Tried on two different configurations (a small amp Russ Andrews Rave, connected to a MacBook Pro by Pinnacle Audio Duette interface and an integrated Wyred4Sound Mint extraordinary quality amp with integrated DAC and a power module 2X100 watts), the P4 proved to be deplorable. Grave congested acute packed, clutter mediums, inelegant stamps, limited dynamic, nothing in there that justifies the praises read here or there, presumably from a press strongly "encouraged" by the manufacturer - or journalists to the ears damaged by gusts frankly disgusting products, many brands flooding the audio market "portable" or computer for years. The only quality that we can recognize them is to produce a much higher soundstage, wide and deep that their size would let suppose - with a lot of strength in the center. For the rest, they are buried by 7 Kef Coda 19 years old, who dégottent for a hundred euros on ebay, and, as other references 90s like Boston CR65 or small the time of assignment, recall how many factors are small speakers for years far more obsessed with reducing manufacturing costs by improving the quality of listening. The Kef in question associated with the same email that P4, create an image that is both more realistic and pleasant, with a keen and agile spun a rich medium, a surprisingly deep and serious net, dynamic worthy of a true premium listening, all for a jig certainly a little higher and finish without charm, but we buy a priori speaker for the way they sound rather than their look. In short, to put that kind of budget in a compact enclosure, so the opportunity to buy one of the above references. The result is disproportionate.