Douk Audio A100 Class D Integrated Amplifier

Douk Audio A100 TPA3255 Digital Stereo Power Amplifier/Mono Amplifier/Subwoofer Amplifier

The Douk Audio A100 Class D Integrated Amplifier is a compact yet extremely powerful audio amplifier designed for users who want high-end HiFi performance in a small form factor. Built with advanced Class D amplification technology, it delivers strong output power, ultra-low distortion, and flexible working modes that support both stereo and mono configurations. This makes it suitable for home audio systems, subwoofer setups, desktop HiFi rigs, and compact theater systems.

With its high-efficiency architecture and versatile sound control features, the A100 is engineered for audiophiles who demand both power and precision.

 

High-Performance Class D Amplification Technology

At the heart of the Douk Audio A100 is a modern Class D amplification system designed for high efficiency and clean audio reproduction.

Key Technology Features

• Advanced Class D digital amplifier design

• High-efficiency power conversion system

• Low heat generation during operation

• Optimized circuit layout for sound clarity

 

Features

• Exclusive Patented for Heat Dissipation: The A100 breaks the traditional heat dissipation techniques, discards the conventional design of built-in heat sinks and body-edge ventilation holes, ingeniously integrating the heat sink seamlessly with the body of A100 itself. While maintaining the A100’s stylish and eye-catching looking, significantly expands the heat sink groove area and achieves more direct and efficient airflow contact to make great improvement in heat dissipation efficiency and ensures the A100’s stability and performance during continuous work.
• Innovative and Versatile Four Working Modes: A100 with mono/stereo and bass/full-frequency switch, that means it supports four combinations of working modes to adapt flexibly to your diverse usage scenarios and allow seamless mode switching. Bridged mono mode provides more power for your system, pairing two A100s to create a powerful audio system, significantly enhancing your listening experience.
• TI TPA3255 and PFFB design: Features the TPA3255 class D amp chip, default comes with DC 48V/5A power adapter, the max output power of each channel reaches 120W in stereo mode and 315W in mono mode. Adopts post-filter feedback technology (PFFB), significantly reduces distortion, enhances linearity and frequency response, and improves sound purity and system efficiency, it also utilizes four-layer premium immersion gold PCB, Japanese Rubycon, ELNA, German WIMA capacitors and high-precision potentiometer etc. for exceptional audio quality.
• Richer Connectivity and Adjustment: Besides mono/stereo speaker output, A100 also supports 3.5mm AUX output with amplification and independent volume control, another amplifier, active speaker or subwoofer can be connected to build 2.1 or multi-channel home theater systems. A100 also features Super Bass and SW-FREQ knobs to freely adjust the bass gain and cutoff frequency to achieve more shocking bass effects.
• Swappable Op-amps and More Details: default 2PCS pluggable NE5532, easily to be replaced by 8-pin dual op-amps like MUSES02, OPA2604, OPA2134PA, OP249, AD827, LME49720HA, etc. to tailor your own sound styles. All-Aluminum alloy chassis, compact yet powerful; bigger pure copper banana speaker terminals to transmit larger current safely; its unique shape makes it easy to be placed horizontally or vertically to adapt to different spaces.

 

Parameters

• Brand: Douk Audio
• Model: A100
• Audio input: stereo L/R RCA
• Audio output: banana speaker jacks (mono / stereo) / 3.5mm AUX
• Working modes:
  Mono
  SUB：One subwoofer
  FLAT：One full-frequency speaker
  
  Stereo
  SUB：Two subwoofer
  FLAT：One pair of full-frequency speakers
• RMS output power in stereo mode: 300W*2（4Ω）
• RMS output power in mono mode: 600W*1（2Ω）
• Matched speaker impendace: 2-8Ω (Mono) / 4-8Ω (Stereo)
• RMS output level of AUX: 2.8V
• Bass gain adjustment range: ±6dB
• Bass cutoff frequency range: 50-220Hz
• Input sensitivity: 2V
• Frequency response: 20Hz-20kHz (0.5dB）
• THD: 0.002%
• SNR: ≥115dB
• Dimensions (W*D*H): 149*142*60mm / 5.87*5.59*2.36in
• Package dimensions (W*D*H): 295*225*85mm / 11.61*8.86*3.35in
• Net weight: 1136g / 2.50lb
• Package weight: 2500g / 5.51lb

 

 

Frequently Asked Questions (FAQs)

What is Douk Audio A100 used for?

It is used for powering speakers and subwoofers in HiFi audio and home theater systems.

Does it support subwoofers?

Yes, it has dedicated SUB modes for subwoofer integration.

How powerful is it?

It delivers up to 300W × 2 in stereo and 600W in mono mode.

What speakers are compatible?

It supports 2–8Ω speakers depending on mode.

Is it good for home theater?

Yes, it is ideal for compact home theater systems.

Does it support bass control?

Yes, it has ±6dB bass adjustment and adjustable cutoff frequency.

Is it suitable for beginners?

Yes, it is easy to install and use.

Does it have low distortion?

Yes, it features extremely low THD of 0.002%.