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Description
Phoenix Gold RX2400.4 - 4 Channel AmplifierPHOENIX GOLD RX2400. 4 400 Watt 4 Channel Class A B Amplifier System Configuration Flexibility of 4ch 3ch or 2ch with 400 watts of power RX2 400. 4 is a powerful 4ch 400W, class A B amplifier delivering massive power to support your systems needs. Configure as a 4ch for an active components setup or as a front rear stage amplifier. How about for a full system? Setup as 3ch mode you can run your front stage and a subwoofer. Configure in 2ch mode for
PHOENIX GOLD RX2400.4 400 Watt 4 Channel Class A/B Amplifier
System Configuration Flexibility of 4ch 3ch or 2ch with 400 watts of power
RX2 400.4 is a powerful 4ch 400W, class A/B amplifier delivering massive power to support your system’s needs. Configure as a 4ch for an active components setup or as a front/rear stage amplifier. How about for a full system? Setup as 3ch mode you can run your front stage and a subwoofer. Configure in 2ch mode for 200 watts x2 on whatever you choose. Anyway you configure it, you will be rewarded with efficient sound and musical quality while wrapped in a sleek, low profile chassis designed for versatility.
RX2 series amplifiers are the reference for style and value in any installation. Built with the legendary Phoenix Gold reliability, they feature heavy duty heatsinks, robust unregulated power supplies, and oversized direct input power and speaker terminals. They also sound sweet thanks to the audiophile-grade output transistors. We made upgrading your stock system easy by allowing high level inputs, so you can keep that hard to replace radio, and still upgrade the sound. RX2-series amplifiers are ready to impress with their effortless ability to provide power and clarity while keeping the chassis at a convenient size for any installation. The devil is in the details, so it just made sense that we allow the PG name plate to be removed and turned to match the orientation you might need for your install because we know you're going to want show off your system and make all your friends jealous.
- Class A/B Topology
- Small Footprint Chassis Design
- Robust Unregulated Power Supplies
- Rotatable Badging for installation flexibility
- High level Inputs for Easy OEM Integration
- Audio Precision® Quality Control Verification
Specifications
RMS Power Ratings listed at less than 1% THD @ 14.4v
| Number of Channels: | 4 |
| 4Ω: CH 1 - 4 | 75W x 4 |
| 2Ω: CH 1 - 4 | 100W x 4 |
| 2CH Mode: 1+2 4Ω Bridged & 3+4 4Ω Bridged | 200W x 2 |
| 3CH Mode: 1/2 4Ω Stereo & 3+4 4Ω Bridged | 75W x 2 + 200W x 1 |
| 3CH Mode: 1/2 2Ω Stereo & 3+4 4Ω Bridged | 100W x 2 + 200W x1 |
| Total RMS Power (Sum of rated power): | 400W |
| Bridgeable: | Yes |
| Crossover Mode: | FULL/HP/LP |
| CH 1 - 4 | 50Hz - 200Hz @ 12dB / Oct Linkwitz Riley |
| Input Channels: | 4CH F/R, 3 CH FRONT, 2 CH FRONT |
| Input Mode: | Unbalanced / Balanced |
| Processing: | Bass Boost 0dB / +6dB / +12dB @45hz |
| Input Sensitivity: | .2v - 6v Unbalanced RCA Low-Level |
| .5v - 15v Balanced Hi-Level Harness | |
| Signal to Noise (@ CEA Standard): | >80dB |
| Frequency Response: Full Range | CH 1 - 4 10Hz - 40kHz |
| Topology Class: | A/B |
| Heatsink Type: | Extruded Aluminum |
| Cooling Type: | Radiation |
| Operating Voltage: | 8V to 16V |
| Switchable Auto-Turn On: | No |
| Power Supply Type: | Unregulated |
| Power TerminalS: | 4 Gauge |
| Speaker Terminal: | 10 Gauge |
| On Board Fusing: | 2 x 30A ATC |
| Recommended Inline Fuse: | 50A |
| Dimensions (L x W x H): | 15.74” x 8.11” x 1.98” - 400mm x 206mm x 50.5mm |
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 23 reviews
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Product Reviews
★★★★★ 5
No drilling required
Size: Large
I installed this on my 2021 4Runner with the adhesive provided and no drilling. It has been a few months and it’s still solid. I live in Hawaii and the temps in the car have reached over 100* F pretty consistently and the adhesive has held up very well. There are a lot of attachment points for whatever you want to use it for. I only wish they sold the magnetic mount that it comes with so everything can match up. I use it for my phone and baby monitor. I would purchase this again.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Love this ram mount kit
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121, Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
All i can say is wow. This is an amazing ram mount kit for my 22 Silverado custom. All the hardware is top notch. The metal is all powder coated black with a nice grey American flag. There are so places to be able to mount addition arms. The phone holder it comes with is solid aluminum with a nice tight spring. I rate this 10/10 and for the price you can not beat it or find another better. I didn’t use the adhesive on the bottom so i can’t speak on that but i can only imagine it is really good as well. Hands down is just as good as the super expensive bulletpoint mount you see advertised. Don’t hesitate to buy.
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Reviewed in the United States on February 14, 2026
★★★★★ 4
Looks great
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
Fits great and is heavy enough to stay put. I used the adhesive backing to install as I did not want to drill into my truck but it still works well and I have had no issues with it popping out or anything else.
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Reviewed in the United States on March 31, 2026
★★★★★ 5
Highly recommend!
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
It’s all metal! Even the arm that holds the phone!!! All metal!!!!! No cheap plastic! You can drill or clean and stick. 2 for mounting. No more breaking air vents and suction cups cheap plastic that falls off the window or rear view mirror holder that blocks your vision. This is definitely worth the money.
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Reviewed in the United States on March 14, 2026
★★★★★ 2
The concept is great, the item is sub par.
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
I bought this for a 2021 Silverado WT thinking I'd be able to screw this into the dash cubby as the adhesive wouldn't servive -50⁰ F Fairbanks winters. Beware, if you own this truck, you have to remove the entire dash assembly to include instrument cluster and infotainment system in order to screw this into the cubby. The cubby on this model is actually apart of the entire upper dash panel and cannot be removed separately as the instructions state.
I decided I'd give the adhesive pad a try until I bought some self tapping screws but the mount is not contoured like my cubby, therefore it badly rocks.
I don't recommend this to anyone with a 2021 Silverado WT unless they want to spend over 3 hours installing this.
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Reviewed in the United States on May 8, 2026
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