Check the listing for details. Bogen CC4021 2x1 Mixer / Amplifier 40W, 70V. Condition: New. Listed at 197.89 USD. The Bogen Communications CC4021 compact mixer-amplifiers provide 40 watts of output power. Model CC4021 has two inputs: 1 balanced MIC/Line and 1 unbalanced AUX with individual volume controls. Features include priority muting which can be disabled, individual phantom power on all MIC inputs, bass and treble controls, peak and signal indicators, and a REC Output. They are compatible with 70V, 25V, 4-ohm, and 8-ohm speaker systems. The units measure two rack spaces in height, but are only 8-1/4” wide allowing for two units to be placed side-by-side without requiring additional rack spaces. An optional rack mount adapter is available for single and side-byside configurations.Bogen Communications CC4021 Features:40 Watts of output power2 Inputs on Model CC4021:1 balanced MIC/Line;1 unbalanced AUXIndividual phantom power for MIC inputsVolume controls for each inputInput 1 can mute other inputsAudio-activated mutingDefeatable mutingBass and treble controlsCompatible with 70V, 25V, 4-ohm, and 8-ohm systemsREC OutputPeak indicatorSignal indicatorExternal 24V DC supply inputListed to UL Standard 60065 for US and CanadaOptional rack mount adapter available for single and side-by-side configurations (sold separately)Bogen Communications CC4021 Specifications:Output Power: 40W; 1 kHz @ rated distortionFrequency Response:Balanced LINE/MIC: 100 Hz to 20 kHz; 0/-3 dBUnbalanced Input: 80 Hz to 20 kHz; 0/-3 dBDistortion:Balanced LINE/MIC:Unbalanced Input:Output Regulation: 2 dBr or better no-load to full-loadOutput Impedance: 70V, 25V, 4 ohms, 8 ohmsREC Output: 1.14V @ Full Rated Power (FRP)Maximum Sensitivity:Balanced MIC: 1.5 mVrms (200 ohms)Balanced LINE: 150 mVrms (200 ohms)Unbalanced RCA Input: 100 mVrms (10k ohms)Maximum Input Level:Balanced MIC: 100 mVrmsBalanced LINE: 6 VrmsUnbalanced Input: 5 VrmsSignal to Noise AUX:Fundamental: -74 dBr minimum referenced to FRPBalanced MIC: -59 dBr minimum referenced to FRPBalanced LINE: -70 dBr minimum referenced to FRPUnbalanced Input: -70 dBr minimum referenced to FRPBass & Treble:Bass: +/- 10 dBr @ 100 Hz referenced to mid-bandTreble: +/- 10 dBr @ 10 kHz referenced to mid-bandVOX Trigger & Muting:Input 1 Trigger Level: 25mV (approx.)VOX Release Delay: 4 (+/- 1) sec.Muting Level: >-60 dBrPhantom Power: 12V DC min., 18V DC max.Max. Ambient Temp.: 100 deg. F (non-condensing)Thermal Emissions: 141.5 BTU/hr. (full power)External Supply: 24V DC; 3ADimensions (WxHxD): 8-1/4” x 3-1/2” x 10-3/8”Product Weight: 10 lb.Listings: Listed to UL Standard 60065 for US and Canada