Remember the days when good sound meant cavernous stand-alone speakers hooked up to heavy duty amp hardware? That may still be the choice of the hardcore audiophile, but you achieve some pretty remarkable room-filling results these days with tiny little all-in-on units. Like this new Bluetooth speaker from Porsche. Created from the twin exhaust outlets of the latest and greatest 911 GT3 model, it sports a full aluminium chassis and both Bluetooth 4.0 with apt-x highfidelity streaming support and NFC near-field capability for super-simple syncing. Additional highlights include 60-watt total system performance and battery life up to 24 hours. The whole shebang weighs in at 3.3kg and measures 290 by 155 by 120 mm. Snag yours from porsche.com for £425 inc VAT.