ACO Pacific's product and service offerings have continued to expand to meet the growing needs of the acoustics marketplace. The "Alternative" family is a broad line of Type 1 and Type 1.5TM measurement microphones. Featuring metal diaphragms, 0 TC insulators and precision construction for accuracy and long-term stability. The growing range of companion products include: ACOtronTM preamplifiers; ACOustical InterfaceTM; power supplies; microphone calibrators; "Extremely Random"TM Noise Generators and the ACOustiCapTM accessories continue to expand