API ASM164 Summing Mixer

The API ASM164 is a 16-channel rackmount analogue summing mixer that delivers API’s renowned sonic performance and precision in a compact 19-inch rack format, complete with balanced DB-25 connectors, proprietary API 2510 and 2520 op-amps, insert send/return capabilities on every channel, dual stereo program buses (Mix-A and Mix-B), comprehensive rear-panel connections, and an external power supply.

Uncompromising Analogue Summing in a Compact Format

Designed for professional project studios, home setups, and production facilities, the ASM164 offers the legendary API sound in an efficient and cost-effective package. Drawing its design inspiration from the summing section of THE BOX® console, it caters to those who demand high-quality summing without the need for a full recording console. The device provides 16 analogue summing channels with balanced, line-level DB-25 connectors, ensuring seamless integration into modern studio environments. Each channel features continuously variable panning with a centre detent for precise stereo placement and a 31-step detented level control to maintain accurate adjustments.

Enhanced Workflow and Versatility

Every channel includes an insert send and return, enabling users to incorporate outboard gear into their workflow effortlessly. The global 0dB channel level control bypass further enhances flexibility, allowing users to manage gain staging and preserve the integrity of the original audio. Dual stereo program buses, Mix-A and Mix-B, provide routing versatility, with each channel assignable to either or both buses. Additionally, a balanced stereo external input can be assigned to Mix-A and/or Mix-B, expanding the mixer’s utility for complex setups.

Precision Monitoring and Output Control

The ASM164 ensures precise monitoring and control with four-segment LED level meters for each channel and analogue stereo output level VU meters. These features allow engineers to visualise signal levels at every stage, ensuring clarity and accuracy throughout the mixing process. Proprietary API 2520 op-amps and custom output transformers deliver the distinctive warmth and punch that define the API sound, while the external power supply enhances reliability and reduces noise.

Built to Professional Standards

API’s commitment to quality is evident in the ASM164’s robust construction and meticulous engineering. Comprehensive rear-panel connections provide balanced inputs and outputs, accommodating diverse studio setups. The unit is designed to withstand the rigours of professional use, backed by API’s five-year parts and one-year factory service warranty, ensuring long-term reliability and peace of mind.

• 16 analogue summing channels with balanced DB-25 connectors
• Proprietary API 2510 input op-amps and 2520 output op-amps with custom transformers
• Dual stereo program buses (Mix-A and Mix-B), each channel assignable to either or both
• Insert send/return on every channel and global 0dB channel level control bypass
• Continuously variable panning with centre detent and 31-step detented level control
• Four-segment LED level meters for each channel and VU meters for stereo outputs
• Balanced stereo external input and comprehensive rear-panel connections with external power supply

This item, like everything we supply, comes with the complete support of our expert team. Our excellent technicians have been specifying, building and supporting studios for over twenty years. If you have any problems with installation, setup or everyday use, they’re never more than a click away, and always happy to help.

You can contact them here.