JBL 308P MkII Powered 8" Two-Way Studio Monitor (PAIR)


Audio engineers, producers, and musicians looking for a high-quality monitoring solution will be impressed with the  JBL 308P MkII - Powered 8" Two-Way Studio Monitor, a bi-amplified reference monitor with next-generation drivers, offering high detail, precise imaging, a wide sweet spot, and a remarkable dynamic range to enhance the mix capabilities of any modern workspace. The magnetically-shielded 308P MkII features dual 56W Class-D amplifiers, which power the 8" low frequency woofer and woven-composite 1" neodymium tweeter. The combined output of the woofer and tweeter offer a frequency response of 45 Hz to 20 kHz with a peak SPL of 112 dB.

The monitor features JBL's Image Control Waveguide technology for accurate audio reproduction and JBL's Slip Stream port design for improved bass response. The 308P MkII is equipped with a boundary EQ for controlling the low frequency response when placed near a wall, as well as a 3-position HF trim switch. To ensure flexible connectivity, JBL included a balanced XLR input and a balanced 1/4" TRS input, both of which feature dented level control. Other features include a selectable input sensitivity switch that ensures compatibility with a range of signal sources. The JBL 308P MkII ships with a power cord.

  • Patented Image Control Waveguide for detailed imaging and a broad, room-friendly sweet spot
  • High-quality 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 112W of power for high output and dynamic range
  • 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, +4 dBu / -10 dBV 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

Key Features

  • Bi-Amplified Powered Reference Monitor
  • Dual 56W Class-D Amplifiers
  • Low Frequency Woofer: 8"
  • Neodymium Woven-Composite Tweeter: 1"
  • Image Control Waveguide Technology
  • Balanced XLR and 1/4" TRS Inputs
  • 3-Position HF Trim Switch
  • Boundary EQ for Placement Near Walls
  • Slip Stream Low-Frequency Port Design
  • Selectable Input Sensitivity Switch


Monitor Type Active 2-Way

Enclosure Bass-Reflex, Shielded

Power Rating 112 W


HF Driver: 1 x 1" / 25.4 mm Dome Tweeter

LF Driver: 1 x 8" / 203.2 mm Woofer


1 x HF Amplifier: Class-D Rated at 56 W

1 x LF Amplifier: Class-D Rated at 56 W


Frequency Range 37 Hz to 24 kHz (at -10 dB)

Frequency Response 45 Hz to 20 kHz ± 3 dB

Maximum Sound Pressure Level (SPL) 112 dB

Signal-to-Noise Ratio 75 dBA

Total Harmonic Distortion (THD) <10%

THD+N < 0.2%

Maximum Input Level

+20.3 dBu (Balanced)

+6 dBV (Unbalanced)

Protections and Limiting Peak Limiter

Signal Processing


HF Shelf 

LF Shelf


Crossover Frequency 1800 Hz, 24 dB/Octave Slope

Crossover Type Linkwitz-Riley


Audio I/O

1 x XLR Balanced Female Analog Input

1 x 1/4" TRS Balanced Female Analog Input


AC Input Power 100 to 240 VAC, 50/60 Hz


Enclosure Material ABS, MDF

Dimensions (W x H x D) 10 x 16.5 x 12.1" / 254 x 419.1 x 307.3 mm

Weight 17.9 lb / 8.1 kg

Packaging Info

Package Weight 21.68 lb

Box Dimensions (LxWxH) 19 x 13 x 13"

Listed3 months ago
ConditionMint (Used)
Mint items are in essentially new original condition but have been opened or played.learn more
  • 308P MkII 2-Way 8" Active Nearfield Studio Monitors (Pair)
  • Black
  • 2020-2023
  • Active
  • Analog
  • Solid State

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