I'm thinking of getting a surround receiver, but have little room to put it. This means stacking it with other units. I have an NTL box which gets extremely hot (known issue), so I daren't put anything on top of that. The trouble is, the manuals for most receivers state that you shouldn't stack other components on top of them. I do remember seeing one model which could be stacked, but now I can't remember who made it. Does anyone have any thoughts about this?