The Sony SA-EX200 is very special because it's a loudspeaker with an active electrostatic tweeter. It combines the bass of a bass reflex speaker with the clear high of a real high voltage electrostatic tweeter. The normal speaker is driven from your regular amplifier, the electrostatic tweeter is driven from the built-in amplifier. Intended for the TA-EX100 or TA-EX90 amplifier, but any amplifier will work also. Tested: The speakers are fully functional and have been tested. Matcht pair. Specs: Model: Sony SA-EX200 Type: Active Speaker System Power Output: 30 watts per channel Speaker Configuration: 2.0 channel Frequency Response: 45 Hz - 20 kHz Impedance: 6 ohms Drivers: Woofer: 13 cm cone type Tweeter: 2.5 cm dome type Input Sensitivity: 500 mV Inputs: RCA (Line in) Power Supply: AC 220V-230V , 50-60Hz Dimensions (H x W x D): 28 x 17 x 23 cm Weight: 4,5 Kg each Additional Features: Bass reflex design for enhanced low-frequency response Built-in amplifier. These speakers are known for their dynamic sound and elegant design, making them suitable for both home theater systems and high-fidelity music listening. Working condition: fully working (See pictures for the cosmetic condition of this lot) Missing or damages: Minor Usage Marks Does come with power and speaker cable. Carefully shipped insured