Martin Wisman // EFX 256 - 32 bit/256DSP Multi-Effect Processor Specifications32 bit/256DSP multi-effect processor SMD technology, stable operation LED display, three memory functions, convenient operation Frequency Response: 20 Hz ~ 20 kHz + / - 1.5 dB Distortion:

Martin Wisman // EFX 512 - 32 Bit/256 SMD DSP processor technology2 x 256 Digital Multi-Effects Processor. • 32 Bit/256 SMD DSP processor technology • stable operation • LED display • comfortable control • Frequency response: 20 Hz to 20 kHz + / - 1.5 dB • Processor: 32 Bit/256 DS...

The X3L is an active frequency crossover enabling 2 or 3-way stereo or even 4-way mono operation.