
T-84 Circuit Kit
Style: Transformer-coupled JFET Distortion: Moderate second harmonic Noise: Low Character: Saturated under moderate SPL Sensitivity: High Circuit Frequency Response: Flat Polar Patterns: Cardioid / Omni (via internal switch) Pad: 10dB (via internal switch) The T-84 is a premium transformer-coupled microphone circuit kit, designed as a DIY alternative to commercial single-stage JFET/transformer microphones. The core design is Neumann's KM84 circuit. We've taken it to the next level by implementing it with audiophile-grade components, a painstakingly selected and manually biased NOS JFET, and a custom-wound output transformer. We've discarded the parts of the circuit that were doing more harm than good, and added a few bits that Neumann probably would have if they'd had room inside the KM84 body. The finished mic has high output, carefully contoured harmonic coloration, and great tone. Pair it with our RK-47 capsule or RK-12 capsule to create a fantastic studio ins