An inexpensive amp/preamp/integrated for Zu bookshelf speakers


I am thinking about a small stereo system for my office and am looking at Zu bookshelf speakers. 
Since they are so efficient, I only need a small amp/integrated amp. What would you consider?
The Schiit Ragnarok looks promising at $1700. (I have the Bifrost DAC on my main system and love it).
I'll probably connect it to my PC and stream music.
gdnrbob
Thanks Joekapahulu, I was considering the Schiit Ragnarok (see OP).
I think it will be the most cost effective way, too.
I have a Bifrost Multibit that I really like. In fact, I haven't played a CD for months.
In answer to your post above, the Line Magnetic 211ia is $1750 and the 216ia is $1950...... as current retail prices for them in the US (are you outside the US?).
Goldprintaudio, I am in the US. Do you have or have listened to the Line Magnetic? I am not a tube guy, but am open to new stuff.