Please provide a link to Wuzhi App, since there is no manual. Is there any?

Download link for Wuzhi Audio APP for Android mobile phones: http://www.qingdaowuzhi.cn/appdownload/Wuzhi_Audio.apk For Apple iOS mobile phones, please search "wuzhi audio" in Apple App Store to download and install.

There are two versions of these. does it use tpa3251 or tpa3255? what is the minium supply voltage?

Using tpa3251, the minimum supply voltage is 12V DC, and the current should be greater than or equal to 10A.

will this amp work without the app. Or do you have to have the app for it to work?

I did download the app and ran it once. Never clicked on it again. Seems to be a bluetooth amp so you pair with it and it doesn't need an app. It does sound pretty great. You can easily talk with someone while extremely loud music is playing. I have low-end Klipsh bookshelf speakers and a Polk 10 subwoofer.

Could I run two 5.25" woofers at 2 Ohm well/safely (paired in parallel), or do a series at 8 Ohm? Woofers have a rating of RMS 50W/MAX 100W at 4Ohm.

The subwoofer one way can support 2 ohms, but the stereo there is a minimum of 3 ohms, otherwise the amplifier is easily protected. Speaker resistances greater than required are fine, mainly the lower limit. You can connect speakers in series and in parallel.

MakerHawk Bluetooth Power Amplifier Board Stereo - HiFi 2.1 Channel 2X220W+350W Bluetooth 5.1 Audio Amplifier Board 12-38V Subwoofer Control with AUX/Bluetooth/USB Flash Drive

MakerHawk Bluetooth Power Amplifier Board Stereo - HiFi 2.1 Channel 2X220W+350W Bluetooth 5.1 Audio Amplifier Board 12-38V Subwoofer Control with AUX/Bluetooth/USB Flash Drive

Product ID: 454372981

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Details

Voltage
32 Volts
Manufacturer
MakerHawk
Maximum Supply Voltage
38 Volts
Minimum Supply Voltage
12 Volts (DC)
Mounting Type
Surface Mount

📶Bluetooth 5.1 with 15m range

🔊790W total output power

🛡️Multi-layer safety protection

Description

🎶 Power your space with precision and style—unleash the MakerHawk sound revolution!

ROBUST SAFETY FEATURES - Built-in short circuit, overcurrent, overheating, and anti-static protections keep your investment safe and sound.
SEAMLESS WIRELESS CONNECTIVITY - Bluetooth 5.1 ensures ultra-stable streaming up to 15 meters, plus AUX, USB, and U-disk inputs for ultimate versatility.
IMMERSIVE HI FI SOUND EXPERIENCE - Crystal-clear 2.1 channel stereo with 2x220W + 350W subwoofer power delivers room-filling audio that commands attention.
SMART APP CONTROL CUSTOMIZATION - Personalize your sound with app-based volume, playlist, and sleep timer controls—shake your phone to switch tracks effortlessly.
CUTTING EDGE TEXAS INSTRUMENTS TECH - Powered by dual TPA3251D2 chips for ultra-low distortion and high-efficiency Class D amplification—hear every detail like a pro.

The MakerHawk Bluetooth Power Amplifier Board is a high-performance 2.1 channel Class D amplifier delivering a combined 790W output. Featuring Bluetooth 5.1 for stable wireless streaming up to 15 meters, multiple input options (AUX, USB, U-disk), and app control for personalized audio settings. Equipped with dual Texas Instruments TPA3251D2 chips for superior sound clarity and advanced safety protections, this amplifier is designed for audiophiles seeking powerful, versatile, and reliable sound enhancement.

Specifications

ASIN	B0B3D4786D
Best Sellers Rank	#210,806 in Electronics ( See Top 100 in Electronics ) #358 in Hi-Fi Amplifiers
Brand	MakerHawk
Brand Name	MakerHawk
Country of Origin	China
Customer Reviews	4.3 out of 5 stars 97 Reviews
Included Components	1 electronic component amplifier
Manufacturer	MakerHawk
Maximum Supply Voltage	38 Volts
Minimum Supply Voltage	12 Volts (DC)
Model Number	ZK-AS21
Mounting Type	Surface Mount
Number of Channels	3
Output Power	790 Watts
Package Type Name	box
Specification Met	RoHS
Supply Current	10 Amps
Voltage	32 Volts

Reviews

D**M

Good

Very good

17.12.2025

S**R

Good

23.08.2025

S**Y

👍👍

Good product One problem no power supply inside

11.03.2026

N**E

Way to expensive!

I don't understand why these cheap Chinese amplifiers, without any proper body or power supply, are so expensive. they not even a brand like Sony, Sanyo etc.

14.11.2023

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