This is a genuine BMB, Best Music Brand, product. The new BMB DAR HD series is the newest standard in sounding amplifiers available for karaoke. The new DAR-350HD2 gives you an option to power up to 2 speakers (350W RMS per channel). This machine has been rigorously tested for quality and can play many hours reliably easily making the DAR-350HD2 perfect for karaoke venues. With simple connections like the HDMI and the Optical inputs, the DAR-350HD2 can be setup for Youtube karaoke. This advanced system will make sure your audio comes through flawlessly. Best when paired with a set of BMB speakers matched for the DAR-350HD2’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-350HD2. When you connect your DAR-350HD2 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-350HD2. Optical Port Enables you to transform your Smart TV into Smart Karaoke. IOS and Android App Download the application on your smart device and control your DAR-350HD2 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). 700W x 2CH (8 ohm). 1400W x 2CH (8 ohm). Main Pitch Degree: 13 degrees � 3.0 DSP. Audio Input: 4 Systems. HDMI Input: 2 Systems. Mic Input: 4 Total. Optical Input: 1 port (for autio 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. Dimensions(mm): 420 (W) x 102 (H) x 290 (D). Weight: 10.5 kg or 23.1 lbs. Remote Control (RMR-350): One included with the unit.