excellent speaker set, very gently used. the best studio monitors on the market for audio files! purchased for $1,200 cables included 5.5" Carbon/Rohacell/Glass Fiber Woofer X-ART Tweeter 150W Class-A/B Biamplified Design XLR, RCA, and 3.5mm Inputs USB Port Volume and HF Controls Stereolink Feature Features The single, black ARTist 5 150W 5.5" Active 2-Way Monitor Speaker from Adam Professional Audio offers high-quality audio in a compact design. The speaker has a 5.5" basket woofer with a carbon fiber/Rohacell/glass fiber diaphragm and the acclaimed X-ART tweeter to provide pro-level audio with terrific clarity and a full frequency response. Its driver is powered by its own Class-A/B 50W RMS (75W Peak) amplifier to provide a strong performance with low distortion. The rear panel of the speaker has XLR, RCA, and 3.5mm inputs, allowing you to connect a variety of professional and consumer devices such as CD players, AV receivers, MP3 players, and much more. A USB port allows you to connect the speaker directly to a computer. In addition to main volume controls, the speaker also has a high frequency control that lets you fine-tune the HF levels. Compact Design The compact design is ideal for use in home, project, or mobile studios where high-quality audio is needed but space is a concern Carbon Fiber/Rohacell/Glass Fiber Woofer The speaker has a 5.5" basket woofer with a carbon fiber/Rohacell/glass fiber diaphragm to provide deep bass without unwanted coloration, thanks to the low weight and high rigidity of the diaphragm X-ART Tweeter Adam's acclaimed X-ART tweeter delivers ultimate treble precision and clarity Biamplified Design The driver is powered by its own Class-A/B 50W RMS (75W Peak) amplifier to provide a strong performance with low distortion Analog and Digital Inputs The rear panel of the speaker has XLR, RCA, and 3.5mm inputs, allowing you to connect a variety of professional and consumer devices such as mixers, CD players, AV receivers, MP3 players, and much more. A USB port allows you to connect the speakers directly to a computer Stereolink You can connect 2 speakers together with a single cable to share an input source, and give each speaker the capability to control the overall output volume of both speakers by using the volume knob on either speaker. This unique stereolink capability redefines traditional master-slave speaker configurations, because each speaker can be in control. This also allows for more simplified setup and easy setup changes HF Controls In addition to main volume controls, the speaker also has a high frequency control that lets you fine-tune the HF levels