4*1800W Professional 1u Digital Power Amplifier D4180

Features
1U height 9 "depth standard chassis, compact size, lightweight and compact;
ClassD amplifier module with fixed switching frequency;
Soft-switching LLC resonant switching power supply module;
Active power factor correction (PFC), which can work stably in the full voltage (90-264V) range;
Efficient speaker back EMF absorption system;
Unique peak clipping limiter and ripple elimination network;
Temperature-controlled variable-speed fan, air flow from front to back;
Backplane connection mode selection (stereo / parallel / bridged);
The back panel is equipped with input sensitivity selection switching (0.775v / 1v / 32dB);
Full circuit protection, including: soft start, DC, infrasound, high frequency, overheating, short circuit, power on / off mute;
Low frequency is thick and powerful, extremely low diving depth, medium and high frequency are transparent, clear and pleasant;
The integrated design of the power amplifier module and the power module, more than 85% of the devices use mechanical automation to ensure product consistency.

1)Our product have passed ISO9001,SGS,CE, CCC, FCC, ROHS, CE-LVD
2)Customized service are offered to meet our client's demand .Different raw material are optional according to your budget.
3)We are a factory which will provide reasonable price,high quality product and professional service.
4) Fast delivery and excellent after-sale service

About payment and Warranty

About Accessories:
We will send you the enough connectors and some other spare parts for you free.
Packaging:
1)Dual carton with Foam
2)Carton with external plywood bracket for Speaker


Our company:
Area: 10000 square meter
Worker:  more than 200 rich experienced technicians
History: more than 8 years ----------- We are a global marketing factory
Certificates:  ISO9001(2008), RoHS ,CCC, FCC, CE,SGS
Market: western European,north American,middle-east Australia, east-south Asian , etc.
Our promise:pay more attention to product quality than you
We will reply you any question within 24 hours.




1>. What's your warranty period?
All our products have three years warranty on free charge, in case the amplifier is burned in the future, please tell me issue describe, then give us your repair instruction with picture, please just ask your technician to replace burned components, then solve problem.Of course, we will provide technician support for over three years products, but you should pay for spare parts and shipping cost at that time.

2>. What's your payment term?
For the sample order, we can accept T/T, Western Union, MoneyGram,Paypal and other.
But for the Batch order, we support Payment term by T/T,Western Union and other.
( 30% deposit in advance, balance 70% before shipment ).

3>. How many days you could deliver?
For the sample order, we could send by Express upon receipt of this funds. You could receive them approx 3-5 days after we receive the deposit.
For the batch order, we will produce on the premise of guarantee quality as soon as possible.

4>. What's mode of transportation?
For the sample order, we will deliver by Express, like DHL, Fedex, TNT and EMS.
Of course, it is more economical by sea for batch order.

5>. How to contact us?
Send your inquiry detail to get the sample, click "send" now!
Our purpose:
Quality first,Credit first Customer first, First-rate service.
We insist in "honest business and high quality service" as our business ideal, with a powerful R&D team and a group of skilled workers in the factory as the strong backup and support,
we always work on this ideal to serve all customers with good quality and reasonable price.


if you have any problems.please as soon as possible contact with me.

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