ACO Pacific
ACO Pacific is a 45-year-old US manufacturer of IEC61094-4 compliant precision measurement microphones, preamplifiers, power supplies, and acoustic monitoring systems serving OEMs and end-users in automotive, aerospace, government, audio, and research markets globally.
- Company typePrivate
- Founded1978
- HeadquartersBelmont, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What ACO Pacific does
ACO Pacific, Inc. is a privately held specialty manufacturer of precision acoustic measurement equipment, founded in 1978 and headquartered in Belmont, California, with additional manufacturing facilities and subcontractors located in California and internationally. The company designs and builds IEC61094-4 compliant measurement microphones in 1-inch, 1/2-inch, and 1/4-inch formats using stainless steel, nickel, and titanium diaphragms, complemented by a family of ACOtron preamplifiers (standard, phantom-powered, IEPE/CCLD, and right-angle variants) and the ACOustical Interface PS9200 power supply system. The product line is rounded out by NetSLARM sound level alarm and monitoring systems with proprietary DynLeq technology, the patented ACOustiCap EMI acoustical isolator developed with NRC Canada, Simple Intensity sound intensity probes, IEC60942:2003 Class 1 SPL calibrators, and supporting accessories such as windscreens, attenuators, dummy microphones, and IEPE adaptors.
The company serves two primary customer types. End-user customers span automotive noise testing, loudspeaker manufacturing, aerospace, regulatory agencies, universities, and entertainment venues (including installations at Red Rocks Amphitheater and the ATT Performing Arts Center), where the value proposition centers on IEC-compliant precision at price points below premium brands such as Bruel & Kjaer. OEM customers include Agilent Technology (formerly Hewlett Packard), Audio Precision, Crown Audio, DRA Labs, and other instrumentation manufacturers that integrate ACO Pacific microphones and preamps into their own instruments. The company sells direct via a website quote form and sales team in the United States, and through a network of overseas agents in Korea, Hong Kong/China, Israel, Brazil, Chile, and Canada. Pricing is quote-based and not publicly disclosed; products are sold as individual SKUs or as bundled measurement systems (PS9200KIT, 7052SYS, MK224SYS, 7052PH, MK224PH).
ACO Pacific operates as a small, self-funded specialty manufacturer with no disclosed outside funding rounds, parent company, or executive leadership team. The business has remained continuously operational for 45+ years, suggesting durable demand in its niche but with limited visibility into headcount, revenue, or growth trajectory. Distribution and product breadth have been extended incrementally through international agency agreements and product line extensions rather than major acquisitions or capital events.
ACO Pacific firmographics
Firmographics- Name
- ACO Pacific
- Legal name
- ACO Pacific, Inc.
- Website
- https://acopacific.com
- Company type
- Private
- Founded year
- 1978
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- ACO Pacific is a 45-year-old US manufacturer of IEC61094-4 compliant precision measurement microphones, preamplifiers, power supplies, and acoustic monitoring systems serving OEMs and end-users in automotive, aerospace, government, audio, and research markets globally.
- Ownership category
- akta.pro rank
ACO Pacific industry classification
Industry- Product category
- Acoustic Measurement Equipment
- NAICS
- Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Audio and Video Equipment Manufacturing (334310)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)
- akta.pro primary industry
- Microphones & Acoustic MEMS (MEMS Mics/Ultrasonic Transducers) (HDAHALAH)
- akta.pro secondary industry
- Pro Audio Equipment (Mics, Interfaces, Mixers, Studio Monitors) (MPAIAJAB)
Keywords
Where ACO Pacific is headquartered
LocationHeadquarters
- HQ city
- Belmont
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
ACO Pacific business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Hardware Sales - Measurement Microphones: Sale of precision measurement microphones including 1-inch, 1/2-inch, and 1/4-inch variants. Products include the Alternative Family with IEC61094-4 compliant Type 1 microphones featuring various frequency responses, sensitivities, and dynamic ranges.
- Preamplifiers and Electronics: Sale of ACOtron preamplifier family including 4012, 4016, 4022, 4048, 4212 models and variants. Includes IEPE/CCLD compatible preamps and specialty right-angle mount versions.
- SPL Calibrators: Sale of sound level calibrators including models 521, 511E, and 511ES124 for calibrating measurement microphones at 94 dBSPL and 124 dBSPL.
- Accessories: Sale of windscreens (WS1, WS7, outdoor -80T series), dummy microphones, microphone attenuators, preamp cables, and adaptor accessories.
- Complete Measurement Systems: Sale of bundled measurement microphone systems including PS9200KIT, 7052SYS, MK224SYS, and Simple Intensity systems combining microphones, preamps, power supplies, and accessories.
- SLARM Monitoring Systems: Sale of NetSLARM sound level alarm and monitoring systems with wired/wireless capabilities for hearing conservation and environmental noise monitoring.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Direct sales via quote request |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels4 records
ACO Pacific product offering
Product offeringCore offering
ACO Pacific, Inc. is an internationally known manufacturer and supplier of precision measurement microphones and microphone systems, including IEC61094-4 compliant 1-inch, 1/2-inch, and 1/4-inch capsules (stainless steel, nickel, and titanium diaphragm variants), ACOtron preamplifiers, ACOustical Interface PS9200 power supplies, NetSLARM sound level alarm/monitoring systems, ACOustiCap EMI acoustical isolators, SPL calibrators, windscreens, and sound intensity probes. The company sells these hardware products and bundled measurement systems directly to end-users, OEMs, government agencies, universities, and international distributors from its headquarters in Belmont, California.
Product overview
ACO Pacific is a manufacturer and supplier of precision measurement microphones and acoustic measurement systems. The core product line centers on the 'Alternative' family of IEC61094-4 compliant measurement microphones (1, 1/2, and 1/4 inch diameters) with companion ACOtron preamplifiers (standard 4012, IEPE 4212, phantom 4048, and right angle variants), which are powered by the ACOustical Interface PS9200 power supply system. The company offers complete measurement microphone systems including the PS9200KIT (complete field kit), 7052SYS and MK224SYS (IEPE powered), and 7052PH/MK224PH (phantom powered). Additional product lines include the NetSLARM/ACOustAlarm sound level alarm monitoring system for hearing conservation and environmental noise monitoring, the ACOustiCap EMI isolator for electromagnetic interference testing, Simple Intensity sound intensity probe systems, SPL calibrators (521, 511E, 511ES124), and the 3025 Extremely Random noise generator. The product ecosystem is supported by comprehensive accessories including windscreens, microphone attenuators, dummy microphones, preamp cables/adapters, and IEPE adaptors. ACO Pacific serves both end-users and OEM customers in automotive, aerospace, consumer electronics, regulatory compliance, and industrial applications.
Differentiator
Problem solved
Functional benefit
Brands
- ACOtron: Line of microphone preamplifiers including models 4012, 4016, 4022, 4048, 4212, and right angle versions (RAS/RA)
- ACOustical Interface
- ACOusticCap
- NetSLARM
- ACOustAlarm
- Extremely Random
- Simple Intensity
Products and services
- Alternative Measurement Microphones (1, 1/2, 1/4 inch)
Quantifiable outcome
- Frequency response to 120 kHz (-2 dB) on model 7016
- +4 more outcomes
Companies that use ACO Pacific
Customer profileNamed customers9 records
Segments3 records
Ideal customer profiles3 records
ACO Pacific technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
ACO Pacific partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core and minor.
- NRC CanadacoreJoint development partnership for ACOustiCap patented multilayer acoustical isolator design. NRC Canada contributed to the EMI testing solution.
- ABC Trading (Korea)minorOverseas agent for Korea market. Contact: K.S. Lee. Located at 3F, 11, Seolleung-ro 103-gil, Gangnam-gu, Seoul, 135-917, Korea. Tel: +82-2-2226-3161.
- Guangzhou Jingyin Electronic Technology Co. Ltd. (Hong Kong/China)minorOverseas agent for Hong Kong and China markets. Contact: Li Xiaochang. Located at Rm24C Chung Kiu Building No. 76 Xianlie zhong Road, Guangzhou PRC.
- AB-AD Technology & Engineering, Ltd. (Israel)minorOverseas agent for Israel. Contacts: Arie Abraham and Jacob Radwantzor. Located at 20 Hattas st, Kefar-Saba 44425, Israel.
- Master Acustica, Division of Polus (Brazil)minorOverseas agent for Brazil. Located at R. Gomes de Carvalho, 621 cj 707, Vila Olímpia, São Paulo-SP, CEP 04547-002.
- ENERTEST (Chile)minorDistributor for Chile. Located at Concha y Toro No 65, Santiago, Centro, Chile.
- A-Tech Instruments (Canada)minorExclusive agent for Canada. Head office in Toronto at 50 Nashdene Rd., Unit 107, Scarborough, Ontario. Sales office in Montreal at 6600 TransCanada Hwy, Point Claire, Quebec.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
ACO Pacific competitors and assessment
Company assessmentDirect peers
- Rion Co., Ltd. Direct peer in sound level meters and IEC-compliant measurement microphones, particularly strong in Asia-Pacific markets where ACO Pacific also competes via its Korean and Chinese distribution partners.
- Brüel & Kjær (HBK): Direct competitor in IEC 61094-compliant measurement microphones, preamplifiers, and acoustic test systems. HBK acquired Brüel & Kjær in 2023 and serves as the global premium standard in acoustic measurement, which ACO Pacific explicitly positions against on cost.
- NTi Audio: Direct peer in acoustic measurement instrumentation including sound level meters and Class 1 measurement microphones for environmental, occupational, and entertainment venue applications.
- PCB Piezotronics (MTS Systems): Direct competitor in measurement microphones and IEPE-compatible preamplifiers for acoustic and vibration testing. PCB's ICP® (IEPE) product line parallels ACO Pacific's ACOtron 4212 IEPE preamplifier family.
- Norsonic (SINUS Messtechnik): Direct peer in sound level meters, measurement microphones, and acoustic instrumentation. ACO Pacific's PS9200 power supply explicitly supports Norsonic-compatible Lemo 7-pin connectors, indicating direct interoperability and competition.
- Microtech Gefell: Direct peer in IEC 61094-4 compliant measurement microphones and condenser microphone systems. Microtech Gefell targets similar OEM and laboratory acoustic measurement customers with comparable Type 1 precision products.
- G.R.A.S. Sound & Vibration: Direct peer in precision measurement microphones and preamplifiers with IEC 61094-4 compliant products. G.R.A.S. competes head-to-head with ACO Pacific in OEM and end-user test & measurement channels globally.
- Cirrus Research: Direct peer in sound level meters, noise dosimeters, and occupational health/environmental noise monitoring — adjacent to ACO Pacific's SLARM hearing conservation offerings.
Broad incumbents
- ACOEM (01dB, Metravi): Broad incumbent in environmental noise monitoring, vibration monitoring, and occupational health with measurement microphone and sound level meter product lines that overlap with ACO Pacific's SLARM and measurement offerings.
- Keysight Technologies (formerly Agilent/HP): Listed as an ACO Pacific OEM customer (formerly Agilent/HP). Keysight is a broad incumbent in electronic test & measurement that integrates ACO Pacific components into broader acoustic test platforms.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
ACO Pacific social profiles
Digital presenceACO Pacific financial estimates
Financial estimateRevenue estimate
Valuation estimate
ACO Pacific leadership team
Management profileNumber of profiles
ACO Pacific funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ACO Pacific M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about ACO Pacific
What does ACO Pacific do?
ACO Pacific, Inc. is an internationally known manufacturer and supplier of precision measurement microphones and microphone systems, including IEC61094-4 compliant 1-inch, 1/2-inch, and 1/4-inch capsules (stainless steel, nickel, and titanium diaphragm variants), ACOtron preamplifiers, ACOustical Interface PS9200 power supplies, NetSLARM sound level alarm/monitoring systems, ACOustiCap EMI acoustical isolators, SPL calibrators, windscreens, and sound intensity probes. The company sells these hardware products and bundled measurement systems directly to end-users, OEMs, government agencies, universities, and international distributors from its headquarters in Belmont, California.
Is ACO Pacific a public or private company?
ACO Pacific is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was ACO Pacific founded?
ACO Pacific was founded in 1978. It employs 51 to 100 people.
Where is ACO Pacific based?
ACO Pacific is headquartered in Belmont, United States, in the North America region.
How does ACO Pacific make money?
Six revenue lines are on record. Hardware Sales - Measurement Microphones are the primary driver. The others are preamplifiers and Electronics, SPL Calibrators, accessories, complete Measurement Systems and SLARM Monitoring Systems.
Who are ACO Pacific's main competitors?
Direct peers on record are Rion Co., Ltd., Brüel & Kjær (HBK), NTi Audio, PCB Piezotronics (MTS Systems), Norsonic (SINUS Messtechnik), Microtech Gefell, G.R.A.S. Sound & Vibration and Cirrus Research. Broad incumbents are ACOEM (01dB, Metravi) and Keysight Technologies (formerly Agilent/HP).
Does ACO Pacific have an API?
No public API is recorded for ACO Pacific.
What industry is ACO Pacific in?
ACO Pacific's product category is Acoustic Measurement Equipment. Its primary akta.pro industry code is HDAHALAH, Microphones & Acoustic MEMS (MEMS Mics/Ultrasonic Transducers), with a secondary code of MPAIAJAB, Pro Audio Equipment (Mics, Interfaces, Mixers, Studio Monitors). Its NAICS code is 33451 and its SIC code is 3823.