i have multiples of this unit available, price is 1500uks or fair offers. unit costs 2800 plus tax new. the programmable digital audio toolbox b40 is a professional studio device for simple processing of 4 digital audio channels. it is easy to change, to process and to rearrange up to 4 signals. level corrections for stereo or quad mixes, channel swapping, fades - efficient and fast done with the toolbox b40. it is not necessary to use a production mixer for duplication, dubbing or simple editing - b40 has the functionality. b40 can be used as remotable and programmable audio breakout box in digital video systems. the unit is easy to operate and requires only a limited number of settings for fast and efficient audio production. url