I just got one today, a refurbed one, and I must say they are easy to use, sound excellent, and the price of $69 for 16GB expandable by another 32 more....deal of the month for me, maybe the year.  

I own the first version and loved it but MK2 blows that unit away. Deeper, richer bass thats tight and well defined. Amazing how good it sounds, if I paid 2K for an amp and you gave me this unit for that 2K I'd be a happy, happy camper!!! This is a no brainer especially if your on a budget, its a special unit and your chance to get one is now before the race is on. I was given this as a gift and what a gift!!!!!

This is my first tube amp, I bought it for headphone use but hooked up some JBL's and I'm loving the sound. Great value!!!!

These cans are fun!! Flatout FUN to listen to!!

This unit has such versatility its incredible. I use it as a DAC, a pre-amp, a tube buffer, its a Swiss army knif of DACs. With its tube flavor-a single 5670- this DAC can be tailored to your individual sound preferences. The $200 price ws easily the best investment I've made in HiFi equipment and Grant Fidelity is second to none in customer service. This unit offers incredible value.