JBL 308P MKII

JBL 308P MKII｜8-inch Active Nearfield Monitor Speaker Pair

Active monitor speakers built for mixing, editing, and content creation

JBL 308P MKII is an active monitor speaker from JBL, featuring the patented Image Control Waveguide technology and a dual-amplifier Class D design. It delivers 112W amplifier power, 45Hz–20kHz frequency response, and up to 112 dB Maximum SPL, making it ideal for nearfield and midfield monitoring, mixing decisions, and desktop studio applications.

Compared with traditional home speakers or general computer speakers, the JBL 308P MKII uses the linear response, wide sweet spot, and balanced input design required by monitor speakers to achieve more accurate spatial imaging and frequency judgment. Compared with entry-level nearfield systems in the same class, its Image Control Waveguide, Slip Stream low-frequency port, and room compensation features give it an advantage in studios that need fuller low-end extension, making it especially suitable for creators who need studio monitoring, mixing speakers, and post-production for audio and video.

This product package version　Pair　|　The same series also has a Single version; 305P MKII / 306P MKII are available in different sizes

Quick Facts

Brand:JBL
Model:308P MKII
Speaker Type:Active nearfield monitor speaker
Driver:8-inch woofer + tweeter
Amplifier Power:112W (LF 56W + HF 56W)
Frequency Response:45Hz–20kHz (±3dB)
Maximum SPL:112 dB Peak
Suitable For:Home studio mixing, midfield monitoring setups, video editing monitoring, music production and arrangement, content creation post-production

Who is the JBL 308P MKII for?

使用者建議分析(點此展開)

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適合誰購買

Home studio creators who want to upgrade their monitoring system and need more accurate frequency judgment and deeper bass extension than computer speakers
Music producers who work for long periods at a desktop nearfield or small midfield setup and want clear imaging, a stable sweet spot, and greater dynamic headroom
Video editors, composers, and content creators who need to balance vocals, music, and low-frequency effects, and want more complete low-end judgment than a 5-inch or 6.5-inch system
Beginners setting up a personal studio who want to buy a pair of active monitor speakers directly and reduce the complexity of external amplifier configuration

誰不適合購買

Those who mainly listen for high-volume entertainment in a large living room and seek theater-like bass impact; their needs differ from nearfield monitoring
Users who already have a professional monitoring system of the same class or above and only want a minor upgrade; the return on repeated investment may be low
Those with very limited desktop space who can only place small speakers close to the wall; an 8-inch model may be difficult to use to its full potential

JBL 308P MKII core technologies and features

Image Control Waveguide technology:Inherits the design philosophy of JBL 7 Series and M2 Master Reference Monitor, providing clearer left-right imaging, depth layering, and a wider sweet spot, so users do not need to stay locked to a single listening position to maintain stable judgment.
Next-generation driver design:Uses a new-generation JBL driver optimized for transient response and linear performance, making it easier to distinguish details such as drum attack, bass contour, vocal sibilance, and room reverb.
Dual-amplifier Class D architecture:Each speaker has built-in LF 56W and HF 56W amplifiers, for a total output of 112W, balancing efficiency, dynamics, and control, and delivering sufficient sound pressure and clarity for desktop nearfield and small studio use.
Slip Stream low-frequency port:JBL’s patented dual-flared port design reduces air turbulence and port noise, maintaining low-frequency readability at lower monitoring volumes and reducing bass muddiness at higher volumes.
Boundary EQ room compensation:When speakers are placed near a wall, on a desk, or in a corner, bass is often boosted by the environment; the built-in Boundary EQ can correct low-frequency anomalies caused by the room and improve flexibility in small-room setups.
HF Trim high-frequency adjustment:Allows you to adjust high-frequency output according to room absorption, desk reflections, or personal listening preference, making monitoring closer to the needs of the actual working environment.
Professional balanced inputs:Provides XLR and TRS inputs for direct connection to audio interfaces, mixers, or other professional equipment; balanced transmission helps reduce noise and interference.
+4dBu / -10dBV input sensitivity switch:Compatible with professional and consumer signal levels, improving integration with different source devices.
JBL Linear Spatial Reference design standard:Built according to JBL’s linear spatial reference standard, aiming to maintain more consistent monitoring accuracy across different acoustic environments.
100-hour reliability test:Undergoes JBL’s strict 100-hour power-on test, enhancing stability and durability for long-term use.
Magnetic shielding and compact cabinet:Can be deployed more safely in desktop, workstation, and small studio environments, balancing space efficiency and equipment compatibility.

Image Control Waveguide stereo imaging technology

Inherits the waveguide design of JBL’s high-end monitoring systems, allowing more even high-frequency dispersion and making left-right imaging and front-to-back depth easier to identify.
The sweet spot is wider, making it especially useful for desktop work, multiple listeners, clients present, or situations where you frequently move position while editing.

Slip Stream low-frequency port and bass extension performance

The 8-inch woofer paired with the patented Slip Stream low-frequency port maintains clear bass contour and extension even at low monitoring volumes.
The dual-flared port shape reduces port turbulence and wind noise, making bass cleaner and less muddy at high playback levels.

112W dual-amplifier Class D drive architecture

Each speaker is equipped with LF 56W and HF 56W amplifiers, providing a total output of 112W while balancing efficiency and dynamic performance.
For studios that need higher SPL, greater listening distance, or more complete mid-low frequency judgment, the 308P MKII offers more output headroom.

Boundary EQ and HF Trim room adjustment functions

Boundary EQ can compensate for bass buildup caused by wall placement, corner placement, or desktop placement, improving flexibility in small studio setups.
HF Trim can fine-tune high-frequency output according to room absorption and desk reflections, helping you get closer to the ideal monitoring balance.

XLR / TRS professional connectivity and input sensitivity switching

Provides XLR and TRS balanced inputs for direct connection to audio interfaces, mixers, controllers, or other professional source devices.
Built-in +4dBu / -10dBV input sensitivity switching and volume control make gain staging easier when integrating professional and consumer-grade equipment.

Technical Specs

Brand	JBL
Model	308P MKII
Speaker Type	Active nearfield / midfield monitor speaker
Active / Passive	Active
Driver	8-inch woofer + tweeter
Amplifier Power	112W (LF 56W + HF 56W)
Frequency Response	45Hz–20kHz (±3dB)
Maximum SPL	112 dB Peak
Connector	XLR, TRS
Input Sensitivity	+4dBu / -10dBV switchable
High-Pass Filter	None
Power Source	AC powered
Dimensions	Approx. 254 x 419 x 308 mm (each)
Weight	Approx. 8.1 kg (each)
Warranty	According to the manufacturer and distributor warranty policy

JBL 308P MKII Pros and Cons

Pros & Notes (Click to expand)

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Pros

The 8-inch woofer provides fuller low-frequency extension, which is helpful for judging bass, kick drums, and low-end effects in video
Image Control Waveguide provides clear stereo imaging and a wider sweet spot, making mix positioning easier
The 112W dual-amplifier Class D architecture balances efficiency, sound pressure, and dynamic headroom
XLR / TRS balanced inputs and +4dBu / -10dBV switching make it easier to integrate multiple source devices
Boundary EQ and HF Trim increase practical adjustment flexibility for small studios and desktop environments

Notes to Know

This page is for the Pair version; if you only need a single speaker as a supplement, confirm whether the Single version is selected
The 8-inch cabinet is relatively large, so desktop space, stand height, and rear clearance should be planned in advance
It must be used with an audio interface, mixer, or source device with analog output; it is not a Bluetooth speaker design

JBL 308P MKII FAQ

Q：Is the JBL 308P MKII suitable for professional mixing and studio monitoring?

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A：Yes, because it features balanced inputs, a wide sweet spot, and deeper low-frequency extension, making it suitable for mixing decisions.

Q：What is the difference between the 308P MKII and 306P MKII?

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A：Yes. The 308P MKII uses an 8-inch woofer, delivering deeper bass and greater dynamics, making it better suited for users who need more low-frequency information.

Q：Can the 308P MKII be connected directly to an audio interface?

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A：Yes, because it provides XLR and TRS balanced inputs, and most professional audio interfaces can connect directly.

Q：Is the 308P MKII suitable for small rooms or desktop studios?

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A：Yes, but it is recommended to leave enough placement distance and make good use of Boundary EQ to correct low-frequency effects caused by wall proximity.

Q：Is the 308P MKII worth buying as a first pair of monitor speakers for beginners?

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A：Yes. If you value low-frequency accuracy and future upgrade potential, the 308P MKII is a very suitable one-step choice.

THINK2 Warranty & Support

Service Highlights

Fast Shipping: In-stock items will be shipped within 24 business hours.
Professional Technical Support: Our certified audio engineers provide consultation for installation, licensing, compatibility, and setup.
Comprehensive Warranty & After-Sales Service: Includes both manufacturer warranty and THINK2 customer support.

※ Shipping times are calculated based on business days. Actual warranty follows the manufacturer’s policy. THINK2 provides integration and support assistance.

Warranty & Return Policy

With valid proof of purchase and product serial number, customers are entitled to manufacturer warranty and THINK2 after-sales service.
DOA / Non-human defects: Within 7 days of purchase, after verification, customers may request return or replacement.
Exclusions: Damages from misuse, unauthorized modification, consumable parts, natural disasters, or improper use beyond instructions.
Application Process: Contact customer service during business hours for return instructions.
Service Coverage: Taiwan region primarily; overseas based on logistics standards.

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