264043 - Electric audio frequency amplifiers audio amplifiers in assemblies - 31 Manufacturer List

2640435500 - Telephone or measuring amplifiers (amplifiers) (except high or medium frequency amplifiers - 1 Manufacturer
2640435900 - Electrical audio frequency amplifiers (amplifiers) (including hi-fi amplifiers) (excluding - 23 Manufacturer
2640437000 - Electric sound amplifier sets (except for systems with microphones and speakers used in ai - 6 Manufacturer