I have moved from separates to an integrated amp and so no longer need my Krell Evolution 222 line level preamp. Top of the line a couple years back, this preamp is in excellent condition with minimal signs of wear. The unit works perfectly and sounds wonderful. The EVO222 has multiple inputs, including balanced, rca and CAST connectors for use with compatible Krell components. The volume knob is smooth as silk. Overall this exudes quality as you would expect from a preamp that retailed near $10K.