Is your gear 'green'?

Yes, very green. The DM10s consume about the same average power as a 40W light bulb when playing music at normal domestic listening levels and by combining all the electronics into the speaker cabinets we save a huge amount of materials. They have a long life expectancy and use industry standard parts that should be available for many years to come. DM5s consume even less power and automatically switch into a low power standby if not used for 30 minutes.

I don't know what 'active' means. Please help.

It means having one amp per drive unit; the crossover function is performed by processing the line level signal to the amplifiers using active filters. This should not be confused with the cheaper 'powered speakers' that are sometimes incorrectly described as being 'active', in these speakers there is just one amplifier and a passive crossover feeding the drive units.

Do I have to use an Apple computer with ADM9s?

No, you can use anything with an optical output. Our customers get very good results with a range of sources, including Sonos, PS3s, Squeezeboxes, set-top boxes, CD/DVD players, and many other things. However, many make a switch to Apple computers because the whole family can use them with ease and because they are small and quiet enough for a modern living room.

Do I need a Subwoofer?

Most people cannot justify investing in a hi-fi system for replaying just music. Watching TV, movies and playing games are, for most people, at least as important as playing music. For these forms of entertainment the Subwoofer is necessary for replaying the low frequency special effects and most DM10 owners buy one. It also enhances the reproduction of music as well!