High Quality Professional 250W/350W/500W Home Amplifier Module Class D Plate Amplifier

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Product Overview


High Quality Professional 250W/350W/500W Home Amplifier Module Class D Plate Amplifier



Product Description




Class-D switch power hight efficiency design with new surface mount technology & low power consumption at standby mode.




Model NoDA-250DA-350DA-500
Output Power250W RMS @ 4 Ω350W RMS @ 4 Ω500W RMS @ 4 Ω
Standby PowerTotal<0.5Total<0.5Total<0.5
Total Harmonic Distortion<1%<1%<1%
Line Level Input Sensitivity150mV150mV150mV
Balanced Input Sensitivity  150mV
Hight Level Iutput Sensitivity 2.5V2.5V
Hight Level Output Sensitivity 2.5V2.5V
Signal To Noise Ratio>100dB>100dB>100dB
Frequency Respones25Hz~160Hz15Hz~160Hz15Hz~160Hz
Variable Low-pass Crossover40Hz~160Hz(12dB/OCT)40Hz~150Hz(24dB/OCT)40Hz~150Hz(24dB/OCT)
 Built-in Hi-pass Crossover20Hz(12dB/OCT)15Hz(12dB/OCT)15Hz(12dB/OCT)
Built-in Bass Booster+4dB @ 36Hz+5dB @ 25Hz+5dB @ 25Hz
Built-in Phase0°/180° Switch0°/180° Switch0°/180° Switch
 Built-in Auto Power Switch ON/AUTO ON/AUTO ON/AUTO
ProtectCliplimit ,DC, Short, CircuitOver Current, Overheat 
Operating Voltage115Vac/230Vac SWITCHABLE115Vac/230Vac SWITCHABLE115Vac/230Vac SWITCHABLE


Product Pictures



sub amp for subwoofer

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Packaging & Shipping



*Product package

Normally we do the products packages as below:

Product in PE bag -- Gift box or inner carton with EPE inside -- Outer carton

We can design different package style for you and with your logo and shipping mark printing.



(1).For samples,we usually ship the items by international express,such as FEDEX,DHL,UPS,etc

(2).For MP order,we can ship by sea (FCL, LCL combined with other suppliers) or air transporation.

(3). We are expert in foreign trade, just trust and give your order to us, we deliver goods to you safety and fast.



packing shipping

Our Services



We are professional audio products manufacture for 10 years.

We can design or by customer's idea about the product: schematic-PCB layout-structurer-testing.

Our R&D team dedicated to the creation of new and innovative products,can fulfill your orders. 



Vistron can provide provide every step between concept and production of your ideas.

Below steps we can do for you:

EE - Electronics Engineering

SE - Software Engineering

ME - Mechanical Engineering

ID - Industry Design

PE - Production Engineering

PM - Production Management
QA - Quality Assurance

PQ - Production Quality Control

CC - Customer Coordination

DA - Documentation Administration


We pay attention to High Quality.

All raw materials and accessories must be tested before entering production facilities.

Mass production will begin only if the products have been tested and have passed inspection.

During mass production, personnel will periodically check products to ensure randomized testing.

Before shipping,our QC will check it again strictly to ensure the High Quality.

All products 100% QC before shipment.

Warranty & Return

We offer one-year warranty for our products.

As long as there's no man-made problem, usually we can just add some pieces in your next order.


Professional service

Great products created by solid, happy, knowledgeable, experienced and achievement-seeking people. 

Our teams of staff, from Electronic, Mechanical, Software, Quality, Safety, and Production engineers to Sales and Administration are passionate about music and truly love to listen to our clients’ needs in seeking solutions for benefiting all levels of customers.

What we can provide to you is not only  just the products,but also the satisfying service.

Well-trained and experienced staffs to answer all your questions in time.




Company Information

Established in 1998, Vistron Audio with over 20 years of focusing on research-design-manufacturing-marketing and engineering service in the field of audio products.

Mainly cover: 
-Power amplifier (Wireless audio amplifier, subwoofer amplifier, amplifier plate, etc);
-Speakers (WiFi/Bluetooth speaker, Active/passive speaker, subwoofer, sound bar,etc);
-Wireless audio (DAB, WiFi amplifier, WiFi streamer, etc);
-DJ equipment (DJ mixer, CD player, Midi controller);
- The same time, our strength are OEM and ODM
OEM is our main business line, we have OEM for over 100 brands all over the world. 
ODM is also one of our R&D business item too, we make the products according to your design and requirements.


We are professional factory with about bridle-wise more than 200 workers, and 6000 square meters acreage. Equipped with strong capabilities in R&D, qualified engineering teams with rich experience in audio products, SMT line, technical and mechanical backup , and we have strict QC standard (AP,LMS ,aging testing…) and experienced sales support.

At Vistron, we are committed to providing the highest level of customer service, competitive pricing, speedy delivery and a comprehensive, cutting-edge product offering.

Our ultimate goal is your satisfaction.
Words cannot express all, just trust us and we will be the right audio partner you need!


  about usworkshop





Q: How to process an order?What about price?


 A:Please send an inquiry or contact with us online, after receiving your inquiry we wil reply you with prices and information;Or catalog with full prices.



Q:I can get a samples?

A:We are honored to offer you samples for testinng before placing order.



Q:Could I have logo on the products and packing?

A:Totally acceptable, OEM service grown up for many years,,thank you.



Q:Could you produce the products as my idear?

 A:Of course, we have experienced engineers to design the expected items as you want , we have much experience at ODM.



Q:What is your payment term?

A:For sample:T/T , Paypal,west union;

   For production :T/T,L/C,or negotiable term.



Q:What would the delivery time be?

A:Regularly 30 days after order confirmed, or we can talk details case by case



Thanks for your time and welcome contact me!




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