D-87 Microphone Kit – Classic U87-Style FET Microphone Design
Build your own U87-style FET condenser microphone with the D-87 Microphone Kit, a premium DIY project inspired by the classic transformer-coupled U87 circuit.
Designed for builders who want professional studio sound, the D-87 delivers the balanced tone, detail, and versatility that made this style of microphone a recording classic. Paired with a K87 double-isolated capsule, it supports cardioid, omni, and figure-8 patterns for a wide range of recording applications, from vocals to instruments and room capture.
The circuit is compatible with BV13-style transformers, including trusted options such as the AMI T13 and Cinemag 13113, giving you the freedom to shape the final character of your build with proven transformer choices.
Features:
✔ Classic U87-Style FET Circuit – Inspired by one of the most respected studio microphone designs ever made.
✔ Multi-Pattern Capability – Works with a K87 double-isolated capsule for cardioid, omni, and figure-8 operation.
✔ BV13-Style Transformer Compatibility – Supports proven transformer options including AMI T13 and Cinemag 13113.
✔ Studio-Grade Versatility – A strong choice for vocals, instruments, and general recording applications.
✔ Premium DIY Microphone Platform – Ideal for builders seeking a serious FET condenser microphone project.
✔ Professional Results – Build a microphone with classic character, flexibility, and refined condenser performance.
Whether you are building your first serious FET microphone or taking on a premium custom project, the D-87 gives you a proven path to a professional large-diaphragm condenser microphone with timeless studio appeal.
Build your D-87 and bring classic studio sound to life. 🎙️
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