AIYIMA S4000 Active Bookshelf Speakers 2.1, 80W RMS Professional Studio Monitor with 4" Woofer, Bluetooth 5.0, XLR & RCA Inputs, Subwoofer Output, Bluetooth Speaker for PC,Studio and Home Theater

• 【2.1 Active HiFi Bookshelf Speakers】:AIYIMA S4000 active speakers feature a professional-grade dual-amplifier (Bi-Amping) architecture (TPA3118 ×2 independently driving the mid-bass drivers, AD2178 ×1 specifically driving the tweeter), paired with a 1.25-inch horn-loaded silk dome tweeter and a 4-inch mid-bass driver, achieving a balanced sound performance with powerful bass, clear midrange, and transparent treble. Suitable for use as living room/computer/home theater HiFi bookshelf speakers.
• 【Horn Tweeter + 45Hz Deep Bass】:With a total output of 2 × 40W RMS (2 × 25W mid-bass + 2 × 15W tweeter), S4000 Bluetooth bookshelf speaker offers balanced and dynamic sound. The specially designed horn-loaded tweeter significantly improves resolution and vocal clarity; the L-shaped bass reflex port design ensures smooth airflow, reduces distortion, and allows for bass extension down to 45Hz, bringing you deeper and purer bass.
• 【Professional XLR Balanced Input + SUB OUT Bass Expansion】:AIYIMA S4000 features a professional XLR balanced input with strong noise immunity for direct connection to mixers, audio interfaces, and electronic keyboards. It also supports RCA input and Bluetooth 5.0. The built-in SUB OUT allows easy expansion into a 2.1 speaker system, making it ideal for studio monitor speakers, desktop setups, small studios, and home entertainment.
• 【15mm MDF Cabinet+Integrated Control Knobs】:Constructed with a 15mm high-density MDF cabinet, the S4000 effectively reduces resonance and distortion for cleaner, more stable sound performance.The speaker integrates a combined volume and input-mode control knob, along with independent bass and treble adjustment knobs, allowing precise sound tuning based on different audio sources and personal listening preferences.
• 【Bluetooth 5.0 & 20-Meter Wireless Remote Control】:Built-in Bluetooth 5.0, providing a stable, low-latency wireless connection experience. It comes with a wireless infrared remote control, supporting a control distance of up to approximately 20 meters, even through obstacles, allowing for easy volume, mode, and playback control, providing you with a more convenient daily user experience.

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