Our Verdict 
We know not everyone has room for full-sized speakers, but this is a compromise too far
For 
Excellent integration between satellites and subwoofer
brand and design uniqueness
ultra-flexible over positioning
Against 
Shortcomings in dynamics, detail and attack lead to a lifeless delivery
could do with greater bass depth
Reviewed on

Despite looking rather like a PC-partnering desktop system, it's clear that Waterfall wants us to think of the Serio 2.1 as a discreet hi-fi system.

The idea is that using something called Heatstream technology, the company has enabled its dinky speakers (roughly the height and width of a CD case) to handle the kind of power usually associated with much bigger speakers.

Of course, there's a separate subwoofer to help fill-out the sound, too.

In theory it sounds great, but in practice it falls short. Play the Gladiator soundtrack and the delivery is disappointingly dull and flat, lacking the dynamic drama that we know is on the disc. Treble lacks sparkleDetail levels all-round are reasonable, but unspectacular, and treble seems cut-off and short of sparkle, further reducing the attack and openness of the delivery.

There's a bit of a lack of bass depth, too, but this is one flaw we can just about put up with, as its a trade-off for the Serio's one key quality – integration.

More after the break

As we well know, getting a subwoofer to integrate with satellite speakers is a real challenge, but here the HF1 sub tonally and rhythmically melds harmoniously with the tiny speakers.

See all our Style Speaker package Best Buys

Is that enough to make up for the system's other sonic shortcomings? No, and when you factor in that neither the satellites or subwoofer look or feel as luxurious as the price tag suggests, you can perhaps understand why we're so disappointed by the Waterfall.

For this money you can pick up a complete, 5.1 B&W MT-25 package, and it still sounds better in 2.1 than the Serio. Damning, but true.

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