Powerful 2.1 class-D amplifiers
Internal universal power supply
Seamless, quiet switching between AC and DC power
DC mode using just six D-cell batteries

Customize drivers
Two 80-mm wide-range
One 130-mm woofer

Acoustically tuned enclosure
Sealed and tuned resin chamber Sealed, acoustic suspension for mid-range system Dual voice coil, ported bass reflex design for bass system

Performance
Frequency response: 53Hz to 16kHz ± 3 dB
Maximum peak sound pressure level: 108 dB at 1 m (AC); 102 dB at 1 m (DC)

iPod integration
Compatible with all iPod models with a dock station through the integrated Universal Dock (dock adapters included)
Compatible with iPod shuffle and iPod models without a dock connector through the Aux input port (audio cable including) Charges iPod via dock connector
Tone Control in speakers menu provides additional EQ settings specifically Input port accepts analog 3.5 mm stereo minijack or S/PDIF optical digital miniplug

Size and weight
Height: 6.6 inches (167.6 mm)
Width: 17.0 inches (431.8 mm)
Depth (including grille): 6.9 inches (175.3 mm)
Weight (without batteries): 14.5 pounds (6.6 kg)
Weight (with batteries): 16.7 pounds (7.6 kg)

Timing power on/off by iPod music or radio