...and that's not altogether a bad thing. Barenboim certainly has very firm ideas about how the pieces should go and he executes them perfectly. However, his Bach is a very acquired taste - highly Romantic and blurred with pedal, contrapuntal lines often get lost under layers of pedalling. I'd say his Preludes are overall a success, but the Fugues are often a disaster, with exaggerated dynamics, portentously slow tempos and pretentious ritardandos in the end. Barenboim is at his best in the rare occasions that he plays them straightforwardly, like the Book 1 G Major for example. Sound quality is excellent - beautiful and realistic piano sound.
But, if you want a Romantic Well-Tempered Clavier I think Angela Hewitt's second recording is more successful than Barenboim.