---
product_id: 452734963
title: "Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Sound Amplifier Board"
brand: "taidacent"
price: "NT$7002"
currency: TWD
in_stock: true
reviews_count: 5
category: "Taidacent"
url: https://www.desertcart.tw/products/452734963-taidacent-opa541-op-amp-high-power-monolithic-operational-amplifier-5a
store_origin: TW
region: Taiwan
---

# ±40V max supply voltage Compact 96x64x41mm size 5A continuous output current Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Sound Amplifier Board

**Brand:** taidacent
**Price:** NT$7002
**Availability:** ✅ In Stock

## Summary

> ⚡ Amplify your power, amplify your potential!

## Quick Answers

- **What is this?** Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Sound Amplifier Board by taidacent
- **How much does it cost?** NT$7002 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/452734963-taidacent-opa541-op-amp-high-power-monolithic-operational-amplifier-5a)

## Best For

- taidacent enthusiasts

## Why This Product

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

## Key Features

- • **Precision Gain Control:** Adjustable gain from 3 to 33× via simple resistor swaps, empowering tailored amplification.
- • **Powerhouse Voltage Range:** Operates seamlessly from ±10V up to ±40V for ultimate flexibility in high-power applications.
- • **Robust 5A Output Current:** Delivers continuous 5A current, perfect for driving motors, speakers, and transformers with confidence.
- • **Built-in Protection Circuitry:** User-configurable current limiting safeguards your amplifier and load from faults, ensuring reliability.
- • **Versatile Waveform Amplification:** Effortlessly amplifies sine, triangle, and square waves up to 100kHz, ideal for diverse signal needs.

## Overview

The Taidacent OPA541 is a high-power monolithic operational amplifier module designed for professional audio and motor drive applications. It supports a wide dual supply voltage range up to ±40V and delivers continuous output currents up to 5A. With adjustable gain settings and built-in current limiting, it offers precise, reliable amplification of various waveforms including sine, triangle, and square waves up to 100kHz. Its compact form factor and robust heat dissipation design make it a versatile choice for demanding high-current amplification tasks.

## Description

Frequently Asked Questions Q: Is the magnification fixed? How to adjust? A: The default magnification of the module is 33 times. If you need to adjust the magnification, you can only replace the resistor on the board. The resistance package is 0805. The calculation formula is given in the parameter details. Q: Can the module directly drive the coil? A: The module can drive the coil, but the coil internal resistance is required to be greater than 4 ohms. If it is less than 4 ohms, a series power resistance is required, otherwise the module may be damaged. Q: Can the module amplify square wave or pulse? What is the module bandwidth? A: The module can amplify low-frequency square waves or pulses. Because it is an audio amplifier, the total bandwidth is not high. Signals within 100K can be amplified. The module is compatible with DC input. Q: Can the module be enlarged 1: 1? That is to only amplify the current? A: The module can support 1: 1 amplification. You need to modify the resistance configuration magnification yourself. It is not recommended to directly configure the op amp follow mode. This is easy to self-excitation. It is recommended to change to resistance attenuation first, and then operation amplification. The total gain is 1 That's it. Q: Why the input sine wave output is square wave? What is the output current? What is the output power? A: Generally speaking, the input signal is too large, and the op amp is amplified to the cut-off distortion, which is the square wave, or the supply voltage is not enough. Can reduce the input signal and increase the supply voltage to solve. The output current of the module is determined by the output voltage and load. L = Uout / R. Similarly, the output power P = U * 1 is also determined by the output voltage and load resistance. Heat dissipating silicone grease and air cooling can be added at high power input.

Review: Comes with a schematic and contact info. The sch. routing is correct but not some of the values. This device is DC coupled throughout. Easy to mount. Nice heat-sink size for forced air cooling or lower power natural convection. Layout looks very good. The terminals are not that good as it's hard to get enough torque on the screws due to the head design but I know good ones are spendy so they will do. In my case I'm using it as a buffer for my workbench so I removed R5 (a shunt), set the gain to unity and used SMA P1 as an input. Feeding it with +/- 15 Volt at 4 Amps from two supplies. I've used it to buffer my function generator and it's fine well past 100 kHz in sine. Seems happy with inductive loads. I tried speakers, motors, transformers and everything is well behaved. Buffering me bench supply shows the DC offset is nil and tracking is near perfect. Output noise is very low---less than 2 mV rms when sourced with my linear supply running 10 Volts.
Review: Worked well for driving coils at about 10hz. Note that voltage rail selection will significantly impact thermal load. I was able to use +/- 5V for my application, which significantly reduced thermal buildup compared to +/- 15V and is much lower than what the documentation says should work. With the +/-15V rails and without the fan, the thermal limit appeared to be around 1.2Arms into my particular low-impedance load. Also note that the schematic they send with the device is not accurate. I have attached a marked up version with the observed values of the circuits. The board is DC coupled on both op-amps. If I did my math right, the first stage offers an adjustable voltage gain of 1-11 and can be bypassed. The second stage offers a fixed voltage gain of 3. This allows a total gain range of 3-33.

## Features

- Name: OPA541 High Voltage High Current Power Amplifier; Size: 96mm*64mm*41mm (length, width, height); Supply voltage range: ±10V~±40V
- The OPA541 module is a power operational amplifier capable of operating with a power supply up to 40V and providing continuous output current up to 5A. The internal current limiting circuit can be controlled by the user using a single external resistor to protect the amplifier and load from fault conditions.
- Suitable for motor-driven speaker drive, transformer drive and audio amplifier. It can also amplify triangle wave, sine wave and square wave signals.
- The power consumption of the module is large, and the power supply requires a certain margin. It is recommended to use a power supply with a current driving capacity greater than twice the output current. The module can only be powered by dual power supplies. In order to avoid unnecessary interference, it is recommended to use a linear power supply, the power supply should not exceed plus or minus 40V.
- The output signal is recommended to use the SMA to BNC cable to directly observe the effect of the oscilloscope. Poor contact or poor quality wires may cause signal attenuation or excessive noise.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07D8VP8CQ |
| Best Sellers Rank | 208,334 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1,375 in Hi-Fi Amplifiers |
| Guaranteed software updates until | unknown |
| Item model number | OPA541 |
| Manufacturer | Taida |
| Package Dimensions | 11.43 x 10.92 x 3.56 cm; 227 g |

## Product Details

- **Manufacturer:** Taida
- **Maximum supply voltage:** 40 Volts
- **Minimum supply voltage:** 10 Volts
- **Mounting type:** Surface Mount
- **Voltage:** 40 Volts

## Images

![Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Sound Amplifier Board - Image 1](https://m.media-amazon.com/images/I/71zH9kIGOgL.jpg)
![Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Sound Amplifier Board - Image 2](https://m.media-amazon.com/images/I/61ciO8cuAnL.jpg)
![Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Sound Amplifier Board - Image 3](https://m.media-amazon.com/images/I/61t6EWpdjrL.jpg)
![Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Sound Amplifier Board - Image 4](https://m.media-amazon.com/images/I/61scZLmep9L.jpg)
![Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Sound Amplifier Board - Image 5](https://m.media-amazon.com/images/I/612pUk2iWuL.jpg)

## Questions & Answers

**Q: Can the amplifier be used at DC? I want to use it to drive an electromagnet.**
A: As sold, no.  There is a DC blocking capacitor on the input to the pre-amp stage and between the pre-amp and the OPA541 power amp.

**Q: Where can the specifications for this amplifier be found?**
A: It has the specification in the package. If you have any problem after you buy it, you can contact us through the order detail.

**Q: What is the max frequency that this unit can amplify ?**
A: Within 100KHz

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***T on 30 December 2021*

Comes with a schematic and contact info. The sch. routing is correct but not some of the values. This device is DC coupled throughout. Easy to mount. Nice heat-sink size for forced air cooling or lower power natural convection. Layout looks very good. The terminals are not that good as it's hard to get enough torque on the screws due to the head design but I know good ones are spendy so they will do. In my case I'm using it as a buffer for my workbench so I removed R5 (a shunt), set the gain to unity and used SMA P1 as an input. Feeding it with +/- 15 Volt at 4 Amps from two supplies. I've used it to buffer my function generator and it's fine well past 100 kHz in sine. Seems happy with inductive loads. I tried speakers, motors, transformers and everything is well behaved. Buffering me bench supply shows the DC offset is nil and tracking is near perfect. Output noise is very low---less than 2 mV rms when sourced with my linear supply running 10 Volts.

### ⭐⭐⭐⭐⭐ Review
*by R***O on 8 January 2026*

Worked well for driving coils at about 10hz. Note that voltage rail selection will significantly impact thermal load. I was able to use +/- 5V for my application, which significantly reduced thermal buildup compared to +/- 15V and is much lower than what the documentation says should work. With the +/-15V rails and without the fan, the thermal limit appeared to be around 1.2Arms into my particular low-impedance load. Also note that the schematic they send with the device is not accurate. I have attached a marked up version with the observed values of the circuits. The board is DC coupled on both op-amps. If I did my math right, the first stage offers an adjustable voltage gain of 1-11 and can be bypassed. The second stage offers a fixed voltage gain of 3. This allows a total gain range of 3-33.

### ⭐⭐⭐⭐⭐ Review
*by M***K on 16 February 2024*

Using this for a homemade PEMF machine. To drive the coil. The output signal is clean and noise free. High quality and expect it to last a long time. In my application will need a fan to keep it running cool.

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- Taidacent OPA541 OP AMP High Power Monolithic Operational Amplifier 5A Current High Voltage Audio Amplifier Board
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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-22*