The SP1 from Golden Age Project is an all-in-one shock mount and metal pop filter that's compatible with the company's FC1 MKII, FC2 (FC2 ST), or FC3 condenser microphones. The shock mount in the SP1 helps to isolate the mic from stand vibrations, and the pop filter reduces plosives (popped consonants such as "p" or "b"), which are picked up by the mic during vocal recording sessions or performances.