The JL Audio JD Series Monoblock Amplifiers combine advanced NexD™ Class-D switching technology with a powerful feature set to deliver clean, high-output performance in a compact, efficient design. Available in 250W, 500W, and 1000W versions, these amplifiers provide reliable power at 2 ohms with minimal heat and distortion—perfect for driving single or multi-subwoofer systems.
Premium features include a 12 dB/octave low-pass filter (50–500 Hz), variable bass boost EQ, and dual-range differential-balanced inputs for seamless integration with speaker-level or RCA signals. A unique LED clipping indicator ensures precise input sensitivity setup, while the rugged aluminum chassis with sleek industrial styling guarantees lasting performance.
Compact, efficient, and built to perform—the JD Series redefines value in premium amplification.

Product Dimensions:

• Width: 9 7⁄8 in (≈ 250 mm)
• Height: 2 1⁄8 in (≈ 54 mm)
• Depth: 7 1⁄2 in (≈ 190 mm)

Power & Output

• 250 W RMS × 1 channel @ 4 Ω
• 500 W RMS × 1 channel @ 2 Ω
• Class D design (NexD™ switching technology)

Controls & Filters

• Variable low-pass filter (cutoff frequency adjustable) Crutchfield+2Crutchfield+2
• Bass boost (variable) Crutchfield+2Custom Sounds+2
• Frequency & Distortion
• Frequency response: 10 Hz – 150 Hz
• THD at rated RMS power: 1%
• Signal-to-noise ratio: 62 dB

Input & Voltage

• Designed for 14.4V operating voltage
• Accepts speaker-level inputs and preamp-level inputs