My daughter got one, it's basically a Bluetooth Receiver, a DAC and an Amplifier in one tiny cube like box. You can connect it to any regular passive HiFi speaker. Works really well, more details here -> http://www.thevamp.co.uk/
What's the sound quality like? We have a Yamaha amp for the house (will airplay/spotify connect through the internet from anywhere, which is nuts!) but this looks good for travel/the garden...
Have you seen 'The Vamp' Mr Fintan?
My daughter got one, it's basically a Bluetooth Receiver, a DAC and an Amplifier in one tiny cube like box. You can connect it to any regular passive HiFi speaker. Works really well, more details here -> http://www.thevamp.co.uk/
Cheap solution?