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API Manuals & User Guides

Manufacturer of high-end professional audio equipment including consoles and preamps, as well as outdoor heated products under the Allied Precision name.

Tip: include the full model number printed on your API label for the best match.

About API manuals on Manuals.plus

API (Automated Processes Inc.) is a legendary manufacturer of professional audio equipment, renowned for its discrete analog circuitry and the "API Sound" that has shaped the music industry since 1969. Based in Jessup, Maryland, they produce world-class recording consoles, 500-series modules, and signal processors.

Please Note: This category also contains manuals for Allied Precision Industries (also branded API), a manufacturer of heated bird baths, pond de-icers, and agricultural products now associated with Miller Manufacturing. Please check your specific model number to identify the correct manufacturer.

API manuals

Latest manuals from manuals+ curated for this brand.

API 600 Outdoors Bird Bath Heated User Manual

December 5, 2025
API 600 Outdoors Bird Bath Heated INTRODUCTION An essential outdoor tool for keeping water available to birds in the winter is the API 600 Outdoors Bird Bath Heated. This heated…

API 300 Birdbath Water Heater User Manual

December 5, 2025
API 300 Birdbath Water Heater INTRODUCTION For bird lovers who want to provide wild birds access to water throughout the year, even during the coldest months, the API 300 Birdbath…

api 3122V 2 Channel Mic Preamp User Guide

August 6, 2025
api 3122V 2-Channel Mic Preamp Specification Specification Details Input Impedance Mic: 1500 OhmsHi-Z: 470 kOhms (unbalanced) Output Impedance Less than 75 Ohms, transformer balanced Nominal Levels XLR channel output: +4…

API 600 Heated Birdbath User Manual

November 22, 2024
API 600 Heated Birdbath Launch Date: 18, 2021 Price: $107.48 Introduction The API 600 Heated Birdbath is a safe and energy-efficient way to keep water from freezing, making it a…

api 5500 Dual Equalizer Instruction Manual

June 1, 2024
api 5500 Dual Equalizer Product Information Specifications: Product Name: API 5500 Dual Equalizer Manufacturer: Automated Processes, Inc. Model: 5500 Address: 8301 Patuxent Range Road, Jessup, MD 20794 USA Contact: 301-776-7879…

API Aquarium Water Test Kit Instructions and Guide

Instruction Manual
Comprehensive guide to using API aquarium water test kits for pH, ammonia, nitrite, and nitrate, including recommended levels, testing procedures, and safety information for maintaining healthy aquarium water quality.

API 2500+ Stereo Bus Compressor Operator's Manual

operator's manual
Discover the features and operation of the API 2500+ Stereo Bus Compressor. This manual provides detailed information on its controls, functions, and applications for professional audio engineering.

API manuals from online retailers

API GH & KH Test Kit: Freshwater Aquarium Water Testing Manual

GENERAL/CARBONATE HARDNESS KIT (Model 58) • October 20, 2025
Comprehensive instruction manual for the API GH & KH Test Kit, designed for accurate measurement of general and carbonate hardness in freshwater aquariums to maintain optimal water quality…

API support FAQ

Common questions about manuals, registration, and support for this brand.

  • Who manufactures API audio gear?

    API audio equipment is manufactured by Automated Processes Inc., based in Jessup, Maryland.

  • Who makes API heated bird baths?

    API heated bird baths and de-icers are products of Allied Precision Industries, a brand associated with Miller Manufacturing.

  • Where can I find warranty information for API Audio?

    Warranty registration and policies for API Audio products can be found on their official service website at service.apiaudio.com.

  • How do I contact API Audio support?

    You can contact API Audio support via email at service@apiaudio.com or by phone at 301-776-7879.