The Audioengine S6 sets a new standard in performance to size.  With 210 watts of power in a small package that fits almost anywhere, the S6 is the ultimate bass extension for your desktop, home theater, or gaming setup.  By taking advantage of a front-firing woofer in a sealed box, the S6 delivers deep, smooth, and punchy bass that defies expectations. 
-Built in 210W (140W RMS) Highly Efficient Class D Amplifier
-6" front-firing woofer in sealed enclosure
-Frequency Response: 33-132 Hz +-1.5dB
-Continuously variable 40-130 Hz crossover
-Phase switch (0/180°)
-Line-level stereo/LFE RCA inputs
-3.5mm mini-jack input