Dimensions: 20’ × 20’ Large
I think it sounds great - very warm. Admittedly, I don't have too much to compare it to.
Before the Yamaha, I had a mid-70's Pioneer SX-434 receiver. I've liked the Yamaha better. But the Pioneer's sound became progressively worse from the time I bought it (I think the capacitors were going bad), so it's possible that it's sound had already diminished significantly when I first purchased it.