This uses two ZKit 4's; balanced in/balanced out. It's powered by two separate tube regulated power supplies as recommended on the ZKit 4 page.

It's fed directly from the four DAC chips in a Schiit Audio Gungnir, bypassing  the stock output stage.





Power supply:

It's actually been together in several configurations, and this is the one that I've settled on. I'm running a matched pair of NOS Mullard CV4003's that I picked up a few years ago from Upscale.

I'm running a Schiit Gungnir DAC straight from the DAC chips into this, then to a B-to-SE converter using Cinemag transformers, then into my SE84 25 clone headphone amp. I can confidently say that this is my last system. I've heard none better. (Drops mic)