They lack the balanced sound of some similarly priced models.

The Z150 are an average upgrade over your PC speakers, but you can get more bass for your buck with similarly priced alternatives.

Logitech’s Z150 stereo speakers cater to those with simple needs. No flamboyant designs or crazy amounts of connectivity options for these users. It’s enough to find a pair that brings a little extra volume and clarity to our computer audio and fits on our desk. Even within our budget PC speaker roundup, this pair (not even $20 currentlyon Amazon) is notably inexpensive and unassuming.

As you’d expect with entry-level speakers, the Z150 set is small, lightweight, and slim on features. The enclosures measure 6 x 3.3 x 3 inches (HWD), and each are constructed with matte-black plastic, weighing just over a pound. The 2-inch speaker drivers are uncovered on the front panel, and the control unit has a power/volume knob, a headphone jack, and input for other devices like your phone or tablet. A cutaway at the bottom of each speaker seems to be for aesthetic purposes rather than any sound enhancement.
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https://www.pcworld.com/article/3256087/logitech-z150-stereo-speakers-review.html