---
product_id: 175023905
title: "NJW0281/NJW0302 2SA1930/2SC5171 450W+450W Stereo amplifier Finished board"
brand: "jolooyo"
price: "$223.25"
currency: USD
in_stock: true
category: "Jolooyo"
url: https://www.desertcart.us/products/175023905-njw0281-njw0302-2sa1930-2sc5171-450w-450w-stereo-amplifier-finished-board
store_origin: US
region: United States of America
---

# 2x450W high power output Wide DC power supply 45V-85V Premium 1.6mm double-sided PCB NJW0281/NJW0302 2SA1930/2SC5171 450W+450W Stereo amplifier Finished board

**Brand:** jolooyo
**Price:** $223.25
**Availability:** ✅ In Stock

## Summary

> 🎶 Amplify your audio game with power and precision!

## Quick Answers

- **What is this?** NJW0281/NJW0302 2SA1930/2SC5171 450W+450W Stereo amplifier Finished board by jolooyo
- **How much does it cost?** $223.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/175023905-njw0281-njw0302-2sa1930-2sc5171-450w-450w-stereo-amplifier-finished-board)

## Best For

- jolooyo enthusiasts

## Why This Product

- Trusted jolooyo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Reliable & Stable:** Point grounding PCB layout ensures minimal noise and exceptional transient response for all music genres.
- • **Precision Engineering:** Utilizes ±1% accuracy five-ring metal film resistors for crystal-clear audio fidelity.
- • **Premium Build Quality:** Crafted on a 1.6mm thick, double-sided PCB with 2oz copper and spray tin for superior current flow and durability.
- • **Powerhouse Performance:** Delivers a robust 2x450W output for immersive, room-filling sound.
- • **Audiophile-Grade Soundstage:** Experience a wide dynamic range with open sound fields and rich, three-dimensional audio depth.

## Overview

The NJW0281/NJW0302 2SA1930/2SC5171 stereo amplifier board delivers a powerful 2x450W output at 4 ohms with a wide DC power supply range of 45V-85V. Built on a premium 1.6mm double-sided PCB with thick copper layers and precision metal film resistors, it ensures low noise, excellent transient response, and a rich, immersive soundstage ideal for high-fidelity home audio setups.

## Description

Description: Original NJW0281/NJW0302 and 2SA1930/2SC5171 are used. The resistor uses a five-ring metal resistor, and the main loop uses a five-ring metal film resistor with an accuracy of ±1% to ensure a good signal-to-noise ratio. The PCB adopts 1.6mm thick double-sided plate, 2.0oz thick copper, and spray tin process to ensure good current performance. First-class PCB quality. The layout of the entire circuit board layout is quite rigorous and reasonable. The overall PCB trace uses a point grounding method. The power amplifier board is stable and reliable, and has a large output power; the sound is mellow and the sound field is open. Strong sense of three-dimensional, low-frequency solid and powerful, signal-to-noise ratio is very good, a wide dynamic range; clear details, excellent transient response, playing all kinds of music are comfortable, in the family's playback environment has a very good performance. Power supply: DC+-(45V-85V) Power: 2X450W(+-85V 4Ohms) Board size: 259*73MM Package: 1 pc NJW0281/NJW0302 2SA1930/2SC5171 450W+450W Stereo amplifier Finished board

## Features

- Power supply: DC - (45V-85V)
- Power: 2X450W (+-85V 4 Ohms)
- PCB size: 259 * 73MM

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BLQYZHG |
| Date First Available | January 11, 2015 |
| Is Discontinued By Manufacturer | No |
| Output Wattage | 450 Watts |

## Images

![NJW0281/NJW0302 2SA1930/2SC5171 450W+450W Stereo amplifier Finished board - Image 1](https://m.media-amazon.com/images/I/5147UlOQ64L.jpg)
![NJW0281/NJW0302 2SA1930/2SC5171 450W+450W Stereo amplifier Finished board - Image 2](https://m.media-amazon.com/images/I/51rvjYD61WL.jpg)
![NJW0281/NJW0302 2SA1930/2SC5171 450W+450W Stereo amplifier Finished board - Image 3](https://m.media-amazon.com/images/I/511efUaGdFL.jpg)
![NJW0281/NJW0302 2SA1930/2SC5171 450W+450W Stereo amplifier Finished board - Image 4](https://m.media-amazon.com/images/I/51jJkk8pAPL.jpg)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-13*