D-251

D-251 Tube Microphone Kit – Classic ELA M 251-Style Tube Microphone Design

Build your own ELA M 251-style tube condenser microphone with the D-251 Tube Microphone Kit, a premium DIY project inspired by one of the most celebrated microphones in recording history.

Designed for builders who want openness, air, detail, and elegant tube character, the D-251 delivers the spacious top end, smooth mids, and polished studio sound that made this style of microphone a favorite for vocals, acoustic instruments, overheads, and high-end recording applications.

Built around the legendary CK12-style capsule platform, the D-251 faithfully follows the classic 3-pattern tube microphone approach, with pattern switching achieved through relays for true cardioid, omni, and figure-8 control via the PSU remote switch, just like the original concept.

The D-251 is also an excellent platform for builders looking to upgrade an APEX 460, requiring only minor modification to the microphone’s internals. For transformer flexibility, it supports AMI T14, Cinemag 13114, and other compatible T14-style transformers, giving you the freedom to tailor the final character of your build with proven components.

Features:

✔ Classic ELA M 251-Style Tube Circuit – Inspired by one of the most admired tube microphone designs ever made.
✔ Open, Airy Studio Sound – Built for detail, elegance, warmth, and refined high-end recording performance.
✔ True 3-Pattern Operation – Relay-based switching for cardioid, omni, and figure-8 control via the PSU remote switch.
✔ CK12-Style Capsule Platform – Designed for the classic capsule style associated with the legendary 251 sound.
✔ Transformer Flexibility – Compatible with AMI T14, Cinemag 13114, and other suitable T14-style transformers.
✔ Excellent APEX 460 Upgrade Path – A strong choice for transforming the APEX 460 into a more serious tube microphone project.
✔ Premium DIY Microphone Platform – A rewarding build for those seeking a high-end tube condenser microphone with timeless appeal.

Whether you are upgrading an existing microphone or building a premium ELA M 251-style tube microphone from the ground up, the D-251 gives you a proven path to a microphone with timeless tone, elegant tube depth, and professional appeal.

Build your D-251 and bring classic tube studio air and elegance to your next session. 🎙️

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