Opus 99 large diaphragm hypercardioid dynamic microphone, excellent for kick drum, but also good for bass amps, etc. Lots of positive reviews on the web. Opus 53 small diaphragm cardioid condenser microphone, great for drum overhead, hi hat, horns, etc. Both in excellent condition, used only in smoke-free studio. See web for many positive reviews. $140 for Opus 99, $70 for Opus 53. $200 for both.