Since2005, over 10 years OEM /ODM experience in Pulic Address System and Professional Audio System ,strict quality control and good price
Product Features
Class AB Professional Amplifier 
| Model |
QS-150 |
QS-250 |
QS-350 |
QS-450 |
| Power 8 Ohms |
150W*2 |
250W*2 |
350W*2 |
450W*2 |
| Power 4 Ohms |
250W*2 |
350W*2 |
500W*2 |
600W*2 |
Frequency Response
THD+N |
20Hz-20KHz,
below and equal 0.05% |
20Hz-20KHz,
below and equal 0.05% |
20Hz-20KHz,
below and equal 0.05% |
20Hz-20KHz,
below and equal 0.05% |
| Siew Rate |
10V/us |
20V/us |
20V/us |
20V/us |
| Damiping Factor |
Above 100 |
Above 200 |
Above 250 |
Above 250 |
Singal to Noise Ratio
Cross Talk |
Above and equal 85dB,
Above and equal 60dB |
Above and equal 85dB,
Above and equal 65dB |
Above and equal 89dB,
Above and equal 65dB |
Above and equal 90dB,
Above and equal 70dB |
| Input Impedance |
0.7V |
0.8V |
0.9V |
1.0V |
| Cooling |
2 Fans |
2 Fans |
2 Fans |
2 Fans |
Main Functions:
*2 Channels Amplifier, ABdesign,
*Special Cooling System
*Factory competitive price, fast delivery,
*Short circuit,themal,over load,clip limiter,DC Voltage,
*480*410*88MM Size,
Product Advantages:
1.Stable quality,Good price
2.Short product period
3.On time delivery
4.OEM Ability
5.Excellent R&D team
Our Service:
1.Products design:We will help our customers to design the full products line .
2.Quality Stability :We assure the quality stability ,once there is quality problem happen, we will withdraw the cargoes unconditionally .
3.Pre-production sample confirmation-after get customers 30% deposit .Within 7 days we will provide pre-production sample to customers for confirmation before mass production.
4.Quick and intimate service:Quickly provide all the files which necessary for handling enrtrance formalities;Assist our customers to make certificate
5.On time delivery :For the first order ,we can ship within 25 days ,and for the repeated orders ,15 days in need .
6.Protect our customers privacy of ingredient and market information :
Making usre that for the same our brand of products,in each country ,we only sell to one customer.
Our Advantage:
1.OEM Ability ---Over10 years speakers and amplifiers product manufacturer experience .
2.Famous factory ---- We have been the supplier of 2008 Beijing Olympics China .
3.Quality--- We have strict quality control system with 5 steps of inspection to assure the stability of quality.Certificated with CE,CCC,ROHS,FCC,CB and so on .
4.Competitive ---- we focus on help our customers to build their brand name to be the famous brand in their country .
5.Excellent R&D team---Lead by 2 engineers who has more than 15 years R&D experiences and 3 engineers who has 6 years R&D experiences.
6.Professional and mature sales team :The operation experience is rich , good english level , familiar with each foreign trade process which ensures no error in order process .
7.Products positioning :With several years experience in brands operation and been to many countries for market researching , we can help our customer do exactly prouducts positioning toghether .
Our Products:
Speaker :Ceiling speaker,wall speaker,horn speaker,column speaker,garden speaker,project speaker, professnial speaker and so on .
Amplifer:Mixer amplifier, power amplifier,pure amplifier,professianl amplifier and so on .
Our market :
Get a high reputation all around the world.
Why choose us:
1.We focus on speakers and amplifiers product over 10years
2.Your reliable speakers and amplifiers OEM /ODM partner .You can be confident ,because we are trusted in quality .
3.We have gained many international certificates ,.Such as CE,CCC,ROHS,FCC,CB and so on .
4.Our Factory covers an area of12,000 square meters and has more than 200 employees.
Contact Information:
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GUANGZHOU LINGYIN ELECTRONIC CO.,LTD
Add::Linyin Industrial Park,Menkoutian Street,Longhu,Shijing Town,Guangzhou City,Guangdong,China, 510430.
Website: lingyin.en.made-in-china.com,
http://lingyin.en.made-in-china.com,
http://lingyin.en.made-in-china.com.
Audited Supplier 
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