The Edifier MR4 is equipped with the 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 tweeter can radiate sound more accurately with the wide dispersion pattern. The Edifier MR4 studio monitor utilizes 4-inch low-frequency diaphragm woofers to produce a strong bass with an accurate overall sound. And the diaphragm adds MICA to keep the original gentle and soft hearing sense and enhance the low frequency and extend the depth of bass at the same time. The strong and durable MDF wooden cabinets can minimize acoustic resonance and rendering effect effectively to restore the original tone. 1/4-inch (6.35mm) TRS balanced input: Used for connecting to the audio interface, mixers, audio production devices, etc. RCA unbalanced input: Used for connecting to personal music players, desktop computers, CD players, etc. 9/64-inch (3.5mm) AUX unbalanced input: Used for connecting to mobile phones, tablets, etc. Headphone output: Used for connecting to headphones. Professionally fine-tuned to an appropriately neutral, flat response to naturally present the sound of the recording/mix-in-progress, which improves the accuracy of recording levels, mic placement, mix balance, EQ, mastering processing, etc. Adopting TI high-quality ADC chipset, the SNR can reach up to 99dB. And the built-in DSP (digital signal processor) can complete sound adjustment together with TI digital power amplifier TAS5713. Rotate the knob to adjust the volume Long press to power on/off Short press to change sound modes Red indicator light: monitor mode Green indicator light: music mode SPECIFICATIONS 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 Active Speaker Size: 140 x 228 x 197.5 mm Passive Speaker Size: 140 x 228 x 184 mm Product Weight (Net): 4.5kg Devote to offering solid & cost-effective audio products. We define ourselves as the presenter of the latest audio technology. We deliver outstanding sound experiences through a wide range of home sound, professional audio, headphones for personal entertainment and professional use With over 25 years of dedicated research and operation in the Audio business, we have developed comprehensive capabilities in product design,testing and manufacturing. Visit the Store Visit the Store Visit the Store Wireless WiFi Audiophile Active Speakers Works with Alexa, Supports AirPlay 2 WiFi Smart Speaker Works with Alexa, Supports AirPlay 2 Powered Studio Monitor Speakers Active Bluetooth 2.0 Bookshelf Speakers