The owners of the Monarch Theatre would be wise to make sure their much-heralded PK sound system is finely tuned, since that baby's about to get a major workout this weekend. It's likely to be put through its paces on Saturday, January 18, when 30,000 watts of warped bass blasts and unyielding shockwaves of lightning-fast breakbeats flare through the club's speakers during Planet of the Drums. It's been a while since the EDM event, which has been around since 2000 and focuses strictly on drum 'n' bass, swung through Metro Phoenix, but it's just as much a rager as ever. The self-described collective of like-minded d'n'b stalwarts features the same lineup as in previous years and includes Dieselboy, AK1200, DJ Dara, and MC Messinian. Local drum 'n' bass practitioners Sens1, Travelah, and DanjaOne also are scheduled to drop the thunder. Doors open at 9 p.m. at 122 East Washington Street. General admission tickets are $15 online. See www.relentlessbeats.com.