Grace Design M103 Channel Strip, 12 position gold plated rotary gain switch, Ribbon mic mode, 3-band presicion EQ, fully parametric mid band, peak and shelf mode for hi and low bands, optical compressor, Mic amp direct output, EQ/COMP section line input, Sealed gold Contact relay for Hi-Z input switching, Built in power supply, +48V Phantom Power, 10 segment meters for gain reduction and output level, Connections: 1/4 inch TRS instrument HI-Z input, XLR microphone input, balanced XLR direct output, 1/4" direct output of the mic pre section, balanced XLR Line input, balanced XLR Main output, balanced TRS output, unbalanced 1/4" output, 19" 1U