This Microphone pre-amp/Mixer has been used on countless recordings by HQ|NORTHSTAR over the years and is only replaced because of the emegence of Battery powered equivalents by Sonodore. It served as a back-up for long but now can move on to someone else to serve it's original purpose. The unit has the unique transparent characteristics of all Sonodore products and guarantees state of the art recording quality when combined with top of the line microphones and cables.