[Optimus Praim]

Hey guys does anyone have any experience with this amplifier from fred_fred?
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=190523448355&ssPageName=STRK:MEWAX:IT
 
Does it really boost your listening quality?
Is it worth trying over amps like Fiio E7 for example?

 

[jackmccabe]

I would suggest you take a look at the fiio e11 which costs about $70 and is supposed to sound great.
Although currently there is limited supply but there should soon be a lot more.