If you've had your eye on audio or AV gear from Monoprice, today is probably a good day to make the purchase, thanks to a 20% off special .

For today only, Monoprice is offering 20% off on products bearing its own brand. This includes a sizable variety of audio and AV speakers, subwoofers, headphones, and electronics. All you need to do is follow the link and use the code SURPRISE1 when you check out for orders under $500. Plus, select items over $500 are on sale (including Monolith subs) and for that deal you can shop this page and use the code  SURPRISE2 instead! There are also a bunch of projection screens under SURPRISE2 so be sure to check it out .

This particular sale came to my attention through my existing review for the  Monoprice Monolith 15" THX Certified Ported Subwoofer . This is an exceptional high-performance subwoofer that, once you apply the 20% savings, is practically unbeatable in terms of price-performance ratio.

The Monoprice Monolith 15" Ported THX Subwoofer.

If you are into home theater, or you have a band, another interesting product is the Monoprice Stage Right 15″ Passive PA Speaker . At first glance, you might think that it's just for DJs. However, these speakers perform extremely well if pressed into home theater duty. High sensitivity and a favorable dispersion pattern from the horn deliver crisp and dynamic sound at an impossibly low price, compared to many other options at this performance level.

Monoprice has an excellent selection of headphones, including numerous planar magnetic models that deliver high fidelity at heretofore unthinkably low pricing. An excellent example is the recently reviewed  Monoprice M565/M565C planar headphones .

On any given day, Monoprice has some of the lowest prices you will find on high-performing audio gear. But if you throw in 20% savings, some of the deals become truly unbeatable. The only catch is it's a one-day sale so don't miss it .