I have had the Fosgate for a few months now and have to say that I am very happy with it, replaced a Lehmann Black Cube Linear with it and much prefer the sound, even better now that I have replaced the stock tubes with NOS Mullards. Great soundstage, good bass, great detail and totally non fatigueing. I have it set up with a Bel Canto Dac 3 fed by a NAS drive and Spotify Premium via Sonos linked by a DH Labs D75 digital cable, the link between the dac and the Fosgate is Chord Indigo phono cables, all driving a pair of Grado GS1000 phones recabled with Moon Black Dragon. I have found the bass boost useful but generally only on the minimum setting, it only seems to effect the lowest frequencies and therefore does not creat bass that booms. The spatial effect I can't say that I like and rarely use, it is meant to move the soundstage further away which it does subtlety on it's minimum setting but on maximum it sounds a little like it is coming through a chamber! Overall though a great sounding bit of kit for my tastes which are quite wide, it has stopped me looking to upgrade for the moment, well except for the phones but that's a different story.