Alto Technologies Corporation
Named as the FAA publishes it on its approvals.
Approved to make 2 classes of equipment. FAA spelling: Alto Technologies Corporation.
Equipment approvals technical standard order authorisations
2021-02-03TSO-C139a · AIRCRAFT AUDIO SYSTEMS AND EQUIPMENT · AIRCRAFT AUDIO AMPLIFIER, ASW-516 AIRCRAFT CABIN SUBWOOFER, ASP-612 AIRCRAFT... · cabin, seats and restraints
2016-10-12TSO-C139 · Aircraft Audio Systems and Equipment · Aircraft PA Amplifier (with Custom Equalizer), Aircraft Cabin Digital Audio... · cabin, seats and restraints
Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.