I had the Soloist 2 amp in my headphone set up for 6 years, and I absolutely loved it and continue to use it in my bedroom. I read about the Burson Soloist 3XP and decided that I liked the flexibility of that system, which seems easily integrated into any larger system. I also have several headphones and types of headphones, and although none of these are power hungry monsters, the Sennheiser 600 and M570 both like the 3xp even more than the soloist. I also got the supercharger, which has yet to arrive but is reviewed well. I opted for a second Burson product because my soloist has worked flawlessly since I received it several years ago. I like the form factor of your products- the reliability, and not least the sound and performance with my headphones. I bought the Burson 3XP at HiFi Heaven, out of Wisconsin. They were excellent- delivering on time and as promised!