The klark teknik DN800 is an analog crossover with many configurations possible. Not as easy to tweak as just turning a knob. The advantage to card based crossovers is that there is very little drift or error in the set crossover frequencies as you can get with pots and the silk screening on the front panels. Suitable for recordings studios and fixed installations it can be configured for various system setups including four- input two-way or two- input 3/4 way systems. The DN800 is known for it’s high quality sound flexibility and precision frequency selection throughout plug-in cards. Here’s a more detailed breakdown. The DN800 can be used as a four-input, two-way crossover or a two-input, three or four-way crossover. Plug-in cards are used to set the filter frequency and slope characteristics. Each band has an adjustable VCA limiter, with time constants optimized for the frequency range. Plug-in filter cards offer selectable slopes (12, 18, or 24 dB/octave) and responses (Linkwitz-Riley, Butterworth, or Bessel). The DN800 includes phase adjustment controls for fine-tuning between bands and a phase reverse switch for each output. A mono bass facility sums the low-frequency bands (1 & 5) to mono, often used with subwoofers. Front panel controls (excluding gain and mute) are recessed and covered by security plates, with optional overall security covers available. The DN800 uses high-precision components and is built to Klark Teknik’s standards of quality and reliability. Balanced Inputs and Outputs. All inputs and outputs are electronically balanced, with optional output balancing transformers. A fixed 18dB/octave subsonic filter at 30Hz provides additional driver protection. The DN800 is suitable for a wide range of audio applications, including. In live sound systems, it can be used to split the audio signal into different frequency bands for optimized speaker performance. It can be used for precise signal routing and processing in recording and mixing environments. The DN800 is suitable for installed sound systems in venues like theaters, clubs, and performance spaces. In essence, the Klark Teknik DN800 is a powerful and flexible active crossover known for its sound quality and precision, making it a popular choice for professional audio applications.