The DALI SUB E-9 F subwoofer redefines what is possible at this price point. Featuring a 9-inch woofer made from pure aluminium, the SUB E-9 F can move a lot of air with power and precision to deliver an exceptionally dynamic performance in an elegant enclosure. -High-performance amplifier DALI subwoofers have the endurance to maintain high-performance output and the headroom to handle even the most demanding audio. -Flexible connectivity With LFE and LINE inputs, DALI subwoofers are compatible with almost any amplifier or receiver. -Elegant, simple design The enclosure and driver are perfectly matched to deliver powerful bass performance. -Eliminating vibrations To eliminate unwanted vibrations, the enclosure is raised from the floor by four oversized polymer-based spikes.