the burson has some advantages over questyle's cma600i for me. i like that it's a single ended amp design as i have no need for a balanced one, which adds complexity to the circuit. it has a smaller footprint and comes with a 5 year warranty, whereas the queststyle comes with a 12 month warranty - that's a big tick for the burson. i've also read some reports of clicking and popping noises associated with the cma600i's akm dac, which has been acknowledged by questyle, and is a bit off putting.
does anyone use their burson with low impedance cans and if so, how do you find it? its power output does look like overkill on paper for my efficient dynamics.
Thank you for the info. The clicking/popping is bit of a concern.
I own the V2+ and I'm pretty happy with it. No clicking or popping. I would like a balanced preamp and headphone amp though.