---
product_id: 646829551
title: "AIYIMA Upgrade A04 TPA3251 Power Amplifier 2.0 CH mini HiFi Amplifiers 175W * 2 Class D Integrated Amp Digital Audio Amplifier for Home Audio Speaker with treble control"
brand: "aiyima"
price: "¥904"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/646829551-aiyima-upgrade-a04-tpa3251-power-amplifier-2-0-ch-mini
store_origin: JP
region: Japan
---

# TPA3251+NE5532 low distortion chips 175W x 2 output power Adjustable treble control AIYIMA Upgrade A04 TPA3251 Power Amplifier 2.0 CH mini HiFi Amplifiers 175W * 2 Class D Integrated Amp Digital Audio Amplifier for Home Audio Speaker with treble control

**Brand:** aiyima
**Price:** ¥904
**Availability:** ❌ Out of Stock

## Summary

> 🎧 Elevate your sound game—small amp, massive impact!

## Quick Answers

- **What is this?** AIYIMA Upgrade A04 TPA3251 Power Amplifier 2.0 CH mini HiFi Amplifiers 175W * 2 Class D Integrated Amp Digital Audio Amplifier for Home Audio Speaker with treble control by aiyima
- **How much does it cost?** ¥904 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/646829551-aiyima-upgrade-a04-tpa3251-power-amplifier-2-0-ch-mini)

## Best For

- aiyima enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Versatile:** Sleek, minimalist design fits any setup and supports both RCA and 3.5mm inputs for seamless connectivity.
- • **Crystal-Clear Audio:** Advanced TPA3251+NE5532 chips ensure ultra-low distortion and pristine sound clarity.
- • **Cinema-Quality Vibes:** Transforms your room into a personal theater with deep bass and clear highs that captivate every listener.
- • **Powerhouse Performance:** Delivers a robust 175W per channel to fill your space with rich, immersive sound.
- • **Tailored Sound Experience:** Fine-tune your highs with precision treble control for a perfectly balanced audio profile.

## Overview

The AIYIMA Upgrade A04 is a compact yet powerful 2.0 channel Class D amplifier featuring dual 175W output, advanced TPA3251+NE5532 chips for low distortion, and adjustable treble control. Designed for home audio enthusiasts, it supports 4Ω-8Ω speakers and multiple input options, delivering cinema-quality sound in a sleek, minimalist package.

## Description

chipset: TPA3251+NE5532 Replaceable operational amplifier chips: RT3609SM, OPA2604, OPA2134, LM4562, JRC5532, OP275GSZ, OPA1612, etc. Distortion: 0.01% Signal-to-noise ratio: 108dB A weight High and low pitch: low tones ± 14dB treble ± 8dB Input Sensitivity: 0.87V Speaker Impedance: 4-8Ω Output power: 175 W 4 Ω at 36 V Input mode: RCA/3.5 Supported equipment: decoder, preamp, computer, CD, mobile phone, mp3, etc. Output mode: 2.0 passive speakers + aux Working power supply: 24-36V Pack Size:167*117*36 Product net weight: 640 g Package includes: 1*A04 high-power amplifier, 1*36V6A power supply, 1*manual.

## Features

- Superior sound quality: The upgraded version of the A04 mini power amplifier uses powerful TPA3251+NE5532 chips, which have less distortion and low power consumption to achieve true high-quality sound quality. The treble is made clear, while the bass is smooth and pure, making the sound clear and rich.
- Small & Mighty: AIYIMA A04 2.0 power amplifier itself is very compact, but has a powerful impact, the maximum output power can reach 172W x 2(4Ω), it supports driving 4Ω - 8Ω speakers, very suitable for small/medium rooms (with 36V6A power supply).
- Two input methods: Mini stereo power amplifier has RCA/3.5mm input, which can freely switch between channel input, compatible with various media devices, and can be connected to decoders, preamps, computers, CDs, mobile phones, mp3s, etc.
- Well built: classic minimalist design, compact, sturdy, lightweight home hi-fi amplifier. Increase the high and low pitch, through the arrangement of high and low tones, the sound is delicate, the shocking auditory effect makes you feel like you are in a cinema, use it until you achieve the best experience.
- You get: 1*A04 high-power amplifier, 1*36V6A power supply, 1*manual. If you have any problems during the warranty period, contact the AIYIMA service center.

## Images

![AIYIMA Upgrade A04 TPA3251 Power Amplifier 2.0 CH mini HiFi Amplifiers 175W * 2 Class D Integrated Amp Digital Audio Amplifier for Home Audio Speaker with treble control - Image 1](https://m.media-amazon.com/images/I/517e3xNxIxL.jpg)
![AIYIMA Upgrade A04 TPA3251 Power Amplifier 2.0 CH mini HiFi Amplifiers 175W * 2 Class D Integrated Amp Digital Audio Amplifier for Home Audio Speaker with treble control - Image 2](https://m.media-amazon.com/images/I/61+9CRhjV9L.jpg)
![AIYIMA Upgrade A04 TPA3251 Power Amplifier 2.0 CH mini HiFi Amplifiers 175W * 2 Class D Integrated Amp Digital Audio Amplifier for Home Audio Speaker with treble control - Image 3](https://m.media-amazon.com/images/I/71YMX58nzfL.jpg)
![AIYIMA Upgrade A04 TPA3251 Power Amplifier 2.0 CH mini HiFi Amplifiers 175W * 2 Class D Integrated Amp Digital Audio Amplifier for Home Audio Speaker with treble control - Image 4](https://m.media-amazon.com/images/I/61TpKtqhhrL.jpg)
![AIYIMA Upgrade A04 TPA3251 Power Amplifier 2.0 CH mini HiFi Amplifiers 175W * 2 Class D Integrated Amp Digital Audio Amplifier for Home Audio Speaker with treble control - Image 5](https://m.media-amazon.com/images/I/61bqLFXzo8L.jpg)

## Frequently Bought Together

- AIYIMA 1PCS A04 2.0/2.1 Desktop Amplifier tpa3251+ne5532 175w*2 with Treble and bass Adjustment HiFi Amplifier RCA/3.5mm Input Home Speaker System
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- Fosi Audio BT20A Pro Bluetooth 5.0 Amplifier 300W x2 TPA3255 2 Channel Mini Class D Integrated Home Audio Outdoor Stereo Amp Receiver for Speakers Supports 24-48V with Bass Treble Control

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**Shop now:** [https://www.desertcart.jp/products/646829551-aiyima-upgrade-a04-tpa3251-power-amplifier-2-0-ch-mini](https://www.desertcart.jp/products/646829551-aiyima-upgrade-a04-tpa3251-power-amplifier-2-0-ch-mini)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-25*