Perhaps the most high powered and reliable headphone amp available.  There are two separate main stereo inputs on ¼" jacks, plus a stereo Auxiliary input feeding stations 1 and 2 (or any combination of all six by simple internal re-wiring).  This Auxiliary signal is added to the main inputs, and can be used for click tracks, talkback from the control room for more effective communication between the engineer/producer and musicians, rehearsing to a tape/CD/minidisc, etc. 

A two-colour led is fitted to each of the three inputs, showing green for signal present, and red when approaching input overload.   The Main Input 2 also has bass and treble boost and cut.  Each of the 6 headphone outputs has its own volume control, an input 1 or 2 selector button, and a mono switch sums the left and right signals.  The rear panel has duplicate input sockets for easy rackmounting.  Very solid all-steel construction, and volume is more than ample with headphones ranging from 8 to 2,000 ohms.

Technical Specs

• A,B & Aux Input Imp:  20Kohms unbalanced stereo    
• A,B & Aux input sensitivity:   0.25 volts nominal
• Max Output:   2v, 500mW into 8 ohms - 4.7v, 35mW into 600 ohms - 4.8v, 10mW into 2,000 ohms   
• High / Low e.q: 10kHz / 100Hz ± 13dB.   
• System Gain: 28dB, e.q. flat.   
• Hum & Noise: -85dB unweighted.    
• T.H.D.:  0.07% @ 1KHz    
• Freq. Response:   10Hz-20kHz ± 3dB   
• Max Consumption:  100mA    
• Dimensions:  44x483x205 mm     
• Weight: 4 Kilos