I’m excited to introduce my latest product, the LUX70-MZ output audio transformer, specifically designed as a replacement and upgrade for Luxman MQ70 amplifiers. With the original transformers long discontinued and increasingly rare, I developed an electrically compatible solution that maintains — and in many cases exceeds — the performance of the originals. The LUX70-MZ offers a high-quality alternative that can be installed easily with only minor adjustments to the amplifier.
Main Features:
The LUX70-MZ output audio transformer has been precisely engineered to perfectly fit Luxman MQ70 amplifiers and provides the following key features:
- Compatibility and Performance Upgrade: Our transformers have been thoroughly tested and shown to deliver improved performance compared to the originals. With our product, users can experience a clearer, more detailed, and engaging sound. You can see the measured results in this article.
- Easy Installation: With only four mounting holes, the LUX70-MZ transformer can be installed quickly and securely. It requires minimal modifications to the amplifier chassis and a small tweak to the feedback network, ensuring a smooth and trouble-free replacement process.
- Versatile Use: Besides being a compatible replacement for the Luxman MQ70, the LUX70-MZ can also be used in custom projects employing EL34 tubes in push-pull configuration. This versatility makes it an ideal choice for audio enthusiasts who wish to design or customize their own amplifiers.
The LUX70-MZ output transformer is an outstanding option for those who want to enhance the performance of their Luxman MQ70 amplifier, or for builders designing a custom EL34 push-pull amplifier. With its high-quality construction, ease of installation, and flexible application, the LUX70-MZ is the perfect choice for demanding audiophiles seeking the best from their equipment. Below is the frequency response graph measured at 6 watts on the actual amplifier:
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Technical Specifications:
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To place an order, click here to contact me.
Dimension Reference


