In used condition. My sound tec said that the ribbon cable inside needs attention, but it works, sometimes needs a bang on top, which explains the ribbon cable problem. Anyway this is an excellent crossover and it has served me well. Any questions please ask? Following the worldwide success of the DX 26 loudspeaker system’s digital processor,  LEM announces the new dx 26 plus, a further improved version of this processor which, thanks to the introduction of new features and technical solutions, represents a new market reference for this kind of products. dx 26 plus shares with his predecessor the use of the custom 40bit DSP RED 208, the 2IN- 6OUT configuration, the excellent acoustical performances and the very complete function set: - Bessel, Butterwort and Linkwitz/Riley crossover filters up to 48db/oct. - Five parametric EQs for each input and output; - Delay lines and phase control for each input and output; - Digital limiter for each output; - A slot for a MEMORY CARD to be used for the preset’s storage and for an easier upgrade of other units; - STEREO DIGITAL INPUT in AES/EBU format; - RS232 and RS485 serial interface for the remote control and the link of more units. In comparison with the previous model, the innovations introduced in the dx 26 plus include: - The use of latest-generation 24bit converters for a better dynamic range and improved S/N ratio; - NOISE GATE filters on the inputs; - The possibility to use the output’s LIMITERS also as COMPRESSORS; - The use of relays on the outputs to cut completely any noise when the unti is switched ON or OFF; - An improved and more reliable internal memory management. In addition, the dx 26 plus features a complete remote control capability by means of the DX EDITOR PC dedicated software, which allows any parameter to be displayed, modified and printed using an extremely simple and intuitive interface.