Gold Member Since 2016
Audited Supplier
Guangzhou Dolsi Audio Equipment Co., Ltd.

Amplifier, Power Amplifier, Professioanl Amplifier manufacturer / supplier in China, offering 1400W PRO Audio Digital Sound System Professional Power Amplifier (AT), 2 Ohm PRO Audio PA Sound Professional Power Amplifier (KT series), Class Ab 2 Channel Post Professional Power Amplifier (DH4500) and so on.

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Supplier Homepage Product digital power amplifier 1400W PRO Audio Digital Sound System Professional Power Amplifier (AT)

1400W PRO Audio Digital Sound System Professional Power Amplifier (AT)

FOB Price: US $250 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $250/ Piece
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Port: Guangzhou, China
Production Capacity: 2000 Piece Per Month
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: AT Series
  • Usage: Hi-Fi, AV, KTV System, Any Suitable Applications
  • Tube Type: Transistor Amplifier
  • Sound Channel: 2 or 4
  • Voltage: AC 220V
  • Conductive Mode: D
  • Price: Please Contact Us for Prices.
  • OEM Order: Acceptable
  • Color: Black or Blue Front Panel
  • Transport Package: 1 Piece/Polybag/Protection/ Paper Carton
  • Origin: China
  • Type: Professional Amplifier
  • Used For: Professional
  • Function: Post Amplifier
  • Output Number: 2 or 4
  • Element Number: Push-Pull Amplifier
  • Height: 1 Unit (44mm)
  • Channel Number: All 2 Channel, 3 Channel and 4 Channel Available
  • DSP Built-in: Available, Pls Contact Dolsi for Price with DSP
  • Trademark: Dolsi or client′s logo
  • Specification: CE, RoHS, CB, 3C
  • HS Code: 851840009
Product Description
1 Unit Class-D Digital Power Amplifier  AT Series1400W PRO Audio Digital Sound System Professional Power Amplifier (AT)



1 U  Digital Power Amplifier 
Model No.AT-900AT-1100AT-1400
Channel number2 channel2 channel2 channel
Rated output power 8900Wx2 1100Wx21400Wx2 
Rated output power41400Wx21800Wx22300Wx2
Rated output power21750Wx22000Wx22600W
Bridged output power828000W3600W4600W
Bridged output power43500W4000W5200W
Voltage Gain




THD (total harmony distortion)

0.035% (@ 8Ω,1kHz,1/8 rated power)0.05% (@ 8Ω,1kHz,1/8 rated power)
IMD(intermodulation distort.)0.15% (@ 8Ω,1kHz,1/8 rated power)
S/N Ratio (20Hz-20Khz,4 Ohms)>106dB A
Cross-talk (1kHZ, 4 Ohms)>40dB
Frequency response10Hz to 20k Hz,+/-1dB
Input impedancebalanced 20K/ non-balanced 10K
Damping factor (10-400Hz,8Ohms)


Slew Rate


Input sensitivity0.775V,0dB
Protection funtionshort circuit, direct current, over-load and  amplitude limit.
Control knobs  power ON/OFF switch,VOLUME control in front panel . STEREO/BRIDGE/MONO   switch in rear panel .
LED indicatorsCLIP/-10dB/SIGNAL/MONO/BRIDGE/STATUS indicators in front panel
Power delay4 seconds
Input interfaceXLR  input socket
Output interfaceSPEAKON connector
Size (WxHxD)483x44x230mm
Net weight 6.4kg7.0kg7.5kg

1400W PRO Audio Digital Sound System Professional Power Amplifier (AT)





DOLSI  AT Series digital power amplifier with Class D circuit category, is a new milestone in amplfier development.  Advanced Class D PCB module and SMPS power supply module  are used to obtain high efficiency and stability.  It has very high power density, which makes the amplifier to reach powerful output in a very small shell space. 



.  Unique and elegant enclosure design .
.  Compact structure with only 1U height and 9" depth and light weight, easy to move and install.
.  Fixed switch frequency Class-D  PCB module.
.  Soft resonant switching power supply LLC  module.
.  Active power factor correction technique (FPC), can work with high stability under full          
   voltage range 90-264V .
.  High efficiency loudspeaker EMF absorption system.
.  Unique peak clipping limiter and ripple Elimination.
.  Low electricity consumption.
.  Nice cooling system with quality fans to make wind flow  front to the rear.
.   Accurate volume control, switch on/off, signal, clip and protection LED light  in front panel.
.   Fully automatic protections against  direct current protection, over heat, over load, on/off switching,       RF and amplitude limit. 
.   XLR balance input and professional SPEAKON output connectors.
.   Stereo ,bridge and mono mode selection pull switch is set on back panel.
.   Good choice to applications in high power output in live show, outdoor event, stadium,
     and flow performance. 

Our Company:
With over ten years of experience in the audio field, Dolsi Audio is a manufacturer focusing in research, development and manufacturing of high quality audio equipment, including professional power amplifier, speaker, and other audio peripheral products. 

Product packing: 
Each piece packed in polyfoam protections before packed into a paper carton.  Or packed as per client's request.
Good Service to you:
1.  Manufacturing with Dolsi brand.
2.  Manufacturing with your brand ( OEM).
3.  Manufacturing with your design, your specification and your brand ( ODM). 
4. Closely following up, fluent communication, quick feedback and action to any of your query or request for sampling, order,  production,shipment, documents and after-sales service.  

Any inquiry, pls contact 

Ms.Pearl Wei
Mob:0086 13751813264
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Ms. Pearl Wei
Export Sales Manager
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