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Description
Quantum Audio QPX4000.1D 1-Channel 4000W MAX QEA Series Class D Monoblock AmplifierQPX4000. 1D Class D Monoblock Amplifier 4000 Watts FEATURES: Class D Monoblock Amplifier 1 Ohm Stable capability Amber Glow Logo Badge Audiophile Grade Components Speaker Short Circuit Protection High Efficiency Mosfet Design 12 dB Variable Low Pass X over 12 dB Variable Bass Boost 12 dB Variable Subsonic Filter 15Hz 55Hz Variable Phase Shift Double Sided PCB Q Link Master Slave Technology @ 2 Ohm Bass Remote Included SPECIFICATIONS: Dynamic Power :
- QPX4000.1D Class D Monoblock Amplifier / 4000 Watts
- Class D Monoblock Amplifier
- 1 Ohm Stable capability
- Amber-Glow Logo Badge
- Audiophile Grade Components
- Speaker Short Circuit Protection
- High Efficiency Mosfet Design
- 12 dB Variable Low Pass X-over
- 12 dB Variable Bass Boost
- 12 dB Variable Subsonic Filter 15Hz – 55Hz
- Variable Phase Shift
- Double Sided PCB
- Q Link Master/ Slave Technology @ 2 Ohm
- Bass Remote Included
- Dynamic Power : 4000 Watts
- Power 1 X 4000 Watts @ 1 Ohm mono
- Power 1 X 2000 Watts @ 2 Ohm mono
- Signal to Noise ratio >90dB
- Variable Subsonic Filter 15Hz – 55Hz
- Low Pass Crossover: 25Hz-250Hz
- Bass Boost @ 45Hz: 0-12db
- Phase Shift Control: 0-180 degree
- Frequency Response 10Hz – 220Hz
- THD at Rated Power 1 % <0.1%
- Input Sensitivity: 200mV – 6V
- Length: 9.05” / 230mm
- Width: 8.6” / 220mm
- Height: 1.96” / 50mm
FEATURES:
SPECIFICATIONS:
DIMENSIONS:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.3 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Highly Recommend for Aggressive Chewers!
I recently purchased the JAYU PET Toothbrush Toy Dog Chew Toy, and it has exceeded my expectations. If you’re looking for dog chew toys that are both durable and functional, this is a great choice. My dog is an aggressive chewer, and this toy has held up extremely well without breaking or wearing down.
What I love most is how it helps clean my dog’s teeth while chewing. The textured design removes plaque and tartar naturally during playtime. It’s much easier than brushing my dog’s teeth manually, and my dog actually enjoys using it.
This dog dental toy is perfect for small and medium dogs and keeps them busy for long periods, which helps reduce boredom and destructive behavior. It’s sturdy, safe, and clearly designed with dental health in mind.
Overall, this is one of the best dog chew toys I’ve purchased—durable, engaging, and great for maintaining my dog’s oral hygiene. I will definitely be buying another one!
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Reviewed in the United States on December 24, 2025
★★★★★ 2
Not for aggressive chewers
My 14 pound puppy chewed a big chunk out within 30 minutes. Would not recommend if you have a dog that likes to tear into things
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Reviewed in the United States on May 30, 2026
★★★★★ 1
Not for aggressive chewers as labeled; poor quality
Really disappointed in this item. My barely 16 lb., 1 1/2 yr old labradoodle chewed right thru the plastic in literally 6 seconds. I was going to toss it but at $18, the item should live up to its description-this toothbrush toy is rated 80% on the aggressive chew scale as per packaging…NOT AT ALL! She bit off a couple off chunks immediately, then proceeded to bite off the spikes…couldn’t believe how quickly the toy was destroyed & I took it away within moments of giving it to her.
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Reviewed in the United States on February 10, 2026
★★★★★ 5
great for my dog
my 1 y/o pomeranian won’t let me brush her teeth. she also needs a lot of enrichment. i love putting a dollop of toothpaste, some wet food & few pieces of kibble in this toy for her. it keeps her busy for about 10 minutes and she really enjoys playing with it while consuming everything she can out of it. wonderful way to enrich while giving dental care. she is also a pretty good chewer and it’s still in one piece!
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Great Product!
Size: Medium, Color: green, orange, pink, Pattern Name: clean tuff bone bacon
My dogs love their dental chews! This product is durable and the perfect size for each of my dogs. I've purchased two of them (medium and large). One of my dogs is an aggressive chewer and this product is holding up. Hartz makes great pet products. I'm very happy with the product.
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Reviewed in the United States on March 30, 2026