JBL 306P MKII

The JBL 306P MkII is a powered 6.5-inch two-way studio monitor that delivers JBL’s flagship M2-derived reference sound with deeper bass and more output than the 305P MkII. Its patented Image Control Waveguide provides detailed imaging and a broad sweet spot, while 112 watts of bi-amplified Class-D power drive a 6.5-inch woofer and 1-inch soft-dome tweeter for accurate, dynamic monitoring in home and professional studios.

Highlights

• 6.5-inch woofer and 1-inch soft-dome tweeter
• 112W bi-amplified Class-D power (56W + 56W)
• 47 Hz-20 kHz response and 110 dB peak SPL
• Image Control Waveguide for a wide, accurate sweet spot
• Slip Stream low-frequency port for deep, clean bass
• Boundary EQ, HF trim, and XLR/TRS inputs

JBL 306P MkII: More Bass, Same Accuracy

The larger 6.5-inch woofer extends the 306P MkII’s low end to 39 Hz at -10 dB, so kick drums, bass lines, and 808s are easier to judge without a subwoofer. Engineered to JBL’s Linear Spatial Reference criteria, it delivers an accurate response across the listening area, not just at a single point.

Room-Friendly Controls

A Boundary EQ switch tames bass buildup when monitors sit near walls or on desks, and a three-position HF trim switch (-2, 0, +2 dB) adjusts the high end for your room. An input sensitivity switch matches professional (+4 dBu) and consumer (-10 dBV) sources.

Setting Up the 306P MkII

Place the monitors at ear height in an equilateral triangle with your listening position, with tweeters aimed at your ears. Connect them to your interface with balanced XLR or 1/4-inch TRS cables, set input sensitivity, then fine-tune with Boundary EQ and HF trim.

What to Pair With the 306P MkII

Pair the 306P MkII with an audio interface, balanced cables, monitor stands or isolation pads, studio headphones for cross-checking, and the JBL LSR310S powered subwoofer for full-range playback.

Bass at Any Volume

JBL’s Slip Stream port delivers deep, articulate bass at both low and high playback levels, so your mixes stay balanced whether you’re working quietly late at night or turning it up for clients.

Built for Reliability

Every 306P MkII is tested for 100 hours at full power, and the sleek, modern design makes a visual upgrade to any studio.

306P MkII vs. 305P MkII

Both share JBL’s Image Control Waveguide and room controls. The 306P MkII steps up to a 6.5-inch woofer and 112W of power for deeper bass and 110 dB output, while the 305P MkII’s 5-inch woofer suits smaller rooms and desks.

JBL 306P MkII FAQ

Do I need a subwoofer? Many users don’t. The 306P MkII extends to 39 Hz (-10 dB), but a sub adds deeper bass for bass-heavy genres.

What inputs does it have? Balanced XLR and 1/4-inch TRS inputs with volume control.

JBL 306P MkII Specifications at a Glance

• Drivers: 6.5-inch woofer, 1-inch soft-dome tweeter
• Power: 112W total (56W LF + 56W HF), Class-D
• Frequency response: 47 Hz-20 kHz (+/-3 dB)
• Frequency range: 39 Hz-24 kHz (-10 dB)
• Max peak SPL: 110 dB
• Crossover: 1425 Hz
• Inputs: balanced XLR and 1/4-inch TRS

Who Buys the JBL 306P MkII

• Home and project studios
• Music producers
• Mixing and mastering engineers
• Schools and media labs

Why Buy the JBL 306P MkII From Metro Sound & Lighting

Metro Sound & Lighting isn’t a catalog-only retailer. We design, install, and service audio and recording systems in-house, so our team can help you set up your studio and support it after the sale. We offer B2B and integrator pricing for schools, churches, and studios.

Browse more options in our Studio Monitors category, or see the full specifications on the official JBL 306P MkII product page.