Streaming Preamp


I have been upgrading my bedroom system which started out with just the Cary AiOS and a pair of SCM 7's.
Looking for a streaming preamp and the three I am considering are:
AVM Ovation SD5.2
Musical Fidelity m6 Encore Connect
Cambridge Edge NQ
I am unable to hear each in my system and just looking for some general info from "sound" to functionality. Also, any other recommendations.
Thanks
Scott
System:
Cary AiOS as pre 
Parasound A21
ATC SCM 19's (sound anchor stands)
SVS subs
Morrow cables
Shunyata PS8

amboguzzi
Are you looking just for a preamp or an integrated amp with built-in streamer/DAC? 
Get a new latest version of Linn Akurate DS/DSM with Katalyst DAC architecture. It retails for between $10k to $15k. It is a digital streamer/DAC with preamp built-in. The DSM has analog audio inputs, HDMI, Ethernet, spdif (coax digital), optical digital. The DS only has an Ethernet input. Both DS & DSM volume controls can be set to either fixed thus using it strictly as a digital streamer/DAC or a source component or variables thus using it as a streamer/DAC/preamp. Very musical sounding unit.

Or if you can swing it for the latest version of Linn Klimax DS/DSM with Katalyst DAC architecture, which is Linn's flagship unit. Retails for $30k. Highly musical sounding streamer/DAC. 
Fyi, Linn does not make standalone analog preamps anymore. 

Thanks for the response.
However, both units you suggest are too much money. I was in the market of 4-7k.
Thanks