The POS receiver I'd been using on the patio has given up the ghost. All I ever use it for is to connect an iPhone or iPod so another receiver would be a waste. So I decided to try something a little different and got the little class D Dayton. The photos on the PE website are misleading. The amp itself is exactly the size I thought it'd be but the power supply is bigger then the amp. It's bigger than the power supply for my laptop.The 50 wpc is plenty to drive my patio speakers to party levels. The size makes it a breeze to bring outside and put away. I'll admit that a big reason why the receiver failed is that it was left outside on more than one occasion. I like that it has a gain knob on the front. I have't tried it yet but, but there is a headphone jack on the front as well.