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Description
Rockford Fosgate Power T400X4AD - 4 Channel Ultra-Compact AmplifierRockford Fosgate Power T400X4AD 4 Channel Ultra Compact Class AD Amplifier The Power T400X4AD 400 Watt 4 channel ultra compact, amplifier is built on Rockford Fosgates proprietary Class AD technology, featuring Constant Power to produce the same output at both 4 Ohm and 2 Ohm impedances. Flexible vehicle integration enabled through low level and high level inputs with auto turn on. Top mounted controls allow easy access to built in crossover and C. L.
Rockford Fosgate Power T400X4AD - 4 Channel Ultra-Compact Class AD Amplifier
The Power T400X4AD 400 Watt 4-channel ultra-compact, amplifier is built on Rockford Fosgate’s proprietary Class-AD technology, featuring Constant Power to produce the same output at both 4-Ohm and 2-Ohm impedances. Flexible vehicle integration enabled through low-level and high-level inputs with auto turn-on. Top mounted controls allow easy access to built-in crossover and C.L.E.A.N. input/output clip detection circuits. The 3-stage thermal lock extrusion with dual fan forced induction keeps everything cool while real-time thermal/protection schemes safeguard the amplifier.
- Number of Channels: 4
- Rated Power(RMS Continuous Power):
- 100 Watts x 4 @ 4-Ohms
- 100 Watts x 4 @ 2-Ohms
- 200 Watts x 2 @ 4-Ohms Bridged
- Total Power (Sum of Rated Power): 400 Watts RMS
- Dynamic Power (PVC/PowerCube® Measurement)
- 128 Watts x 4 @ 4-Ohm
- 152 Watts x 4 @ 2-Ohm
- 290 Watts x 2 @ 4-Ohm Bridged
- Bridgeable: Yes:
- Front Terminals: Left (+) Right (-)
- Rear Terminals: Left (+) Right (-)
- Crossover Controls:
- High-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth
- Low-Pass: 50Hz - 250Hz @ 12dB/Octave Butterworth
- All-Pass: Yes
- Tone Controls:
- Front Channels - Punch EQ
- Treble: 0dB to +12dB @ 12kHz
- Bass: 0dB to +18dB @ 45Hz
- Rear Channels - Punch EQ
- Treble: 0dB to +14dB @ 12.5kHz
- Bass: 0dB to +18dB @ 45Hz
- Signal Input:
- Front Low level: Front High/Low Level Input: 4-Pin harness
- Rear Low level: Rear High/Low Level Input: 4-Pin harness
- Signal Output: N/A
- Power Input Connector: Detachable Compression Terminal
- Power Wire Gauge: 10 AWG
- Speaker Output Connector:
- Front: 4-Pin Harness
- Rear: 4-Pin Harness
- Speaker Wire Gauge: 16 AWG
- Heat Sink Type: Extruded Aluminum
- Cooling: Dual Fan Cooled
- Remote Controls:
- Visual Indicators:
- Power: Blue LED
- Protect: Red LED
- Input Clip: Red LED
- Output Clip Blue/Red LEDrock
- Circuit Topology Class: Class A/B
- Frequency Response: 20Hz to 20kHz +/- 1dB
- Dimensions (HxWxL):
- 1.6 x 4.25 x 8.3 (in)
- 4.1 x 10.79 x 21.1 (cm)
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
4.4 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Power Chewer Loves This!
Size: Medium, Color: Antler
This is my dog's new favorite chew! She loves that she can hold it in her paws. I think she really loves the taste and texture of it. I don't give her antlers as I have heard too many horror stories about broken teeth. I also don't give her nylon toys as I have also heard a lot of horror stories of broken teeth as well as concerns about them digesting the plastic. This is between antlers and bully sticks, which is perfect for a power chewer. I feel comfortable with her eating the pieces that flake off this toy. She loves chewing and she will default to this toy when she wants to help calm down. I don't notice much of a smell. It does flake, but not enough I will even take a star off. Plus, it's plant based and vacuums up easily once dried. It doesn't capture her attention as much as bully sticks or beef cheek chews, but it's much less expensive over time and doesn't stink up our living room! She will also always pick this over any of her rubber chews. Great product and recommend it for all the power chewers.
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Reviewed in the United States on September 23, 2025
★★★★★ 3
Crumbly, odd texture
Size: Large, Color: Duo Pack
Neither of my dogs were very interested in these. They did chew on the antler-shaped versions more so than the infinity-style versions. When they did chew on these, they didn’t hold up well or last long. These have a strange, crumbly texture when chewed. You’ll find bits and pieces of these chews where the dogs have been chewing. Will not be reordering.
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Reviewed in the United States on April 5, 2026
★★★★★ 4
This appears to be a good alternative to the hard plastic chew toys.
Size: Large, Color: Duo Pack
My dog is a heavy chewer. I decided to try this brand out after using a different brand for quite awhile. while my dog seems to like it and carries it around (the pretzel shaped one) he doesn't seem to attack it as whole heartedly as his old brand, I'm thinking it might be the shape, we will see when he wears it out and I switch him to the antler shape. What I like most about it is it doesn't tear my hand up like the other brand did after he had been chewing it for awhile. While it is wearing down some it seems to do it in a more mild manner. Since we haven't had it long I would give this 3.5 stars because I don't know if it will last as long and not sure f it is just the shape that has him more mellow with it.
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Reviewed in the United States on January 27, 2026
★★★★★ 5
Choose your shape
Size: Medium, Color: Duo Pack
I love the idea of the dogs not eating nylabone plastic so have been searching for "healthier" options that last for heavy chewers. Two German Sherpherds, they are not big fans of the circular shaped toy but love the antler shaped one and even with both chewing on it, has not been destroyed yet and is not cutting their gums open. I am not finding pieces laying in the carpet. Recommend this
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Reviewed in the United States on May 29, 2026
★★★★★ 5
all natural - dogs love them!!
Size: Large, Color: Antler
Our golden retriever and lab both love these chews! All natural, not plastic like other brands. This is their favorite chew toy!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
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