Sure to note in the order. DS500 amplifier suitable for impedance 4ohms or above. How to match this amplifier with your speaker?
Under certain impedance conditions, amplifier's power should be 1.5-2 times that of the speaker. So DS500 suitable for the speaker rated power around 300-350W. DS500 match with Single 12inch BMB karaoke speaker / single 10inch/12inch professional PA speaker/ Single 15inch(RMS power below 350W, 75 Core).
What amplifier transistor do you use? We use MOSFET transistor, 2pcs transistor per channel. Sound is very clear and strong!Output power 1KHZ 1% Clipping Power 230V: 8Ohm Bridge Power : 1700 Watts 4Ohm EIAJ(Japan standard) Stereo RMS Power : 950Watts 2 8Ohm EIAJ(Japan standard) Stereo RMS Power : 560Watts 2 4Ohm Stereo RMS Power : 900Watts 2 8Ohm Stereo RMS Power: 500Watts 2???? S/ratio(A weighted): 100dB Frequency response: 20Hz-20KHz (+0DB, -1.5DB) Distortion(typlcal)300Hz 1DB Below Rated Power: less than 0.05% Input Sensitivity: 0.775V Voltage Gain at 8ohms : 0.775V Damping factor: >300 Input impedance: balanced 20Kohms, unbalanced 10Kohms Maximum input Level: 20DB 10V Input connectors: 3-pin XLR balanced Output Connectors: Speaker Binding posts Amplifier and load protection: Short circuit, Themal, Limited DC protection Controls and indicators on Front panel: AC power switch, Independent gain controls, Red clip leds, proportional, 1% THD threshould green signal leds, Threshould -35DB Blue power Led, AC on Control on back panel: (Mode Switch): Stereo / Parallel / Bridge Dimension of Unit: 44.5483200mm Packaging size : 117545265 mm Height: 1U Mains power supply: 220-240V50Hz / 110-120V60Hz (70-280V MAX). Tulun play is a brand of chinese factory directly, we are doing business with world-wide customers since 2007 and now we expand business to B2C (business to customer)field. We already constructed warehouse in USA and Germany, we are going to offer more local service for you in the future. Currently we have warehouse in China, USA, Germany. European orders will be sent from Germany warehouse. Please leave message to us about your country's power plug and voltage. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Amplifiers". The seller is "trust-electronics2007" and is located in this country: US. This item can be shipped worldwide.