With the bass boost, the bass is acoustically enhanced, natural, warm, thick, rich and airy. Bass seems to be surgically enhanced without affecting the mids!  I put this down to the latest technology in research.  Mids and treble are perfectly balanced with good clarity in the treble. Soundstage...

Just got these 2 weeks ago from amazon uk for £28, Overall sound quality is amazing for the price, please see my review here: http://www.head-fi.org/products/philips-shp3000/reviews/10610   Soundstage is wide (semi-open design) sound signature is very flat, bass is dynamic and extended. ...