Kiats
Headphoneus Supremus
One thing I do really enjoy about the M30 is that it is not just a great sounding piece of audio gear, it also has such flexibility in its connectivity options. Currently listening to my Stax SR007Mk2: streaming QQ Music via the M30 (SRC>384KHz, tube output), balanced out to the Mjolnir Carbon. I get to enjoy the luscious tube sound of the M30 on my electrostatic set up while not losing the driving power of the Carbon. The M30 just keeps on giving.