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

Audio Amplifier, SMPS Power Amplifier, PA Audio manufacturer / supplier in China, offering Switch Mode (SMPS) Power Amplifier (4 channel), Sound System PRO Audio Speaker Professional Power Amplifier (GT Series), PA System PRO Audio Four Channel SMPS Speaker Power Amplifier and so on.

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Switch Mode (SMPS) Power Amplifier (4 channel)

FOB Price: US $1-650 / Piece
Min. Order: 30 Pieces
Min. Order FOB Price
30 Pieces US $1-650/ Piece
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Production Capacity: 2000PCS Per Month
Transport Package: 1PC/Polybag/Inner Protection/ Carton
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: 4 channel DTA
  • Application: Commercial
  • Price: Pls Contact Us to Discuss About Price
  • Channel: 4
  • OEM Production: Acceptable
  • Specification: CE, RoHS and CB certification
  • HS Code: 851840009
  • Operation Mode: Knob Control
  • Certification: CE, RoHS, CCC, CB
  • Height: 2 Unit
  • Power Output: 400W to 800W at 8 Ohm Each Channel
  • Trademark: Dolsi brand or client′s logo
  • Origin: Guangzhou, China
Product Description

Switching Mode Power Supply (SMPS) Power Amplifier  DTA series  Multi-channel

Switch Mode (SMPS) Power Amplifier (4 channel)


 Model No.DTA 3.4DTA 6.4DTA 8.4
Output power at  8 ohm stereo 1kHz(HIA) with0.5% THD (per channel)400Wx4600Wx4800Wx4
Output power at  4 ohm stereo 1kHz(HIA) with0.5% THD (per channel)700Wx41000Wx41400Wx4
Output power at 8 ohm 1kHz(HIA)with0.5% THD 8ohm bridge mono1100Wx41800Wx42300Wx4
Voltage Gain33dB35dB35.8dB
 Frequency Response(at 1 Watt)              20Hz-20kHz,+0/-1dB
Total Harmonic Distortion(THD)              <0.5%,20Hz-20kHz
Intermodulation Distortion(1MD) 60Hz and 7kHz at 4:1,from full rated output to -30dB                 ≤0.35%
Slew Rate               >10V/us
Damping Factor(8 ohm),10Hz-400Hz                 >200
Signal-to-Noise Ratio (below rated power,20Hz to 20kHz,A-weighted)                >100dB
 Crosstalk (below rated power) 
At 1 kHz               -75dB
At 20 kHz                -59dB
Input 5ensitivity for full rated power at 8 ohm             0.775V or 1.4V
Input Impedance(nominal) 
Balanced             10K ohm
Unbalanced            20K ohm
Protection features Protection against short circuits, no-load, on/off muting, Rf  interference.5table into reactive  or mismatched loads
Dimensions (WxHxD)           483x88x320 mm
 Net weight               8.20Kg                           








This DTA Series adopt full bridge (SMPS) switching mode power supply with high efficiency and stability, third grade CLASS-H audio amplifier circuit. Both 2 and 4 channel are available. The main features are as the following: 

. Patented and elegant enclosure design. The aluminium front panel brings you the sense of high quality. Very light in weight and easy to install.
.Well-crafted machine with compact structure.
.Strong output power and applicable to a variety of applications.
. Integrated circuit ensuring excellent and independent output for the multi-region sound reinforcement system. 
.Advanced and full protection circuit against short-circuit, broken circuit, direct current, error matching, over-heat and no-load.
 .Well selected and strong material of inside components and the enclosure. Good anti-vibration. 
.Long-lasting performance stability 
.Good cooling system with automatic speed fan with high efficiency of heat dissipation.
.Accurat, and clean sound quality with very low distortion.
.Speakon® socket, binding post output connector, XLR input connector and speaker parallel connector.
.Well tested by AP testing machine to ensure strong stability.

Product packing: 

Each piece of product with polyfoam protection 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. 

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