Hi again everybody. I love my new (2nd hand) B&W XT4`s. I have the Denon DRA-700AE (80 watts RMS per channel) which to me sounds great. However, I`ve heard a more powerful amplifier would improve things. I don`t understand the technical stuff too much but have done my research. For sale is a Roksan Kandy K2 BT for 550 euros (like new I believe). At 140 watts RMS per channel would I really notice a difference? I have the possibility to listen loud which I do like sometimes, and I`ve read in the what hi fi review that the B&W`s love high volumes! Mostly classical but also lots of rock and jazz. Also at 400 euros is a Roksan Kandy K2...so no blue tooth and 20 watts less per channel. And finally do those extra watts (120 on the K2 to 140 on the K2 BT) make a real difference? PS I saw somewhere that you VLADIMIR own the K2 BT and you have helped me before. Many thanks