This is a genuine BMB, Best Music Brand, product. The new BMB DAR-350H is the new standard in sounding amplifiers available for karaoke and can power up to 2 speakers with up to 700W (RMS) of power. This machine has been rigorously tested for quality and can play many hours reliably easily making the DAR-350H perfect for karaoke venues or your performance. With simple connections, the DAR-350H can be setup to you be used in your home as well. This advanced system will make sure your audio comes through flawlessly. Best when paired with a set of BMB speakers matched for the DAR-350H’s power level. This BMB Digital Amplifier has more than 5 kinds of sound effects including standard POPULAR, PRO, ROCK, THEATER, or CUSTOM. Howling Control Function (Feedback Elimilator) One of the main functions of this BMB Amplifier is to effectively inhibit howling, protect speakers, and enhance smooth sound when you are singing. 13 Procedure Sandhi degrees Plus or Minus 3.0 Audio Functions This BMB amplifier has a 13 procedure sandhi degrees plus or minus 3.0 audio function. It increases the range treble and bass can be adjusted. Voice Conversion Function BMB Digital Amplifier with voice conversion function changes the male and female voices to compliment one another which greatly enhances karaoke recreationality. PC Editor This allows YOU to be in control of the BMB DAR-350H. When you connect your DAR-350H to a laptop through RS-232 port (cable not included), you will have access to all the fine tuning available to this mixing amplifier from the Mic EQ to Music EQ and everything in between. Dual Bluetooth Allows Bluetooth connection from two different smart devices. HDMI Ports (2-in and 1-out w/ARC) Connects to HDMI devices like the Karaoke Machine, Gaming Console and many more. With the ARC function, even your TV audio can be output through DAR-350H. USB Port Enables you to play favorite songs right from the USB memory device. IOS and Android App Download the application on your smart device and control your DAR-350H right in the palm of your hands. Background Music (BGM) Volume Adjustment. Recording Balance – Adjust between music and microphone volume. Rec/Play Mode On/Off Switch. Microphone 3 Echo On/Off Switch. Balance between SP 1-2. Microphone Tone Controls with Echo Select. 350W x 2CH (8 ohm). Main Pitch Degree: 13 degrees � 3.0 DSP. Audio Input: 4 Systems. HDMI Input: 2 Systems. Mic Input: 4 Total. USB Input: 1 port (for music only). Audio Output: 1 system (RCA) L/R (Can be switched to pre-out/subwoofer out). HDMI Output: 1 system (with ARC function). 6 bands Output L/R. FBE (Anti-Feedback): 5 levels/OFF. LCD Display: 4.3 inch TFT Color LCD. AC110V-120V (50/60 HZ): DAR-350H(SE)-100. Dimensions(mm): 420 (W) � 102 (H) � 290 (D). Weight: 10.5 kg or 23.1 lbs. Remote Control (RMR-350): One included with the unit.