ETL1 Circuit Kit

The ETL1 is a premium microphone circuit kit designed for electret capsules. Combine this circuit with our TSB2555 medium-diaphragm capsule to build a surprisingly versatile microphone for much less than the cost of a comparable commercial microphone. Video Tutorial We're posting step-by-step videos that illustrate the build process; see our ETL1 Video Series. About the Audio Circuit The ETL1 contains the same audio circuit as our acclaimed MP-V57 transformerless circuit kit. Both are based on the Schoeps CMC5, which is probably the most popular microphone circuit in the world. It is a circuit we've been improving and fine-tuning for seven years. What's the difference between the ETL1 and MP-V57? The ETL1 requires an electret capsule. The MP-V57 requires an externally-polarized capsule (such as our RK series of large-diaphragm capsules). Unlike most competing offerings, the ETL1 does not compromise the Schoeps design in its topology nor its components. It uses 1% tolerance resistors, l