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Douk Audio A5 HiFi TPA3255 Digital Amplifier Audio Stereo Amp w/High-Pass Filter

Item description

Thank you for all your support on the Douk Audio A5.
Recently, the following upgrades of A5 were completed based on all feedback.
1) Adopts 4-Gang C-Type Potentiometer: Improved precision in high-pass filtering, addressing calibration issues.
2) High-Frequency Circuit Optimization: Reduced distortion via revised PCB layout and component matching.
3) Adopts Aluminum Electrolytic Capacitors: Enhanced reliability and longevity.
4) HPF Scale Standardization: User-friendly adjustments.
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.
  • 300W×2 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 you’re enjoying weekend movie nights, evening music sessions, or after-work relaxation, A5 can deliver exceptional sound quality.
Warm tips: The A5 with 2PCS pluggable NE5532 op-amps, can be upgraded by dual op-amps like 2134/2604/5532/2068/muse02 etc.
Parameters
  • Brand: Douk Audio
  • Model: A5
  • Audio input: Stereo RCA
  • Audio output: Banana speaker jacks/3.5mm AUX
  • High-pass filter adjustment range: 30Hz-200Hz
  • Max. output power: 300W*2 (4Ω)
  • Matched speaker impedance: 4-8Ω
  • THD+N: 0.002%
  • SNR: ≥114dB
  • Input sensitivity: 2V
  • AUX rated output level: 3.7V
  • Frequency response: 20Hz-20KHz (±0.7dB)
  • Working voltage: DC 24-48V
  • Dimensions (W*D*H): 130*102*33mm / 5.12*4.02*1.30in
  • Package dimensions (W*D*H): 265*240*65mm / 10.43*9.45*2.56in
  • Net weight: 506g / 1.12lb
  • Package weight (Without Power Supply): 0.8kg / 1.76lb
  • Package weight (With 32V5A Power Supply): 1.1kg / 2.43lb
  • Package weight (With 48V5A Power Supply): 1.2kg / 2.65lb
Power Output Table of  The A5
 
Power Supply Speaker Impedance Rated Output Power
32V/5A 4Ω  78W+78W
6Ω  71W+71W
8Ω  65W+65W
36V/6A 4Ω  107W+107W
6Ω  100W+100W
8Ω  94W+94W
48V/5A 4Ω  120W+120W
6Ω  110W+110W
8Ω  102W+102W

48V/10A

 4Ω  250W+250W
6Ω  210W+210W
8Ω  185W+185W
Packing list
  • 1* A5 Amplifier
  • 1* Power Adapter (Optional)
  • 1* User Manual
Safe and secure payment by PayPal.
Please leave VALID TELEPHONE NUMBER which is necessary and very important.
 
Customs Clearance
We are NOT responsible for any customs duties fee.
We are NOT responsible for any import tax or customs delay.
 
Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). 

Free Return Within 30 Days

We provide  return within 30 days for all items you bought on eBay, full refund and return shipping will be provided.

1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes).

If you are satisfied with our products and service please leave a 5-star StarStarStarStarStar. Positive feedback rating Feedback is very important to us just like our lives, please DO contact us before you leave a neutral Neutral feedback rating or negative Negative feedback rating feedback, we will provide better solutions until you are satisfied.

 

 

 

Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc.
 
As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable.
 
We will spare no efforts to bring great products and service for customers and extremely to improve our customers’ listening experience.
Please don't hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at:
 
 Working time

Beijing(CN)Monday-Friday09:00 AM - 18:00 AM
New York(US)
Sunday to Thursday08:00 PM - 05:00 AM
London(UK)Monday-Friday01:00 AM - 10:00 AM
Paris(FR)Monday-Friday02:00 AM - 11:00 AM
 
During holiday, please allow us to response you early next week. Please don't leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation.
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