The Heco Odeon 400 is a 3-way bass reflex floorstanding speaker that was manufactured between approximately 1997 and 2001. It features a sleek design available in black, silver, and alder finishes. With dimensions of 1020 mm in height, 224 mm in width, and 320 mm in depth, it has a weight of 19 kg. The speaker is equipped with two 160 mm cellulose membrane woofers, a single polycarbonate dome tweeter, and is designed to handle a nominal power of 140 Watts and a music power capacity of 220 Watts. Efficiency is rated at 91 dB/1W/1m, allowing it to deliver a frequency response range from 21 Hz to 32 kHz, making it capable of reproducing low bass notes as well as high frequencies. The impedance is rated at 4 Ohms, and it includes gold-plated connectors for easy and reliable connectivity. A removable front cover adds to its aesthetic and functional appeal.