Picture Shown With optional IMOD Transformer upgrade
581 Microphone Preamplifier
IMOD(Mic Transformer Upgrade)
The 581 is a 500 series, discrete, Class ‘AB’ mic preamp module with an extraordinary sonic signature never before obtained at this price level. Its clarity and incredibly solid low end is reminiscent of renowned classic designs. Rich, warm, and musical, the 581 provides detailed results.