SKU: 19621817728

JL Audio HD1200/1 : Mono 1200W Hi-Definition Amplifier @ 1.5-4Ω

Sale price$697.50 Regular price$775.00
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Description

JL Audio HD1200/1 : Mono 1200W Hi-Definition Amplifier @ 1.5-4ΩHD Series Monoblock Class D Wide Range Amplifier, 1200 Watts x 1ch @ 1. 5 4 Ohms. JL's most powerful HD amplifier employs their advanced Single Cycle Control switching design and R. I. P. S. technology to deliver 1200W of clean power into any impedance between 1. 5 and 4, giving you the highest degree of flexibility in designing your subwoofer system. Tight power supply regulation keeps distortion down and maximizes your bass quality. From a pure

HD-Series Monoblock Class-D Wide-Range Amplifier, 1200-Watts x 1ch @ 1.5-4-Ohms.

JL's most powerful HD amplifier employs their advanced Single-Cycle Control switching design and R.I.P.S. technology to deliver 1200W of clean power into any impedance between 1.5 and 4Ω, giving you the highest degree of flexibility in designing your subwoofer system. Tight power supply regulation keeps distortion down and maximizes your bass quality. From a pure sound quality perspective, JL invites you to compare the real-world, in-car performance of this amplifier to any other amplifier on the market, of any type, at any price.

While targeted primarily to subwoofer applications, the HD1200/1 is a wide-range amplifier and can also be used to drive high-performance mid-range speaker systems.

This amplifier features a brushed aluminum finish with black powder-coated cast alloy heat sinks and bottom panel. A black powder-coated, gasketed cover is also provided to protect the controls.

General Specifications
  • Frequency Response
    6 Hz - 8 kHz (+0, -1dB)
    S/N Ratio, referred to highest rated power
    >110 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
    S/N Ratio, referred to 1 W (Main Channels)
    >79 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
    Damping Factor @ 4 Ω
    >500 / 50 Hz
    Damping Factor @ 2 Ω
    >250 / 50 Hz
    THD+N @ Rated Power (Main Channels)
    <0.03% @ 4 Ω
    Input Voltage Range @ RCA Inputs
    Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High)
    Min.Copper Power / Ground Wire Gauge
    2 AWG wire
    Fuse Rating
    100 A (AFS, AGU or MaxiFuse™)
Output Specifications
  • @ 4 Ω
    1200 W RMS x 1
    @ 3 Ω
    1200 W RMS x 1
    @ 2 Ω
    1200 W RMS x 1
    @ 1.5 Ω
    1200 W RMS x 1
Documentation
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 19621817728

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Stane
Louisville, US
★★★★★ 5
Warm, Comfortable, and Great Value!!
Material Type: Recycled Polyester, Color: Black Red Buffalo Check, Size: Medium
This fleece is cozy and does a good job keeping warm in cold weather. The material is soft, the fit is comfortable, and it layers well over a shirt. Not heavy-duty outerwear, but perfect for everyday wear and great quality for the price.
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Reviewed in the United States on January 17, 2026
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S. Chung
Charlottesville, US
★★★★★ 4
Thick and Warm, but not too comfy
Material Type: Recycled Polyester, Color: Light Grey Heather, Size: Medium
These are great pullover 1/4 zip fleece sweaters. They are relatively thick and very warm, about twice as thick and stiff as the common Columbia fleece pullover. The fleece is very dense, almost like a jacket. Pros: - Quite thick and warm, almost too warm - Good fitting cut (doesn't bulge in the wrong places) - Good value for the price - Lots of different color choices Cons - Quite thick - a bit stiff and not very stretchy (not great to sleep in, can be hard to put on or take off) - It has a seam running down the middle of the back. It doesn't bother me, but it would be better if it had no seam there. Overall recommended if you're looking for a thick/warm fleece sweater of decent quality, without spending much money.
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Reviewed in the United States on June 16, 2025
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Jim Pierce
Dallas, US
★★★★★ 5
Awesome.
Material Type: Recycled Polyester, Color: Light Grey Heather, Size: X-Large
Fleece jacket is nothing short of awesome. I picked up a few over the years and always been pleased with them. Worn to work, for casual wear, And now that i'm retired just around the house to keep warm. They wear well, Wash well, Hold their shape stitching and zippers. Watching their price I scored this win for twelve dollars and sixty cents. They lend themselves well to layering as well. A real value in this day and age. Very true to size very comfortable.
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Reviewed in the United States on February 5, 2026
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Reviewer123
Belleville, US
★★★★★ 5
So Soft and Warm
Material Type: Recycled Polyester, Color: Black, Size: Small
Great quality fleece for the price. It’s soft, warm, and fits true to size without feeling bulky. The quarter-zip design makes it easy to layer, and it looks nice enough for everyday wear. I’d definitely buy this again.
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Reviewed in the United States on January 21, 2026
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Amazon Customer
Houston, US
★★★★★ 5
Good Value!
Material Type: Recycled Polyester, Color: Blue Heather, Size: XX-Large
I bought one of these jackets a few years ago it is fairly thick and is great for outdoor wear. This new one is thinner material by quite a bit, but still well made. I like the zippered pockets. It is fuzzy and comfortable. Might even buy a third one in a different color!
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Reviewed in the United States on January 23, 2026

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