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Description
Rockford Fosgate Punch PBR500X1 - Mono AmplifierThe PBR500X1 is a 500 Watt amplifier with Boosted Rail Technology, allowing it to be compact and efficient while providing big power. This amp is great for smaller stealth installations, motorcycles and recreational vehicles. 12dB octave Butterworth crossover MOSFET output stage High level inputs Ultra compact chassis Variable 4 6 volt hi level DC offset voltage input turn on control Number of Channels: 1 Rated Power (RMS Continuous Power): 170 Watts
The PBR500X1 is a 500 Watt amplifier with Boosted Rail Technology, allowing it to be compact and efficient while providing big power. This amp is great for smaller stealth installations, motorcycles and recreational vehicles.
- 12dB/octave Butterworth crossover
- MOSFET output stage
- High level inputs
- Ultra compact chassis
- Variable 4-6 volt hi level DC offset voltage input turn-on control
- Number of Channels: 1
- Rated Power (RMS Continuous Power): 170 Watts x 1 @ 4-Ohm
- 300 Watts x 1 @ 2-Ohm
- 500 Watts x 1 @ 1-Ohm
- Total Power (Sum of Rated Power): 500 Watts
- Bridgeable: No
- Efficiency (average): 75% @ 4-Ohm
- 75% @ 2-Ohm
- 65% @ 1-Ohm
- Crossover Controls: 35Hz - 250Hz Low Pass @ 12dB/Octave Butterworth
- Signal Input: High/Low Input Switch
- High/Low Level Input: 4-Pin Harness
- High-Level Sensitivity: Variable DC offset sensitivity
- Power Input Connector: Block Harness
- Power Wire Gauge: 10 AWG
- Speaker Output Connector: 4-Pin Harness
- Speaker Wire Gauge: Harness 12 AWG
- Heat Sink Type: Extruded aluminium
- Cooling: Convection
- Remote Controls: Optional PEQ provides 0dB to +18dB @ 45Hz
- Visual Indicators: Power/Protect, BRT (Boost)
- Circuit Topology Class: Class-BR
- Frequency Response: 20Hz-250Hz +/-3dB
- Dimensions (HxWxL): 1.53" x 4.25" x 8.2"
- 3.90cm x 17.2cm x 20.82cm)
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 11 reviews
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Product Reviews
★★★★★ 5
Great taste without the sugar crash
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
I picked this up because I wanted an energy drink that wouldn’t be loaded with sugar, and this one honestly surprised me. The flavor is really light and refreshing—not too sweet or overpowering like some other energy drinks.
I’ve been using it mainly in the mornings or when I need a quick boost, and it definitely helps with energy and focus without making me feel jittery. One thing I really like is that there’s no heavy aftertaste, which I’ve noticed with other sugar-free drinks.
Pros:
Zero sugar but still tastes good
Smooth, not too strong or artificial
Gives a noticeable energy boost
Cons:
Might be a little too mild if you like very strong flavors
The price can add up if you drink them often
Overall:
I’d recommend this if you want a cleaner-tasting energy drink without all the sugar. It’s easy to drink and does what it’s supposed to.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Great!
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
Great price for this pack, saves money in the long run! The flavor is great and love the carbonation. The sugar free flavor is my favorite.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
My go-to energy drink for years, no crashes or headaches
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
Consistent energy, good taste, and no weird side effects
✔️ Sugar-free with no crash
✔️ No headaches or jittery feeling
✔️ Clean, smooth energy boost
✔️ Good flavor without being overly sweet
✔️ Reliable enough for long-term daily use
✔️ Subscription makes it easy to keep stocked
I’ve been buying Monster Zero Ultra for years and have it on subscription. It’s the one energy drink I consistently go back to. I've tried most others and they all leave me feeling weird.
I actually feel a noticeable energy boost from it, but without the downsides I’ve had with other drinks. No headaches, no weird jittery feeling, and no crash later on.
The flavor is also solid (this one and Ultra Violet are my go tos') , not overly sweet, and easy to drink regularly. I only buy sugar-free energy drinks, and this checks that box without sacrificing taste. I limit myself to one a day after the gym and water the rest of the day.
After trying a lot of different brands, this is the one that’s stayed consistent for me, which is why I’ve kept it on subscription.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Monster
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
Great price. Cheaper than the store. Zero sugar is a game changer!
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Reviewed in the United States on May 15, 2026
★★★★★ 4
Great Drink for Dads
Flavor Name: Zero Ultra, Size: 16 Fl oz (Pack of 15)
It tastes great and it is sugar free.
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Reviewed in the United States on May 8, 2026