JBL 308P MkII Powered Studio Monitor Speaker

18 MONTH SPECIAL FINANCING*
Applying for Financing is Quick and Easy!
- Apply: There are two easy ways to apply for financing. A credit application can be completed over the phone in a matter of minutes with a Kraft Music team member. Applications can also be completed online.
- Purchase: All financing orders are completed over the phone. Once you're approved, give us a call at 800-783-3368 to place your order! Or you can contact us and set up a time that works best for you!
Terms and Conditions
No interest if paid in full within 18 months*
On select brands purchased with your Synchrony credit card. Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 18 Months. Minimum monthly payments required. No minimum purchase price unless stated.
*Qualifying purchase amount must be on one receipt. No interest will be charged on the promo purchase if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo purchase from the purchase date. The required minimum monthly payments may or may not pay off the promo purchase by the end of the promo period. Regular account terms apply to non-promo purchases and, after promo period ends, to the remaining promo balance. For new accounts: Purchase APR is 29.99%. Minimum interest charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.
Credit is extended by Synchrony Bank.

Powered 8" Two-Way Studio Monitor
The next-generation JBL 308P MkII compact powered studio monitor makes legendary JBL performance available to every studio. With the revolutionary JBL Image Control Waveguide and refined transducers, JBL 308P MkII offers stunning detail, precise imaging, a wide sweet spot and impressive dynamic range that enhances the critical listening capabilities of any modern workspace. Featuring patented technologies derived from the JBL 7 Series and M2 Master Reference Monitors, and sporting a sleek, modern design, JBL 308P MkII delivers outstanding performance and an enjoyable mix experience at an accessible price.
- Patented Image Control Waveguide for detailed imaging and a broad, room-friendly sweet spot
- Next-generation JBL transducers for optimized transient response and improved linearity
- Patented Slip Stream low-frequency port for superior bass performance at all playback levels
- Dual integrated, custom Class-D amplifiers provide 112 watts of power for high output and dynamic range
- New Boundary EQ settings compensate for low frequency variants introduced by the environment
- HF Trim switch adjusts high-frequency output to room acoustics or personal preferences
- Flexible connectivity with balanced XLR and 1/4" TRS inputs, +4dBu / -10dBV input-sensitivity switch and adjustable volume control
- Engineered to JBL Linear Spatial Reference design criteria for outstanding accuracy in any working space
- Strenuous JBL 100-hour full-power test ensures years of reliability Sleek, modern design provides a visual upgrade to any studio
Why MkII?
Since their release, word has spread on the quality and value found in the original JBL 3 Series, resulting in wide adoption from hobbyists to high-end professionals working in music, film, post, and broadcast production worldwide. With such an obvious hit, you might ask, "Why update now?" On every project at JBL, there’s always a handful of features or improvements that the engineering team can’t squeeze in before going to production. 3 Series was no different. When the opportunity presented itself, JBL decided to make those final improvements to the transducers, add a frequently-requested feature, and apply the latest manufacturing learnings. The result—a new edition of this popular studio monitor that retains the best qualities of the original, but now looks better, sounds better, and provides transparent sound in even more production environments.
Patented Image Control Waveguide
Reveal impressive detail, ambience and depth in your mixes thanks to the groundbreaking JBL Image Control Waveguide. Originally developed for JBL’s flagship M2 Master Reference Monitor, this patented innovation ensures an acoustically seamless transition between the low- and high-frequency transducers and provides an immersive soundstage with precise imaging. Offering a broad sweet spot and neutral frequency response, JBL 308P MkII delivers a crystal-clear representation of your mix—revealing subtle details, even when listening off-axis.
Your Mix is Only as Good as Your Monitors
To help you make the best mix decisions, JBL equipped the 308P MkII with acclaimed 3 Series transducers that now perform even better. Hear deep, accurate and tightly controlled bass thanks to a long-throw 6" woofer and the patented JBL Slip Stream low-frequency port. Enjoy soaring, immaculately detailed highs via the woven-composite 1" Neodymium tweeter. JBL engineers took things to the next level with faster HF transient response through fine-tuned ferrofluid damping, and greater low frequency linearity and lower harmonic distortion courtesy of an enhanced woofer design. The result is a studio monitor you can trust—with unmatched peak handling, stunning dynamics and neutral frequency response that’s unbeatable in its class.
Big Sound Out of the Box
JBL 308P MkII is ready for the most demanding production styles right out of the box. Dual integrated Class D power amplifiers, custom designed by JBL for each transducer, give you generous dynamic range for any project. From music production and podcasting to cinematic sound design or daily vlogging, enjoy the output and power you need to hear exceptional detail at any volume—even at peak SPLs. Simply plug in, power on, and start creating.
Tailored Sound to Fit Your Studio
The dimensions and acoustics of a room can have a major effect on sonic accuracy, and that’s why JBL 308P MkII lets you adjust the response to fit your studio. The new Boundary EQ attenuates the low-end boost that can occur when you place monitors directly on the desktop or near walls. The 3-position HF Trim switch allows you to adjust the high-frequency response of the 308P MkII to tailor it to room acoustics or personal tastes.
Flexible Connectivity
Offering both balanced XLR and 1/4" TRS inputs, and adjustable +4dBu/-10dBV input sensitivity, the 308P MkII offers flexible, professional connectivity options to provide easy setup while maintaining your signal integrity.
70 Years of Expertise
The design of the 308P MkII leverages over 70 years of JBL acoustic expertise to create a refined studio monitor at an outstanding value. While other manufacturers use off-the-shelf components and make subjective decisions about the sound, JBL builds speakers that squeeze every ounce of performance from each component to deliver efficient, accurate sound reproduction. 308P MkII is designed to JBL’s Linear Spatial Reference criteria—a series of 72 individual measurements taken 360 degrees around the speaker to ensure a faithful reproduction of your mix, whatever your listening environment.
JBL Professional Reliability
JBL Professional studio monitors are designed for reliable performance, even when projects push your gear to the limit. Before being approved for production, 3 Series monitors must first pass JBL’s strenuous Power Test. Each model is required to perform flawlessly at maximum volume for an unheard-of 100 hours—without failure. As a result, you can depend on 308P MkII monitors to deliver consistently excellent sound reproduction for years to come.
SKU | JBL-308PMKII |
---|---|
MPN | 308PMKII |
Manufacturer | JBL |
Condition | New |
Included from Manufacturer | |
Speaker Application | Full-Range |
Active/Passive | Active |
Enclosure Material | Injection-molded structural ABS |
Woofer/Low Frequency | 8" |
Tweeter/Horn | 1" |
Frequency Range | 37Hz – 24kHz |
Frequency Response | 37Hz – 24kHz |
Power | HF: 56W Class D LF: 56W Class D |
Connectors | 1 x XLR, 1 x TRS Balanced |
Protection Circuit | No |
Pole Mount | No |
Flyable | No |
Height | 16.5" |
Width | 10" |
Depth | 12.1" |
Product Weight | 17.87 lbs |
JBL Warranty
The Warranty Card provided with your JBL product contains the full terms and conditions of your warranty.
Unless a different warranty period is stated in the Warranty Card provided with your JBL product, JBL warrants for a period of 1 year (5 years for any non-powered speakers) from the date of retail purchase by the original end-use purchaser, that this product, when delivered to you in new condition, in original packaging, from a JBL authorized reseller and used in normal conditions, is free from any defects in manufacturing, materials and workmanship.
Refer to the Warranty Card provided with your JBL product for specific details including what is not covered along with other terms and conditions.
- Ground shipping is FREE for all orders $99 and up.
- Our central, midwest location ensures fast delivery times.
- See below for transit day estimates. Please note, these are estimates and are not guaranteed.

Generally, package estimated transit days are as follows:
- Upper Midwest: 1-3 days
- Central US, South East US, and East Coast: 2-4 days
- West Central US: 3-5 days
- West Coast: 4-6 days
- Alaska & Hawaii: 7+ days