Overview
The ART MX821S is a versatile rack mount mixer combining eight independent input channels into a stereo line-level output. Each input channel accepts a balanced XLR microphone input or unbalanced 1/4-inch TS line-level signal and provides independent level and pan controls.
+48 Volt phantom power may be independently selected on each microphone input. A master level control adjusts the signal output to the low-impedance balanced 1/4-inch TRS jacks.
Prefade output (not affected by the master level control) and Aux Bus input RCA jacks allow patching of multiple units when more channels are needed
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 The ART MX821S may be used on stage, in the studio, or for permanent install applications including conference rooms, corporate boardrooms, churches, restaurants, small clubs, health clubs and more. A built-in power supply and single high 19-inch rack mount format allows for easy installation and reliable long-term operation.
Key Features
- Eight input channels with individual level and pan controls
 - Pan controls place each input mono signal anywhere in the output stereo image
 - Balanced microphone XLR or unbalanced 1/4-inch TS inputs on each channel
 - Full +48V low noise phantom power switchable for each microphone input
 - Balanced left and right 1/4-inch TRS main output jacks with master level control
 - Prefade Output jacks and Aux Bus Input jacks allow units to be chained to provide extra inputs
 - Each line input jack may be individually converted to a direct line output by means of internal jumpers
 - Rugged 1U rack-mount steel chassis with built-in power supply
 
Specifications
| 
			 Input Connections  | 
			
			 XLR female balanced (Mic, channels 1-8) 1/4-inch TS unbalanced (Line, channels 1-8) RCA unbalanced (Aux Bus In, Left and Right)  | 
		
| 
			 Output Connections  | 
			
			 1/4-inch TRS balanced (Main Outputs, Left and Right) RCA unbalanced (Prefade Out, Left and Right)  | 
		
| 
			 Input Impedance  | 
			
			 2k Ω (Mic), 20k Ω (Line), 51k Ω (Aux Bus In)  | 
		
| 
			 Output Impedance  | 
			
			 200 Ω (Main Outputs, balanced), 100 Ω (Prefade Out)  | 
		
| 
			 Frequency Response  | 
			
			 20 Hz – 20 kHz (+0, -1 dB) (CH 1-8 in, M  | 
		
| 
			 Total Harmonic Distortion  | 
			
			 <0.01% @ 1 kHz, typical  | 
		
| 
			 Phase Response  | 
			
			 All connections are phase coherent  | 
		
| 
			 Signal to Noise Ratio  | 
			
			 >99dB typical (Ref 0dBu)  | 
		
| 
			 CMRR  | 
			
			 >43 dB typical  | 
		
| 
			 Maximum Input Level  | 
			
			 -4 dBu (Mic), +22 dBu (Line)  | 
		
| 
			 Maximum Output Level  | 
			
			 +24 dBu (balanced), +18 dBu (unbalanced)  | 
		
| 
			 Maximum Gain  | 
			
			 54 dB (Mic), 29 dB (Line)  | 
		
| 
			 Phantom Power  | 
			
			 Switch Selectable, +48V DC (regulated and filtered), 7 mA current limiting per leg  | 
		
| 
			 Power Requirements  | 
			
			 USA: 95-125 VAC, 50-60 Hz, <15W  | 
		
| 
			 Dimensions  | 
			
			 1.75″ x 19″ x 6″ (4.5cm x 48.3cm x 15.2cm)  | 
		
| 
			 Weight  | 
			
			 6.3 lbs (2.9 kg)  | 
		
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