This list contains all microphone models that helix will contain when it is shipped. The right column shows the real mics they are based on. Model Based on 57 Dynamic Shure® SM57 409 Dynamic Sennheiser® MD 409 421 Dynamic Sennheiser® MD 421-U 30 Dynamic Heil Sound® PR 30 20 Dynamic Electro-Voice® RE20 121 Ribbon Royer® …