Lots of detail, great imaging, not much bass?

All the stars are aligned with your electronics for you to just pick the speakers you want, we just had a shoot out yesterday at our monthly Ason audio society meeting of a hand full of small book shelf speaker from $400 to $4.5k and the Silverline Minuets came out on top, judged by a around 25 people, all so called audiophiles. I was surprised just how full bodied they were for the size.
The sensitivity 2.1v of your Z dac is a great match for your Lightspeed Attenuator and the Classe's input impedance 75kohm and sensitivity of 1.5v so you will have an abundance of spare gain, it is also a great match for the Z dac and Lightspeed combined.

Cheers George

I just got back from the Newport Audio show and if you can stretch your budget another $100, there was the Martin Logan Motion 15 that made more than adequate bass and sounded pretty good for a monitor. Actually more than pretty good. I don't know how it would sound in the long run but if you can audition it, it might be worth it.

The sound attracted my from out in the hall and at first I thought it was their electrostatic panel speaker with the built in sub playing.

All the best,
Nonoise

Magnepan MMG!

$500, money back guarantee with return, purchase direct from manufacturer!

Will not disturb people next door! Plenty of detail, imaging, and great midrange.

A no brainer choice!

Tekton should be on your list to consider.

06-02-13: Nonoise
I just got back from the Newport Audio show and if you can stretch your budget another $100, there was the Martin Logan Motion 15 that made more than adequate bass and sounded pretty good for a monitor. Actually more than pretty good. ...

The sound attracted my from out in the hall and at first I thought it was their electrostatic panel speaker with the built in sub playing.

The Martin Logan Motion series uses the same type of folded ribbon tweeter as the GoldenEar products. This is a very extended and natural sounding HF transducer, and works well in both products. Emotiva also uses them in their powered monitor Pro series, but since you have a Classe amp, I didn't mention them. Point being that this 21st century realization of the Heil air motion transformer is gaining some traction in speaker design.