Hi John,
What brand and model of speakers are you planning to use? The most common type of active speakers I deal with (other than B&O) are Meridian and these can vary in their suitability. It is worth bearing in mind that some Meridian models are designed for balanced audio inputs, which adds a degree of complication when connecting to the unbalanced outputs of the Beosound 9000. Other brands of active speakers (eg. Dynaudio) can also be connected, but some adaptation may be needed.
Please give as much information as much as possible about what you are planning to connect and we'll do our best to help! 
Best regards,
Steve.
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