I'm planning to buy an RX-V2500, but I'm unsure of exactly what differs between it and the RX-V1500 internally. I know that it has a little more power, a more advanced GUI, and a rec out selector, but it doesn't seem they could be the only reasons for the price difference. When I called up Yamaha (UK) and asked what DACs the RX-V2500 has, they said they were high-quality DACs from Burr-Brown. Later I stumbled across the service manual for the RX-V1500 on the Yamaha site (they probably put it in place of the owner's manual by error), and had a look at it since I assume that the RX-V2500 is very similar. The type numbers given in the serivce manual reveals that the DACs in the RX-V1500 are fairly good quality ones from AKM. This could either mean they use different DACs in the two models, or that the information Yamaha's customer support has received is incorrect. I phoned Yamaha again today and asked if the RX-V1500 was listed as having Burr-Brown DACs as well, but whereas the RX-V2500 did, the RX-V1500 did not. That could mean the DACs in the RX-V2500 are indeed a little better (although the brand alone does not reveal that, I guess it's the intention), but it could also be erroneous. None of the official flyers or product catalogs mention Burr-Brown or Texas Instruments (who acquired Burr-Brown) for the RX-V2500, which is weird as it would have been expected that Yamaha would have used that as a selling point in justifying the price difference to the RX-V1500. That makes me suspicious. Does anyone here know what DACs are de facto used in the RX-V2500? And more importantly, does it sound that much different from the RX-V1500?