starting to feature network receivers.  The easiest & most recent standard to look for is DLNA.  DLNA products can be connected to Windows Media Player 11 or higher without any extra software & will stream audio, photo & video data from you PC along with Internet radio via Broadband.