Product Name: Profession PA Speaker Amplifier (DAMP2100) Model NO.: DAMP2100 Conductive Mode: AB Element Number: Push-Pull Amplifier Voltage: AC 220V Output Number: 4 Sound Channel: 4.1 Function: Pre-amplifier Tube Type: Transistor Amplifier Used For: Professional Usage: Hi-Fi Type: Professional Amplifier Trademark: ASM Transport Package: Standard Export Packing Specification: standard exporting pakcage Origin: Zhejiang China HS Code: 315000 Product Description Total frequency distortion: 20Hz-20kHz≤ 0.1%Signal noise ration≥ 95dBIntermodulation distortion<0.1%Working voltage: AC110V/220V 50-60HzDOUBLE TRACK OUTPUT: 8Ω 2*250W4Ω 2*500WBridgeale single track: 1000WSize: 480*425*88Weight: 8.5KGWho we are:Ningbo ASM manufacturing, has become one of the largest company specialized in Sub- woofer, Car speaker, ceiling speaker, boom box, Professional sound. Manufacture in China.The reason to work with Ningbo ASM manufacturing:1) Focus on every detail2) Full line PRO audio One-stop service3) Well quality control and guarantee (Free spare parts)4) Minimum OEM/ODM quantity request5) factory with Professional production technologyDrawing on the strength of this organization and our passion for detail, Ningbo ASM is committed to providing its customers with the quality products that represents the best value for our customers' audio investment. We are dedicated to your continued satisfaction.You can see us at 3 Tradeshows we will attend:NAMM IN JanuaryPALM EXPO Beijing IN MAYPROLIGHT + SOUND SHOW Shanghai IN OctoberShould you have any question or concern, please feel free to contact us @Tel: +86-0574-87037083Fax: +86-0574-87037085Your attention will be highly appreciated!