Douk Audio A5 2 Channel TPA3255 Stereo Amp, 300 Watts x2 Mini Hi-Fi Audio Power Amplifier Class D for Home Theater System, Passive Bookshelf Tower Speakers with High-Pass Filter + 32V Power Supply
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Availability:
In Stock.
Arrives
Friday, Apr 17
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Model: A5-32V
Features
- HiFi Sound with Adjustable High-Pass Filter: This TPA3255 amplifier features an adjustable high-pass filter (HPF) 30-200Hz to refine mid-high frequencies while minimizing low-frequency interference. Perfect for bookshelf or passive speakers, it enhances clarity and creates a dynamic soundstage ideal for home stereo and theater audio systems.
- Easy Customization with Plug-and-Play Op-Amps: Upgrade your sound effortlessly! Douk Audio A5 includes a tempered glass access panel for quick op-amp replacements, allowing audiophiles to tailor sound profiles without disassembling the unit.
- PFFB Technology and High-Performance PCB: Built with Post-Filter Feedback technology circuit and a 4-layer immersion gold PCB, this digital amplifier reduces distortion and improves frequency response. Enjoy unparalleled audio precision, enhanced signal integrity, and effective heat management.
- Stunning Design for Living Rooms and Studios: Sleek and modern, the compact power amp is equipped with a transparent panel and adjustable internal LED lighting. Multiple color options create a futuristic look, adding sophistication to your home audio setup or studio.
- 300W2 Power with Premium Components: Powered by the TPA3255 chip and premium components, A5 delivers distortion-free audio with ultra-low THD (0.002%) which is perfectly compatible with the DAC-Q11. Whether youre enjoying weekend movie nights, evening music sessions, or after-work relaxation, A5 can deliver exceptional sound quality.
Voltage: 32 Volts (DC)
Manufacturer: Douk Audio
Maximum Supply Voltage: 48 Volts (DC)
Minimum Supply Voltage: 24 Volts (DC)
Mounting Type: Freestanding
Voltage: 32 Volts (DC)
Maximum Supply Voltage: 48 Volts (DC)
Minimum Supply Voltage: 24 Volts (DC)
Mounting Type: Freestanding
Number of Channels: 2
Output Power: 600 Watts
Supply Current: 5 Amps
Material Type: Aluminum
Specification Met: CE
Manufacturer: Douk Audio
Model: A5-32V
Brand Name: Douk Audio
Included Components: 1 * A5 Amplifier; 1 * DC 32V/5A Power Adapter; 1 * User Manual
Item Weight: 1.12 Pounds
Unit Count: 1.0 Count
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If you place your order now, the estimated arrival date for this product is:
Friday, Apr 17
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View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Model: A5-32V
The Douk Audio A5 is my first foray into the intriguing new landscape of small class D amplifiers from China. As someone who got into "hi-fi" in the 1970s, I have always equated amplifier power with amplifier weight and size. Beefy power required heavy massive amplifiers. It was just an inarguable fact. Seeing the recent proliferation of these toy sized amplifiers definitely piqued my curiosity about whether these things could seriously be considered to be in the same league as traditional audiophile amps. I recently bought a pair of Elac Carina BS243.4 bookshelf speakers and found them to be power hungry. I had been using a Monoprice Pure Tube amp to drive them but the 10 watts per channel was insufficient to drive these speakers with any authority. I was looking for some additional clean power to be fed by the Monoprice amp (Love the sound of this amp!) working as a preamplifier, and wondered about one of these amps from Aiyima, Fosi, and Douk, etc. While I know the power ratings on these units are exaggerated, I was impressed with the measurements and reviews I saw online. With this Douk A5 on sale for only $85, I figured it was worth a shot. To say I was blown away by the sound of this amplifier is a huge understatement. The performance is incredible regardless of the price. When taking the price into account, it is truly absurd! In addition to the plentiful power, it managed to preserve the holographic imaging and soundstage of the Monoprice Tube amp. I remember reading some reviews that compared the Douk A5 favorably to multi-thousand dollar amplifiers, and thinking "Aw come on, that is ridiculous". Well I have now been thoroughly enlightened! I think there is a generational paradigm shift underway in the area of home audio amplifiers to the great benefit of audiophile consumers. These tiny class D amps with PFFB technology are the real deal! The only downside I can think of is the appearance of these amps are so cheap and toy like. You are not going to impress anyone with the looks of these as compared to a large, heavy, fancy, stylish, conventional class AB or class A amplifier. But how much are you willing to pay to impress people? I had ordered this with a standard 32V power supply and was curious what the performance increase would be like with the 48V power supply. So I ordered one. Performance was definitely raised a notch with more controlled and robust bass. I could really crank up the sound with the 48V power supply (71 watts @ 6 ohms -> 110 watts @ 6 ohms). However it makes the amp run HOT as the chassis serves as the heat sink. I removed the glass panel on top and replaced it with a piece of steel mesh but it is still very hot. Hopefully this does not affect the lifespan of the unit. Bottom line -This amp is a mind blowing value. As I listen to my system while I type this review, I am still having trouble reconciling the incredible sound I am hearing - with visual disconnect of seeing this tiny little unit being responsible for it.
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Reviewed in the United States on June 13, 2025 by Happy audiophile
Model: A5-32V
I will spare the specs and features of this amp, as you can read them yourself, and focus on what you came here for: how does it sound? [UPDATE: just went through various op amps and the SX52B discrete opamp is by far the best. These are about $14 each on ali*xpress and will transform the A5 into the next level. SparkOS SS3602 are also excellent, but these are almost double the amp's price, and the SX53B's get you there for a fraction of the cost. For a total of $128 ($99 for amp and $24 for op amps) this is an unbelievable setup.] Compared to other impressive Class-D amps coming out of China (Aiyima, Fosi, etc) this one is among the best. Very open and detailed, if a tad analytical (a common characteristic for Class-D amps) but below I discuss how this can be improved. The default configuration is crisp, clean, and very detailed. I focus on acoustic jazz, symphonic/chamber music, and opera, so for me midrange purity, soundstage, and imaging are critical. The soundstage here is excellent-- a bit narrow vertically, but very good imagining and placement otherwise. This is a very, very good amp, period. I have compared this with Aiyima A07, and the A07 max, which also use the TI-5532 op-amp and provide a socket for trying out other flavors. While these amps have similar sound characteristics, the Douk Audio A5, has the advantage of a high-pass filter, a slightly better design circuitry, and an easily accessible op-amp socket via the removable glass (acrylic) cover. I did not care as much for the A07 max (sounded a bit thin to me) and this unit and the original A07 sound much more similar to the A5. I tried upgrading this with various op amps, with mixed results. The LM4562 and OP275 chips seemed to create some muddiness in the midrange (particularly in orchestral passages) that did not sound right; the MUSES02 chip diminished much of the treble region, seeming to remove the delicately brushed cymbals from jazz trios altogether. I have yet to test out the SparkOS SS3602 on this, but so far this unit has not played very nice with alternate op-amps. My favorite at this moment is the original 5532 that it came with. Which is to say, it sounds excellent. To bring back some of the warmth missing from Class-D amps, rather than swapping op-amps, the best bang-for-your-buck upgrade is a tube buffer. When I coupled the stock A5 with a $35 tube buffer (FX-Audio Tube 01) and two JAN 5654W tubes ($20) it took everything to the next level. I would put this up against my much more expensive audiophile amps. So, in short, get this amp. Most can listen to it as is and get much pleasure and enjoyment out of it. If you are itching to follow an upgrade path, spend $55+ in a tube buffer/preamp and see if that does it for you. The quality this amp provides is simply amazing for its price.
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Reviewed in the United States on February 8, 2025 by Pozo