Fantastic mic pres for a low cost per channel.The I/O Modules are the sound and soul of Symphony I/O, and represent 25 years of Apogee R&D and design excellence. These powerful Modules deliver Apogee’s core competency, superior sounding digital audio recording. With five available I/O Modules, you can choose from standard configurations or customize the following: channel count, analog to digital input, digital to analog output, mic preamps and digital I/O. You compose your Symphony I/O.Apogee Symphony I/O 8 Mic Pre Amp Module FeaturesMic PreampsEight digitally controlled, 85dB microphone preampsUpgrades functionality of Analog I/O Module by adding mic preamps to the existing line inputsCreates a direct connection between the Mic Preamp Module and the Analog I/O Module by inserting a mic preamp stage before the line inputsInputsFour Hi-Z 1/4” instrument inputs capable of handling high level instrumentInsertsEight fully balanced insert pointsSend 1-8 and Return 1-8 on 2 DSUB 25-pin connectors