This interactive 2 channel Compressor/Limiter/Expander/Enhancer counteracts the adverse effects of compression. Dynamic Enhancer circuitry has been designed to ensure that your music retains its brightness no matter how much compression you apply. In Auto Mode, program dependent Attack and Release times are calculated in real time, so no time is wasted in set up and giving you optimum performance. Manual Mode still gives you fully adjustable Attack and Release. perfect for PA systems, and Broadcast, TV or Recording studios.