AmplifierOutput: 70V/100V/4?, 20W RMS, Class D designFrequency Response: 50 Hz – 23 KHzSignal-to-Noise Ratio: 90 dBTHD: < 0.1%Input Impedance: 10 KΩBluetooth SpecificationVersion: CSR 4.0Maximum Transmission Power: Class 2, 4 dBmTransmission Frequency: 2.4 GHz – 2.480 GHzTransmission Range: Up to 100 feet / 30.5 metersReceiver Sensitivity: -80 dBm @ 0.1% BERSupported Profiles: AVCTP 1.0, AVRCP 1.0, GAVDP 1.2, AVDTP 1.0, A2DP 1.2, Hands-Free Profile (HFP) 1.5, Headset Profile (HSP) 1.1Supported Codec: SBC, MP3, AAC, aptXInputs1 x 3-pin Euroblock input (R, G, L), up to 16 AWGOutputs1 x 4-pin Euroblock output (Common, 4 Ω, 70 V, 100 V), up to 16 AWG1 x power adapter inputGeneralPower: 15V DC, 2.5 A, center-positive (power adapter included)Dimensions (W x D x H): 6.4” x 6.0” x 1.9” (163 mm x 153 mm x 48 mm)Weight: 3.1 lbs. (1.4 kg)