New amp for Vandersteen 2CE


Hoping you can help me narrow down my choices for a new amp for my Vandersteen 2CE speakers.  I have been using a pair of Adcom GFA565 monoblocks.  They have ridiculous amounts of power, but I don't come anywhere near using it all and I would like a little more clarity in the midrange.  I have two used amps I'm considering - a McCormack DNA 0.5 and a Pass Labs Aleph 5.  Another option would be a fully restored/upgraded Adcom 535/545/555.  Source is a Sonos Connect with a passive attenuator for volume control.
Thanks for the help!
craig2112
there are a few very good older threads, discussing the poor quality DAC in the Sonos as well as well as jitter issues
I just got a Schiit Bifrost Multibit for my PC, and am very impressed with it.-Especially, the price-about $600 bucks. They also have a return period.
I also use the McCormack DAC-1 and recommend it highly. 
I'm thinking Parasound ZDAC, DAC Magic, Benchmark DAC1, or the Bifrost.  Hadn't considered the Multibit, but it does look interesting.  Obviously just going to have to try something and see how it goes.
Congratulations on the amplifier purchase!  Hope it brings a lot of long term satisfaction.

As it seemed you felt open to consider tube amplification, the best amplifier I have listened to with Vandersteen 2 speakers was the Music Reference RM9. At the time, this amplifier - loudspeaker combination retailed for $4500, and sounded simply magical. Pricing has risen slightly, yet the sound will still beguile.

Your concerns for the children would also be taken care of by the tube cage.