Latest Bricasti M1 who's heard?

I found the following info on the Bricasti network card option and the Bricasti M5 Network player but have no experience with this technology:

1) Network Player Option:

"First incorporated for the M12 Dual Mono Source Controller, The Bricasti network interface and media renderer option allows any Bricasti M1 DAC to be seen as a DNLA device on an audio network and server as an audio device to play or stream to through a wired connection on your network. Now you can run wired data longer distances without loss in quality so your network server can go anywhere you choose". 

Note:  I believe the Bricasti M1 DAC can be upgraded with the Network card but I do not know the cost.  

2) Bricasti M5 Network player:

"The Bricasti M5 network player is a network interface and media renderer that connects to your server via a local area network. With wide support for DNLA and other popular network protocols, the M5 delivers pristine lossless audio from your network to your Digital to analog converter; your music server can go anywhere you choose. Connects to your LAN via Ethernet and Wi-Fi, with SPDIF, AES outputs supporting sample rates up to 192k PCM, DSD 64 and DSD 128 over USB. MSRP is $2,400". 

http://www.bricasti.com/en/consumer/m5.php

@davidz,  As you posted above, what does it mean the "Bricasti M12 falls in the category of a "DAC/pre?"  

Is there a problem using the Bricasti M12 as a line stage pre-amplifier?    Please explain.  Thanks.