Yochi Audio | EVE Audio Diaphragm Supplier

Air Motion Transformers

Hover over images to view Frequency Response Curves.

* All SPL data measured in our professional 2π anechoic chamber.

AMT Technical Series

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ART7040-0801

8.0 Ω

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ART7040-0802

8.0 Ω

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ART7040-0803

8.0 Ω

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AMT113S-0401

4.0 Ω

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AMT172S-0401

4.0 Ω

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AMT-ST139

8.0 Ω

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AMT040-0401

4.0 Ω

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AMT040-0402

4.0 Ω

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AMT040-0403

4.0 Ω

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AMT040-0404

4.0 Ω

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AMT065-0401

4.0 Ω

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AMT065-0402

4.0 Ω

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AMT065-0403

4.0 Ω

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Our Heritage: From Precision Manufacturing to Acoustic Innovation

At Yochi Audio, we don’t just supply components; we bridge the gap between decades of manufacturing heritage and the future of high-fidelity sound.

The Foundation

ZhongZhan Electronics

The bedrock of our expertise lies in ZhongZhan, our parent manufacturing facility located in the heart of China’s high-tech manufacturing hub, Dongguan. For over two decades, ZhongZhan has been the quiet force behind numerous international brands, operating as a specialist OEM partner.

With a legacy rooted in precision metalwork and complex driver assembly, the factory mastered the "habit of precision" long before the first AMT driver left the bench. Today, ZhongZhan provides the robust infrastructure and MIL-STD-105E quality control standards that ensure every Yochi product is built to last.

The Breakthrough

Yochi Engineering Lab

As the audio industry moved toward higher resolution and wider frequency responses, we realized that traditional manufacturing wasn't enough. We needed a dedicated space for "radical engineering."

Yochi Audio was established as our international technology gateway and R&D hub. Led by our Lead Engineer, Evan Yochi, Yochi Audio functions more like a specialized laboratory than a traditional sales office. It is here that we pushed the limits of AMT technology, resulting in our signature 12.5μm ultra-thin diaphragm—a technical milestone that allows our drivers to achieve a stable, linear response up to 50kHz.

The Feedback Loop

The Sette Brand

A great driver isn't just born in a lab; it’s proven in the ears of the listeners. To ensure our engineering remained grounded in real-world performance, we launched Sette, our dedicated consumer-facing brand.

Available via AliExpress, Temu, and TikTok, Sette serves as our global "market-testing arm." By putting our standard AMT units directly into the hands of thousands of audiophiles and DIY enthusiasts worldwide, we gather immense amounts of real-time data and subjective feedback.

Why It Matters to You

When you partner with Yochi Audio, you aren't dealing with a middleman. You are accessing a complete acoustic ecosystem. Whether you are sourcing a standalone diaphragm for your own housing or a full-assembly AMT tweeter for a flagship monitor, you are getting a product that has been:

Engineered

In the Yochi Lab for peak performance.

Manufactured

By ZhongZhan with 20 years of ISO-standard expertise.

Market-Proven

By the global Sette community.

Welcome to the next level of AMT technology.

Precision AMT Engineering
From Lab to Scale.