18KHz. Running Temperature level: -10 ～ 55 ℃. Measurements: 296x140x130mm. Network Audio Bridge GEN-3101A01 Power Supply: POE. Communication Procedure: TCP/IP, UDP, SIP. Signal-to-Noise Ratio: > 85dB. Regularity Response: 50Hz https://lorenzozrhev.total-blog.com/the-ultimate-overview-to-setting-up-your-ip-pa-system-successfully-55239408