User guide
Engineer 418 & 818 User Manual  Page 12 
2. Products 
The Martin Audio Engineer product line comprises 2 products and 2 accessories. 
Engineer 418 
4 input-8 output  advanced audio Digital Signal Processing device. 100-240V AC input. Housing is 19” rack 
mounted. Audio in-  and outputs on balanced Phoenix terminal blocks. RS485 interface for remote control 
panel and third party control connection, RS-232 interface for extensive PC-based setup and control. 
Engineer 818 
8 input-8 output  advanced audio Digital Signal Processing device. 100-240V AC input. Housing is 19” rack 
mounted. Audio in-  and outputs on balanced Phoenix terminal blocks. RS485 interface for remote control 
panel and third party control connection, RS-232 interface for extensive PC-based setup and control. 










