--- product_id: 810835617 title: "Zapco ST-5B 5-Channel Class AB Full Range Amplifier" brand: "zapco" price: "HK$4012" currency: HKD in_stock: true category: "Zapco" url: https://www.desertcart.hk/products/810835617-zapco-st-5b-5-channel-class-ab-full-range-amplifier store_origin: HK region: Hong Kong --- # 400W max subwoofer output 5 channels, full-range power Variable gain & crossover control Zapco ST-5B 5-Channel Class AB Full Range Amplifier **Brand:** zapco **Price:** HK$4012 **Availability:** ✅ In Stock ## Summary > 🎵 Elevate your ride’s sound game with Zapco’s powerhouse precision! ## Quick Answers - **What is this?** Zapco ST-5B 5-Channel Class AB Full Range Amplifier by zapco - **How much does it cost?** HK$4012 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/810835617-zapco-st-5b-5-channel-class-ab-full-range-amplifier) ## Best For - zapco enthusiasts ## Why This Product - Trusted zapco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Sound Tuning:** Variable input gain, full/LP/HP crossover, and adjustable bass boost for tailored audio experiences. - • **Compact Pro-Grade Design:** Slim 7.17"x2.05"x15" footprint fits tight spaces without compromising professional performance. - • **Flexible System Integration:** Stable into 4Ω bridged or 2Ω stereo loads with versatile bridged outputs for custom setups. - • **Powerhouse 5-Channel Output:** Delivers 4x70W @4Ω + 1x250W subwoofer or 4x100W @2Ω + 1x400W for booming sound. - • **Crystal-Clear Audio Fidelity:** Advanced MOSFET tech with <0.2% THD, >90dB SNR, and >45dB channel separation ensures pristine sound. ## Overview The Zapco ST-5B is a 5-channel Class AB amplifier engineered for versatile, high-fidelity car audio setups. It delivers up to 400 watts on the subwoofer channel and 100 watts on each full-range channel at 2 ohms, featuring advanced MOSFET power supply technology for ultra-low distortion and high signal clarity. Compact and flexible, it supports multiple input types and precise tuning controls, making it the go-to choice for audiophiles seeking professional-grade sound in a sleek package. ## Description ST-5B 5 Ch. Full Range Class AB Amplifier Features and Functions 5-Channel, Class-AB Full Range Amplifier Stable into 4 ohms bridged or 2 ohms stereo load MOSFET power supply RCA and OEM speaker level input Variable Inputs Gain Control Variable FULL / LP / HP Electronic Crossover Variable Bass Boost Specifications Power @ 4Ω: 4 x 70 + 1 x 250 watts Power @ 2Ω: 4 x 100 + 1 x 400 watts Power @ 4Ω Bridged: 2 x 180 + 1 x 400 (2Ω) THD @ Rated Power 90dB Channel separation > 45dB Frequency Response 10Hz to 30,000Hz ±1dB Input Sensitivity .25v to 5v Dimensions: 7.16" (W) x 2.04" (H) x 15" (L) ## Features - 5-CHANNEL CLASS-AB AMPLIFIER: Full-range amplifier delivers 4 x 70 watts at 4 ohms plus 1 x 250 watts subwoofer channel, or 4 x 100 watts at 2 ohms plus 1 x 400 watts for powerful, versatile audio performance. - FLEXIBLE POWER CONFIGURATION: Stable into 4 ohms bridged or 2 ohms stereo load with bridged output of 2 x 180 watts plus 1 x 400 watts at 2 ohms for maximum flexibility in system design. - ADVANCED MOSFET POWER SUPPLY: Features high-efficiency MOSFET technology with less than 0.2% THD at rated power, greater than 90dB signal-to-noise ratio, and greater than 45dB channel separation for clean, distortion-free sound. - VERSATILE INPUT AND TUNING OPTIONS: Equipped with RCA and OEM speaker level inputs, variable input gain control from 0.25v to 5v, variable full/LP/HP electronic crossover, and adjustable bass boost for precise sound customization. - COMPACT DIMENSIONS: Measures 7.17 inches wide x 2.05 inches high x 15 inches long overall, making it easy to install in tight spaces while delivering professional-grade amplification with 10Hz to 20KHz frequency response. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0GHPTN819 | | Best Sellers Rank | #690,139 in Electronics ( See Top 100 in Electronics ) #1,534 in Car Multichannel Amplifiers | | Brand Name | Zapco | | Item Dimensions | 15 x 7.16 x 2.04 inches | | Item Weight | 10 Pounds | | Manufacturer | ZAPCO | | Maximum Output Power | 400 | | Model | ST-5B | | Number of Channels | 5 | | Output Power | 400 Watts | | Part Number | ST-5B | | Unit Count | 1.0 Count | | Warranty Description | 1 Year Warranty | ## Product Details - **Brand:** Zapco - **Item dimensions L x W x H:** 15 x 7.16 x 2.04 inches - **Manufacturer:** ZAPCO - **Number of Channels:** 5 - **Output Power:** 400 Watts ## Images ![Zapco ST-5B 5-Channel Class AB Full Range Amplifier - Image 1](https://m.media-amazon.com/images/I/51ktq8yjmpL.jpg) ![Zapco ST-5B 5-Channel Class AB Full Range Amplifier - Image 2](https://m.media-amazon.com/images/I/51bE6uSZipL.jpg) ![Zapco ST-5B 5-Channel Class AB Full Range Amplifier - Image 3](https://m.media-amazon.com/images/I/510cpWodGqL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hk/products/810835617-zapco-st-5b-5-channel-class-ab-full-range-amplifier](https://www.desertcart.hk/products/810835617-zapco-st-5b-5-channel-class-ab-full-range-amplifier) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-07-16*