20KHz. Running Temperature: -10 ～ 55 ℃. Dimensions: 126x66x27mm. Network Digital Amplifier XC-9508P Power Supply: AC100V ～ 240V, 50/60Hz. Power: 130W, 260W, 360W, 500W. Interaction Protocol: TCP/IP, UDP, SIP. Signal-to-Noise Ratio: > 80dB. Regularity Response: 60Hz https://travistzzur.blogproducer.com/36476575/selecting-the-right-ip-speaker-secret-features-to-consider