The MR4 upgrades your listening experience by providing a professional sound performance, and its compact size makes it an ideal solution for any small space. Utilising 1-inch silk dome tweeters to produce a smooth and high-frequency sound, and the special coating added on it ensures a more natural and refined treble. The MR4 adopts 4-inch low-frequency diaphragm woofers with MICA to produce a stronger bass with a more accurate overall sound. The strong and durable MDF wooden cabinets are designed to restore the original tone by minimizing acoustic resonance and rendering effect consistently. Equipped with multiple connections including, a 1/4-inch balanced TRS input to connect to the audio interface, mixers, etc, an RCA unbalanced input to personal music players, desktop computers, etc. and an Aux unbalanced input to mobile phones, tablets, etc. The MR4 also feature a convenient headphones and aux output located on the front of the active speaker. A multifunction control knob on the front of the active speaker allows you to rotate the knob to adjust the volume, long press to power on/off and a short press to switch sound effect mode (monitor or music). Features • Smooth frequency response for great audio reference • 1-inch silk dome tweeter and 4-inch diaphragm woofers deliver pure sound • Supports TRS balanced input, and AUX/RCA unbalanced input connections • Monitor and music modes to fit both fun and professional listening Specification • Input Sensitivity: TRS balanced input: +4dBu, AUX/RCA unbalanced input: -10dBV • Power Output: 21W+21W • Frequency Response: 60Hz-20KHz • Signal-to-noise Ratio: =85dBA • Distortion: =0.2% • Treble Unit: 1 inch • Woofer Unit: 4 inch • Speaker Size: 140 x 228 x 197.5 mm