📘 Douk Audio manuals • Free online PDFs

Douk Audio Manuals & User Guides

Douk Audio, often known as Nobsound, manufactures affordable Hi-Fi audio components including vacuum tube amplifiers, DACs, preamps, and spectrum visualizers for desktop and home audio setups.

Tip: include the full model number printed on your Douk Audio label for the best match.

Douk Audio Support

Official site: https://doukaudio.com
General support: https://doukaudio.com/pages/contact-us
Warranty & registration: Warranty info
Support phone: +86-17704028602
Support email: nobsound@doukaudio.com
Contact form: Contact manufacturer support

Douk Audio manuals

Latest manuals from manuals+ curated for this brand.

Douk Audio GFJ782 Bluetooth Stereo Power Amplifier Manual: Learn How to Use

August 3, 2022

The Douk Audio GFJ782 Bluetooth Stereo Power Amplifier is a powerful device that can enhance your audio experience. Whether you want to listen to music from your phone, tablet, or…

Douk Audio 2 Channel 200W HiFi Bluetooth 5.0 Vacuum Tube Amplifier-User Instructions

June 28, 2022

Douk Audio 2 Channel 200W HiFi Bluetooth 5.0 Vacuum Tube Amplifier Specifications VOLTAGE: 24 Volts, 30 Volts MANUFACTURER: Douk Audio BRAND: Douk Audio NUMBER OF CHANNELS: 2 OUTPUT: 100W(4Ω) AUX…

Nobsound Mini Bluetooth 5.0 Power Amplifier, Stereo Hi-Fi Digital Amp 2.0 Channel-Complete Features/User Manual

June 20, 2022

Nobsound Mini Bluetooth 5.0 Power Amplifier, Stereo Hi-Fi Digital Amp 2.0 Channel Specifications Package Dimensions 6.73 x 5.67 x 2.6 inches Item Weight 15.5 ounces Voltage 24 Volts (DC) Bluetooth…

Douk Audio manuals from online retailers

Douk Audio H7 PRO Digital Amplifier User Manual

H7 PRO • August 11, 2025

Comprehensive user manual for the Douk Audio H7 PRO TPA3255 Balanced XLR Audio Power Amplifier, covering setup, operation, maintenance, troubleshooting, and specifications.

Douk A5 Stereo Amplifier User Manual

A5 • August 10, 2025

Comprehensive user manual for the Douk A5 Stereo Amplifier, featuring TPA3255 chips, adjustable high-pass filter, and plug-and-play op-amp customization. Learn about setup, operation, maintenance, and specifications for this…

DoukAudio K5 DAC Amp Headphone Amplifier User Manual

K5-US • August 10, 2025

Comprehensive user manual for the DoukAudio K5 DAC Amp Headphone Amplifier, covering features, setup, operation, maintenance, troubleshooting, and specifications for optimal audio performance with PC, speakers, and home…

Nobsound Mini Bluetooth 5.0 Power Amplifier User Manual

GFJ058NEW • August 7, 2025

Comprehensive instruction manual for the Nobsound Mini Bluetooth 5.0 Power Amplifier (Model GFJ058NEW), covering setup, operation, maintenance, and troubleshooting for optimal audio performance.

Douk Audio A5PRO Bluetooth Amplifier User Manual

A5 PRO 48V • August 4, 2025

Comprehensive user manual for the Douk Audio A5PRO Bluetooth Amplifier, covering setup, operating instructions, maintenance, troubleshooting, and detailed specifications for the 2-channel HiFi stereo amp with TPA3255 chip.

Douk Audio C100 PRO Mini Hi-Res Bluetooth Music Streamer Digital Audio Player Preamp DAC User Manual

C100 PRO • August 4, 2025

Comprehensive user manual for the Douk Audio C100 PRO, a mini Hi-Res Bluetooth music streamer, digital audio player, preamp, and DAC. Includes detailed instructions for setup, operation, maintenance,…

DoukAudio M1 MAX Amplifier User Manual

M1 MAX • August 3, 2025

The DoukAudio M1 MAX is a high-performance 2-channel Bluetooth amplifier designed to deliver powerful and clear audio for your home stereo system. Featuring a TPA3255 amp chip, it…

Douk Audio 120W Mini Bluetooth 5.0 Power Amplifier User Manual

GFJ782_US • August 3, 2025

Comprehensive user manual for the Douk Audio 120W Mini Bluetooth 5.0 Power Amplifier, covering setup, operation, maintenance, troubleshooting, and specifications for model GFJ782_US.

Nobsound G2 Subwoofer Power Amplifier Mini Mono SUB Amp 100W PBTL BTL Bridge Home Theater User Manual

8541737971 • August 1, 2025

Instruction manual for the Nobsound G2 Subwoofer Power Amplifier, a mini mono SUB amp with 100W output, suitable for home theater systems.

Douk Audio P6 Mini Tube Preamp Speaker Receiver Stereo Pre-Amplifier USB Player User Manual

SUC-P6-MINI • July 28, 2025

The Douk Audio P6 Mini is a versatile tube preamplifier featuring Bluetooth 5.0, USB (U-disk), and Stereo RCA inputs. It enhances audio quality with a warm, mellow sound…

Douk Audio T3 PRO Vacuum Tube Phono Preamp User Manual

DZ075 • July 27, 2025

The Douk Audio T3 PRO is a versatile vacuum tube phono preamplifier designed for MM turntables and other audio sources. It features both MM signal input and a…

Douk Audio T7 7-Band Equalizer User Manual

SUC-T7 • July 21, 2025

Comprehensive user manual for the Douk Audio T7 7-Band Equalizer Balanced EQ Audio Preamp, including setup, operation, specifications, and troubleshooting.

Douk Audio video guides

Watch setup, installation, and troubleshooting videos for this brand.

Douk Audio VU9MINI RGB LED Tube Sound Level Meter Music Spectrum Display Demonstration

0:21 • 1280×720 • demonstration

DOUK AUDIO L3 3-Channel Audio Loop Switcher with VU Meter and RCA Inputs

0:50 • 1280×720 • visual_overview

Douk Audio HiFi Pure Brass Turntable Platter Mat for Vinyl LP Record Player 2mm

0:23 • 1280×720 • visual_overview

Douk Audio A5 Digital Amplifier: Compact Stereo Power Amp for Home Audio

1:07 • 1280×720 • visual_overview

Douk Audio H6 HiFi DAC Preamp Headphone Amplifier Bluetooth Receiver Overview

0:29 • 852×480 • visual_overview

Douk Audio U5 Mini Fully Balanced Headphone Amplifier with XLR and 4.4mm Outputs

0:30 • 1280×720 • visual_overview

Douk Audio H6 HiFi DAC Preamp Bluetooth Receiver Feature Demonstration

0:30 • 852×480 • demonstration

Douk Audio T9 Tube Preamp DAC Headphone Amplifier with Phono Input

0:41 • 852×480 • visual_overview

Douk Audio U8 HiFi Bluetooth DAC Decoder with ES9038Q2M Chip and Multiple Inputs/Outputs

0:28 • 852×480 • visual_overview