Anyone that owns a 500 series rack needs to take a serious look at filling a slot or two with an A Designs pre. The only question is which one. The Silver is not one of the brighter pres of their line but it may fill the task for tracking bass guitar, keyboard or other line level devices such as a kick or vocal than needs a little extra beef. Rest assured there is no source that this pre will not work well on and A Designs is a company with a spotless reputation when it comes to quality.
A Designs EM Silver 500-Series Preamp
at Front End Audio