I added some external amps to my 3808. I do not have a golden ear like some of the fanatics out there, but I think I can detect differences with reason and rational thought verses an emotional response. The amps did nothing for improving, or degrading sound quality, per say. Where I did notice an improvement, is with dynamic range at reference level. Having said that, I would not recommend anyone spend the money on amps with this particular AVR. I think you could spend that money elsewhere to improve quality of life (like a kegerator).
