This is a SUPERB device. Please note NOT ALL POWER SUPPLIES ARE THE SAME. The recorder in my Roland VS 2480 is actually as good as any top pro recorder out there. yet the POWER SUPPLIES in the Roland are not that good. there O K but not as good as the RPB 486 i just purchased. I learned that a while ago and so i went with an inexpensive external supply that worked better. Yet it still was not as good as the RPB. The R P B 486 and my Studio Projects C-1 condenser mike is as good as it gets in home recording. Easily as good as top flight recording studios. Not only can i hear the difference, but i can see the difference looking at the wave form structure. More DEFINITION. As quiet as it gets i highly recommend this unit. This is a classic case. I'm teaching you in 1 minute what it took me 5 years to learn about power supplies. A true Rolls Royce for sure. Rog