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User Manual of Douk Audio A100
Warm tips:
- The kind of AUX output signal (bass or full-frequency) is determined by the input signal, and the AUX output with amplification.
- The super bass and SW-FREQ knobs are only valid in the SUB mode, invalid if you select FLAT mode.
- Before use, please make sure that you have selected correct working modes, mono or stereo, sub or flat, or else the A100 won’t work normally.
- 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.
- 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
Power Output Table of Douk Audio A100
Power Adapter | Speaker Impedance | Stereo Output Power | Mono Output Power |
|---|---|---|---|
DC 24V/5A | 4Ω | 68W+68W | 90W |
DC 24V/5A | 6Ω | 61W+61W | 60W |
DC 24V/5A | 8Ω | 55W+55W | 54W |
DC 32V/5A | 4Ω | 78W+78W | 150W |
DC 32V/5A | 6Ω | 71W+71W | 120W |
DC 32V/5A | 8Ω | 65W+65W | 107W |
DC 36V/6A | 4Ω | 107W+107W | 190W |
DC 36V/6A | 6Ω | 100W+100W | 150W |
DC 36V/6A | 8Ω | 94W+94W | 118W |
DC 48V/5A | 4Ω | 120W+120W | 315W |
DC 48V/5A | 6Ω | 110W+110W | 220W |
DC 48V/5A | 8Ω | 102W+102W | 190W |
DC 48V/10A | 4Ω | 250W+250W | 315W |
DC 48V/10A | 6Ω | 210W+210W | 240W |
DC 48V/10A | 8Ω | 185W+185W | 190W |
- A100 Amplifier ×1
- DC 48V/5A Power Adapter ×1
- User Manual ×1
Hear What They Say about the K5
Old Guy Hifi
Douk K5 it’s a cool little audio device. It’s the perfect unit for small spaces like a Dorm Room.
UTILITARIAN TV
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MrJayBee Intl
DOUK AUDIO K5 USB DAC Headphone Amplifier | Best DAC under 120$?
Elevate Your Digital Audio Experience
Adopting TI's TPA3255 power chip, max output can reach 300W to effortlessly drive all home passive speakers and subwoofers. Besides PFFB technology, A100 is equipped with exclusive patented heat dissipation technology which makes TPA3255 reach its maximum potential, letting you immerse yourself in the high-fidelity audio world.
Customer Reviews
Built like a tank with ample cooling. It looks the party of a 300 watt per channel amp, and seems to be built to handle it, but I do not think it is that in reality. It was plenty load for my uses, but 300 watts would be devastating at full. Perfectly fine for my small living room though. As for sound, most of these chip-based class D amps sound clean and perfectly fine. Nothing to really complain about. Very cool that you can monoblock this thing if you get two. Might be the right choice if you need the extra power. Very basic RCA in only. I marked it down since, for the price, it is a bit lacking. The power rating does not seem accurate and you could easily get a proper integrated amplifier at this price with multiple inputs and a power rating that, while smaller, would be very accurate. This isn't a bad amp, but it needs to come down in price.
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Unfortunately, I haven't fully setup proper 2.1 speakers, yet (still looking for a proper subwoofer), so I only tested using car stereo speakers (not in a box). Still, it sounded pretty clean from what I can tell. I used it on a pair of Edifier QR65's and Pioneer SP-BS41's, and it had no problems driving those.
My son is very happy with it. It was easy for him to set up and begin using and the sound quality he now has is even more outrageous, much to my chagrin! The overall value, quality and build quality does make it an excellent purchase and option.
The first one that I purchased sounded a bit off. There was not much depth in the music it was like all of the instruments and vocals where all on the same plane. Returned it and got a replacement, when it arrived I connected it and it sounded great. I get a good separation of instruments. It drives my office system just great.
Sounds clean and good build quality, I really wanted to like this amp. It doesn’t have the power of the $35 LePai amp. That’s just not excusable at this price point. The controls are a bit confusing too,