Studio monitors made for real rooms.
Your bedroom isn’t a treated studio, and the best monitors know it. Neither is your lounge room, your spare room or the corner of the garage, and these monitors don’t mind.
JBL Professional’s new 3 Series MkIII range is built for rooms like that: a desk, a wall close behind and not a bass trap in sight.
It’s the biggest redesign of the 3 Series so far. The drivers and waveguide are new, a front-firing port keeps the low end predictable when a monitor sits near a wall, and new Class D amplification brings more headroom and less noise.
The waveguide is designed to give a stable stereo image and a focused centre, so mix decisions feel less like guesswork.
The bit worth caring about is the room controls. Four one-touch settings let you bend the sound to suit the desk and wall you’ve got, with 81 combinations to choose from and no complicated setup.
The balanced combo inputs take an interface or a mixer without fuss.
The range starts with the 5-inch 305P MkIII, steps up through the 6.5-inch 306P and the 8-inch 308P, and adds a 10-inch 310S subwoofer that reaches down to 26 Hz.
Mounting points on every full-range monitor mean a stereo pair can grow into 2.1 or surround later.
Start with the 5-inch, and add the sub when the neighbours start learning your lyrics.
JBL Professional and Madison AV are putting the 3 Series MkIII monitors into the Needle In The Hay 2026 prize pool, a $50,000+ prize pool of recording gear, plugins, instruments and studio tools.
Needle In The Hay is Happy Mag’s annual hunt for emerging artists.
Mixing in a room that fights back? Enter Needle In The Hay here and put your songs in front of the nine-strong judging panel.