For years, the American Professional Institute (API) has been a leader in the audio industry, known for its high-quality analog gear that delivers unmatched sound and reliability. Their latest offering, the ASM164, is a 16-channel analog summing mixer that brings API's renowned summing performance into a sleek, 19-inch rackmount format. With the design based on the summing section of THE BOX® Console, the ASM164 is a powerful tool for professional project studios, home studios, and production facilities of all kinds.

Designed for Flexibility, Built for Performance

The ASM164 was engineered with the professional audio user in mind, providing the signature API sound in a cost-effective and compact design. Whether you're mixing at home or in a commercial facility, this unit delivers the clarity, punch, and warmth that API is known for.

One of the standout features of the ASM164 is its 16 analog summing channels, each with balanced, line-level DB-25 connectors, allowing for seamless integration into any existing setup. Whether you're working with a large console or using a collection of outboard gear, the ASM164 offers a straightforward solution for mixing multiple channels into a cohesive stereo output.

Powerful API Components at the Core

Like all API products, the ASM164 leverages the company's signature API 2510 input opamps and 2520 opamps, ensuring pristine sound quality and dynamic range. The inclusion of proprietary output transformers further enhances the overall tonal quality of the mix, adding that unmistakable API character that engineers have come to love.

The mixer’s 4-segment LED level meters allow for easy monitoring of signal levels, while the analog stereo output level VU meters provide clear, visual feedback during the mixing process. This ensures that users can maintain proper levels and avoid clipping in critical moments.

Streamlining Workflow with Convenient Features

In addition to its analog summing power, the ASM164 is designed with a number of user-friendly features that make it an invaluable asset in any studio:

• Global 0dB Channel Level Control Bypass – Instantly bypass individual channels to maintain a clean, balanced mix.

• Insert Send/Return on Each Channel – Integrate outboard processors, like compressors and EQs, with ease.

• 31-Step Detented Level Control – Provides precise control over volume adjustments, ensuring repeatable settings for perfect mixes.

• Continuously Variable Panning with Center Detent – Enjoy fine-grained control over the stereo field.

• 2 Stereo Program Buses – Mix-A and Mix-B – Flexibility to assign individual channels to one or both mix buses, ideal for different processing chains.

• Balanced Stereo External Input – Assign external sources to Mix-A or Mix-B for added versatility in your signal routing.

All of these features come together to offer an intuitive and efficient workflow that enhances your mixing capabilities.

Durability You Can Count On

True to API’s commitment to quality, the ASM164 is built with the durability and reliability that have made API products a staple in studios around the world. The unit is powered by an external power supply, ensuring that all of the components receive clean, consistent power for optimal performance. As with all API gear, the ASM164 is backed by a 5-year parts warranty, ensuring peace of mind for years to come. Additionally, it comes with a 1-year factory service warranty for added support.

A Perfect Fit for Modern Studios

“As we continue to enjoy success with THE BOX, we recognize that many customers simply don’t have the space for a console. The new ASM164 offers the summing power you need with all the API tone you’d expect,” said Larry Droppa, President of API. “Additionally, convenient features like the 0dB and inserts on every channel make this a great addition to your workflow.”

The ASM164 is a versatile tool that works equally well in a large studio setup or a small project studio. Its compact rackmount form factor ensures it fits into any space while offering exceptional audio quality and summing power.

Availability

The ASM164 is now shipping, and it’s available for purchase directly from API Audio. A full list of features and specifications, as well as more information about this exciting new product, can be found on the ASM164 product page at apiaudio.com.

API continues to deliver cutting-edge products that combine professional-grade performance with real-world usability. The ASM164 is the latest example of API’s commitment to providing the best in analog summing technology, now available in a compact and affordable package.