To the Seller, is the review correct, that the volume knob is not a master volume for the sub out?

The knobs, bass/treble/master, controls the Sub completely. Read the sub hook instructions carefully. For my example, Sony CS9 requires both the speaker's wires and amplifier's wires connect to the subwoofer on its back with the amp's sub out cable connecting to sub in. These connections ensure the sub and amp functioning as a whole unit.

Does it read normal usb flash drives like sandisk cruzer 128gb usb 2.0 flash drive?

[updated response] yes, it should work. tested it on a sandisk cruzer glide 64gb usb (2.0? not sure) works fine, not all but most (95%) the other usb drives i've test worked fine. there does seem to be an issue with some drives, like an old PNY drive (16GB USB 2.0) and/or how you format the disk, kinda works but songs will lag and pause for about 5 seconds then continue. i'm not sure if it has problems with the usb hardware version (e.g. 1.0 vs. 2.0 vs. 3.0), or the disk format (FAT vs. FAT32 vs. exFAT, **NTFS does not work**) or the USB disk size (their notes mention supporting up to 32GB). so for now i would recommend usb 3.0 or newer, 32GB, FAT32 format, i have tested all their supported (claimed) music file formats and they seem to work fine. (i mostly just use .mp3)

Seller, the bass & treble dials have no level marking so can you tell me: are they 0 to the left and +10 to the right, or, is it 0 straight up (aka 12

I assumed "straight up" was flat, i.e. +/-0db. It sounds good to me that way. Turning them to the left reducees bass/treble. Likewise, turning them to the right increases bass/treble, respectively. Hope this helps :-)

does this support aptx?

Hello. No, it doesn't support aptx.

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Douk Audio M1 PRO 320W Bluetooth Power Amplifier, 2 Channel Audio Amp, Wireless Receiver, for Home Stereo Speakers/Active Subwoofer, with Treble & Bass Control/U-Disk Music Player

Douk Audio M1 PRO 320W Bluetooth Power Amplifier, 2 Channel Audio Amp, Wireless Receiver, for Home Stereo Speakers/Active Subwoofer, with Treble & Bass Control/U-Disk Music Player

Product ID: 165525283

Details

Item dimensions L x W x H
12.13 x 10.04
Manufacturer
Douk Audio
Maximum Supply Voltage
35 Volts (DC)
Minimum Supply Voltage
19 Volts
Voltage
35 Volts

🎵Supports lossless audio formats

📶Bluetooth 5.0 wireless input

🔊320W max output power

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Details

Item dimensions L x W x H
12.13 x 10.04
Manufacturer
Douk Audio
Maximum Supply Voltage
35 Volts (DC)

Description

🎧 Elevate your sound game — power, precision, and style in one sleek amp!

POWERHOUSE PERFORMANCE - Delivers a robust 160W per channel to energize your passive speakers with cinematic bass impact.
VERSATILE COMPATIBILITY - Plays MP3, WAV, APE, FLAC, and WMA files via U-disk and supports stereo RCA inputs for all your audio sources.
COMPACT STYLISH DESIGN - Sleek aluminum alloy chassis with gold-plated terminals fits perfectly on any desktop or home audio setup.
AUDIOPHILE GRADE SOUND CONTROL - Fine-tune your listening experience with dedicated treble and bass knobs for crystal-clear highs and deep lows.
SEAMLESS WIRELESS CONNECTIVITY - Bluetooth 5.0 ensures stable streaming from all your devices with one-click reset for effortless pairing.

The Douk Audio M1 PRO is a compact yet powerful 320W Bluetooth 5.0 amplifier designed for audiophiles and professionals alike. Featuring a classic TDA7498E chip, it delivers high-fidelity sound with adjustable treble and bass controls, supports multiple lossless audio formats via U-disk, and offers versatile connectivity options including stereo RCA and wireless Bluetooth input. Its durable aluminum alloy build and gold-plated terminals make it a stylish and reliable addition to any home or desktop audio system.

Specifications

ASIN	B07Y8B7RBV
Best Sellers Rank	#137,904 in Electronics ( See Top 100 in Electronics ) #843 in Audio Component Amplifiers
Brand Name	Douk Audio
Customer Reviews	4.4 out of 5 stars 671 Reviews
Item Dimensions	12.13 x 10.04 x 2.48 inches
Item dimensions L x W x H	12.13 x 10.04 x 2.48 inches
Manufacturer	Douk Audio
Material Type	Aluminum Alloy, Gold
Maximum Supply Voltage	35 Volts (DC)
Minimum Supply Voltage	19 Volts
Model	M1 PRO
Mounting Type	Surface Mount
Number of Channels	2
Output Power	320 Watts
Package Type Name	cardboard box
Part Number	DZ071
Specification Met	Dot
Unit Count	1.0 Count
Voltage	35 Volts

Reviews

R**D

6.03.2026

E**.

20.07.2020

S**.

7.01.2026

C**R

6.02.2023

L**V

12.08.2022

V**3

25.11.2025

T**N

7.10.2025

M**R

12.10.2025

A**R

15.05.2024

L**O

17.09.2025

C**T

7.08.2025

J**B

14.05.2020

L**E

10.06.2021

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