The X1 active crossover is your 1 piece solution to a myriad of multiple amplifier applications. This active crossover combines a 7 Volt line drive output, complex crossover design capability with absolute high fidelity in the most compact use of space possible. The front and rear panels are so jam packed with stuff that we couldn’t fit any more stuff, but we did get the whole 4-way stereo crossover which includes 7 individual 24dB/oct filters into a 1/2 DIN package. The X1 uses JRC hi-end op-amps for applications where the head unit and other system components are not fitted with Burr-Brown quality ICs.