The Edifier M1250 USB-powered speakers are inexpensive and sound clean and coherent on voice and music, but don't expect any bass.
The Edifier M1250 USB-powered speaker system is compact and lightweight, featuring two separate speaker units for putting either side of your notebook's screen. The whole system (including cables) weighs nearly half a kilogram, and the left-hand speaker alone — the one that has no built-in amplifier or electronics — still comes in at 198 grams.
Rather than the common round speaker drivers, these ones feature drivers shaped more like rectangles with rounded ends. The speakers are specified at 90x50mm by the vague conventions pertaining to speaker drivers (you measure from the screw holes). The actual working area is about 15mm smaller in both directions.
That makes the speakers quite a bit bigger than what seems to be the norm in USB speakers. That could translate into better bass, all else being equal. But the plastic enclosures are fairly compact, and have no bass reflex ports, not even behind the removable grilles.
Edifier says that each amp has 0.6 watts of power on tap ("RMS", which is inappropriately used here).
The right-hand speaker has a push button hard-wired power switch (which guarantees no power draw when switched off) and a volume knob, along with a 3.5mm headphone socket.
Set-up and cartage
Compact speakers make for easy carrying in one way, but lots of wires make for difficult carrying. You have two cables for connecting to the computer, plus one stretching between the two. I'd be reluctant to cart these speakers around for another reason: the clothe grilles aren't backed by a plastic grate. It's easy enough to push in the cloth and touch it through the cone of the speaker. And, indeed, somehow in transit, although the system looked to be factory packed, something had been pushing through the grille onto the left-hand speaker, deforming its rubber roll surround.