I am currently using V-Dac and V-Can for home listening. I am looking for a desktop dac/amp unit that is close or on par or maybe better than my current setup for 300$. I will be using one of them in the office. Currently using o/b sound card of my laptop. Even though my headphones are low impedance, both dac and amp quality is important for the sound output. I also don't like too small units. I am thinking of buying:
Matrix M-stage USB ( I'm sure it will be a great amp for the price, not sure about the dac performance)
Matrix Cube ( Moderate dac/amp performance I think)
It will mostly be used with Ultrasone Pro 750 and maybe Sennheiser Hd 439. It will be connected to computer via usb so usb performance is also important.
I have searched and read all threads about them. Couldn't find much about Nbf-15. All of them have strong an weak sides. Which one will be the best performer for my situation as a dac/amp combo? I am also open to any other suggestions around my price limit.