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Item #:
4620329
ST-4X II - Zapco 4-Channel 480W RMS Class AB Amplifier
Item #:
4620329
NZD 668
Price Details
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Imported from USA store
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Order now and get it around Saturday, August 29
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Upgrade your car audio system with the ZAPCO ST-4X II amplifier and enjoy outstanding performance and sound quality on the road.
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What Stands Out
Powerful Output
Delivers a robust 480W RMS across four channels, ensuring excellent sound clarity and volume for a dynamic audio experience that suits both casual listeners and audiophiles.
Class AB Design
Employs Class AB technology to improve efficiency while minimizing distortion, providing high fidelity sound quality that enhances the listening experience in any vehicle.
Versatile Compatibility
Designed to seamlessly integrate with various audio systems, making it an ideal choice for upgrading car audio setups, ensuring compatibility without compromising performance.
Product Details
- 4-channel Class AB amplifier with a power of 320W RMS
- Features full range, Class AB, RCA and speaker level inputs, variable input gain control, variable electronic crossover, and auto-on with speaker level inputs
- Specifications include power of 4 x 70 watts @ 4Ω, THD @ rated power 95dB, channel separation >60dB, and frequency response of 15Hz to 30KHz ±1dB
- Input sensitivity ranges from .25v to 5v
- Compact chassis with dimensions of 160(W) x 52(H) x 300(L) mm
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 70 Watts |
| Maximum Output Power | 380 watts |
| Item Dimensions | 11.9 x 6.3 x 2 inches (30.2 x 16 x 5.1 cm) |
| Material Type | Metal |
| Specification Met | FCC |
| Manufacturer | Zapco |
| Model | ST 4X II |
| Brand Name | Zapco |
| UPC | 701882310354 |
| Unit Count | 1.0 Count |
| Item dimensions L x W x H | 11.9 x 6.3 x 2 inches (30.2 x 16 x 5.1 cm) |
| Brand | Zapco |
Who Should Buy?
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Audio Enthusiasts
Perfect for users looking for high-quality sound and detailed audio performance in their vehicle audio system.
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Professional Installers
Ideal for audio professionals seeking a reliable amplifier to incorporate into custom car audio installations.
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Multi-Speaker Setups
Best suited for users planning to drive multiple speakers, requiring a powerful, multi-channel amplifier.
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Budget Shoppers
Not suitable for users seeking a low-cost amplifier, as it is on the higher end of the price spectrum.
Product Description
ST-4X II - Zapco 4-Channel 480W RMS Class AB Amplifier
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the power output of the ST-4X II - Zapco 4-Channel Amplifier?
Answer: The ST-4X II produces a robust 480W RMS across its four channels, providing ample power for your audio system. This high power output ensures that your speakers operate efficiently, delivering clear and undistorted sound even at higher volumes. Users can enjoy a rich audio experience whether listening to music on the road or at home, ensuring every note is delivered with precision. -
Question:
What type of speakers is the ST-4X II compatible with?
Answer: The ST-4X II is designed to work seamlessly with various speaker types, including coaxial, component, and subwoofers. With its high-powered output, it can drive a wide range of impedance levels, allowing users to tailor their audio setup. For optimal performance, pairing it with high-efficiency speakers can enhance sound quality, making it suitable for both casual listeners and audiophiles. -
Question:
Is the ST-4X II suitable for home audio systems?
Answer: Yes, the ST-4X II is versatile enough for both car and home audio systems. Its Class AB design provides high fidelity sound with minimal distortion, making it an excellent choice for home theaters or sound systems. Whether you're binge-watching your favorite series or enjoying a music session, this amplifier enhances the overall audio experience, making it a perfect addition. -
Question:
What features does the ST-4X II include for sound customization?
Answer: The ST-4X II comes equipped with various sound customization features such as adjustable crossover settings and bass boost options. These features allow users to fine-tune their audio output to their specific preferences or the musical genre they are listening to. This level of customization can result in a more enjoyable listening experience, particularly for those who love experimenting with sound settings. -
Question:
How does the ST-4X II compare to other amplifiers in its class?
Answer: The ST-4X II stands out in its class due to its exceptional build quality, high performance, and advanced technology features. Unlike many entry-level amplifiers, it delivers superior sound clarity and dynamic range. Users seeking competitive options will find that the ST-4X II not only delivers power but also precise audio reproduction, making it a preferred choice for sound enthusiasts. -
Question:
Can the ST-4X II be used with a subwoofer?
Answer: Absolutely! The ST-4X II can efficiently drive a subwoofer, providing deep bass response while maintaining clarity across the full audio spectrum. Users can set it up to provide dedicated power to a subwoofer channel. Adding a subwoofer enhances the overall audio experience, especially for music genres that emphasize bass, such as hip-hop or electronic. -
Question:
What installation options are there for the ST-4X II?
Answer: The ST-4X II offers flexible installation options suitable for both car and home settings. Users can choose to mount it on a flat surface or inside a housing unit for aesthetic purposes. With clear wiring instructions, the installation process can accommodate varying skill levels, allowing DIY enthusiasts to tackle the setup while also being installer-friendly for professionals. -
Question:
How does the Class AB design of the ST-4X II benefit sound quality?
Answer: The Class AB design of the ST-4X II provides a balance between the efficiency of Class D amplifiers and the superior sound quality commonly associated with Class A amps. This configuration minimizes distortion while offering a warm, rich sound. It ensures that all elements of the audio spectrum are well represented, resulting in a more immersive listening experience, beneficial for those who prioritize sound clarity. -
Question:
Are there any specific accessories needed for the ST-4X II?
Answer: While the ST-4X II can operate effectively on its own, having quality RCA cables, speaker wire, and a secure power source is recommended for optimal performance. These accessories help facilitate a clean installation, reducing noise interference and enhancing the overall audio quality. Users should also consider a cooling option if placed in a confined space to maintain optimal performance levels. -
Question:
Where can I buy the ST-4X II - Zapco 4-Channel 480W RMS Class AB Amplifier in New Zealand?
Answer: You can purchase the ST-4X II - Zapco 4-Channel 480W RMS Class AB Amplifier from Ubuy in New Zealand. Ubuy offers a variety of electronics, ensuring you have access to quality products directly. Additionally, they provide a convenient online shopping experience, making it easier to obtain this top-performing amplifier for your audio setup.
Zapco Multichannel Amplifiers Editorial Review
The Zapco ST-4X II 4-Channel 320W RMS Class AB Amplifier is a solid option for those in need of a powerful and durable amplifier. While there have been some reports of defective units, the majority of reviews praise the longevity and clarity of sound produced by the Zapco brand. Some customers have noticed a slight amount of noise, but overall the product has received positive reception.
Customer Reviews & Ratings
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Pros
- Powerful 320W RMS Class AB Amplifier
- Known for longevity and durability
- Clear sound quality
Cons
- Some reports of defective units during delivery
Platform Trust & Buyer Confidence
RA
Ranee
Verified buyer
“Paint ordered from USA, u buy got the product to me in New Zealand in approx a week”
22 July 2026 · via Trustpilot
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NordVPN
Verified buyer
“very speedy delivery,tracking info was superb-best experikence ever!!!”
24 June 2026 · via Trustpilot
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Nicholas
Verified buyer
“Love what I received and ordered found that usa clothes are more better quality and look better than the same clothes in my country but are harder to find here recommend ubuy 100%”
22 June 2026 · via Trustpilot
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Dneah
Verified buyer
“Product came earlier than expected (shipped from US to NZ), in about 3 weeks. No damages and product was exactly as advertised!”
15-Jul-26 · via Trustpilot
TS
Tania
Verified buyer
“Easy to order, easy to track and the product is great to use. Also, the person-to-person (not automated) phone call I got to confirm that I'd received the item was wonderful ??”
11-Jul-26 · via Trustpilot
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NZD 668
Order now and get it around Saturday, August 29
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- High-quality Class AB amplifier for component speakers in cars
- 320W RMS power output provides powerful and clean sound
- Advanced circuitry and high-quality components for excellent sound reproduction
- Four channels for connecting multiple speakers
- Compact size for easy installation in limited spaces
- Upgrade your car audio system for outstanding performance and sound quality
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