Product Name: Professional Multi-Function Pre Effect Processor W/Bluetooth/MP3 Player/FM Tuner Model NO.: PRE-18B Element Number: Monoamplifier Voltage: 110V or 220V Function: Post Amplifier, Amplifier Combined, Pre-amplifier Tube Type: Transistor Amplifier Used For: Professional Usage: Hi-Fi, AV, KTV System, Stage Type: Pre Effect Processor Product Name: Pre Effect Processor Certificates: Ce, RoHS Application: KTV, Club Show, Party, Band, Church Warranty: One Year Service: OEM ODM Support ;After-Sale Service Trademark: Ray Transport Package: Carton Package Specification: 480 x 85 x 45 mm Origin: Guangzhou, China HS Code: 8518400090 Product Description PROFESSIonAL PRE-AMPLIFIER w/ BLUETOOTH/MP3 PLAYER(USB/SD)/FM TUNER/LCD DISPLAYFunctions and Features:*Attractive aluminum Design and cost-effective series *1U standard design w/ mature circuit and excellent performance *USB Flash & SD Memory Card Readers *TRS microphone Inputs w/ volume controll *Music tone (Bass, Middle , Treble and Balance) control *3.5mm Aux input & Aux RCA Stereo Inputs *Left and Right XLR speaker outputs *Aux RCA 1/2/3/4 input and Monitor RCA input & output *Radio Station Memory: 60 Station Presets *Digital File Type Compatibility: MP3, WAV, WMA, APE and FLAC Product DetailWhy choose us?1.One year warranty, free accessories. If there are quality problems, provide pictures or video, engineers judge the problem and provide after-sale support Products.2.We are 10 years manufacture about professional audio speaker and power amplifier. And our engineers have 10 years work experience, very professional.3.We has always attached great importance to quality control since we know that quality is of vital importance to the sustainable development of our company. We have awell-trained professional quality control team who carries out the strictest quality control methods from raw materials incoming, online inspection, out inspection and QA.4.We focus on middle and high-end items and ensure every product made by the the superior material. We have strict quality control system to avoid quality problems.5.There are many types you can choose, if you have you own designed idea, we also accept the OEM order.6.Products with CE ROHS certification.If you are interested in our products, please contact us