Audio sound mixer 4 channel Made in England Audiotec sound products england ltd Audiotec Phantom-p. A 54 Weight: 11.6kg Dimensions: 50cm x 35cm x 14cm Year of manufacture 1997 Power lead included. For sale is my British made, 4 channel audio mixer by Audiotec. This is a very well made mixer and an expensive piece of equipment back in 1997. It has been thoroughly tested and all of the channels are clean and working well. I will take care to pack this well before posting and will include the power lead.