The Langevin HP-112 12-Channel Headphone Mixer has many of the same features as the HP-101 8-channel model except there are 4 more mono inputs. Yes, the HP-101 8-channel units and the HP-112 12-channel units can be mixed in the same installation as far as the ELCO cabling is concerned however, the 8-channel headphone mixers won't receive signal channels 9-12 from the 12 channel units. (Duh.) All the rest of the functions (talkback, logic, Interrupt, Mic etc.) are 100% compatible between both models. See HP-112 ELCO pinout here.

The Langevin Headphone Mixer's Mute controls the Power Amps directly and steps through ON, MUTE, LEFT MUTE and RIGHT MUTE then back to ON. Each station also has bass and treble EQ controls carefully optimized for headphones. The master stereo volume control feeds the built-in power amps which produce peak voltage (equivalent to) well over a hundred watts per channel to drive up to 4 headsets at any volume the musician may choose. No weeny little beetles like you'd find in your Walkman here!

The two features that impress the musicians the most are the easy communication with one button and the fabulous sonic quality even at extreme levels. Ever clever, the ELCO connectors also provide pins used for several other communication and monitoring functions, including TALK and INTERRUPT. There are also hidden features on the ELCO's such as the ability for the control room to monitor each station's headphone mix or to hear the unswitched "always-on" individual station microphone.

Langevin Langevin HP-112 12-Channel Headphone Mixer Features:

• Inputs:
• All inputs on ELCO/EDAC 56-pin connectors 40Kohm input Z
• Channels 1 – 4: Balanced line-level mono with 60 mm fader and pan pot
• Channels 5 – 6: Balanced line-level stereo with 60 mm fader
• switchable Mono, Stereo or Stereo Image Manipulation (SIM)
• CMRR greater than 70dB with source Z< 150 ohm
  
  Headphone outputs:
• Four 1/4" stereo headphone jacks connected in parallel
• Peak to peak voltage: typically 50 volts into 100 ohms
• Power output: 3 watts RMS into any load from 4 to 100 ohms
• Output impedance less than 0.1 ohm
• Built-in protection against overvoltage, undervoltage, overloads, shorts
• to the supplies or outputs, thermal runaway, and most other catastrophes.
• No power-down / power-up thumps, pops, or DC
• Multi-mode MUTE button ("panic button")
• THD + Noise: < .03% (-70dB)
• Tone controls > ±12 dB @ 100 ohms & 10 Kohms (gentle slope)
  
  Communication:
• Multimode TALKBACK. "TALK" over music, "INTerrupt" kills music
• DC control voltage enables individual stations to receive TalkBack signal
• Built in MIC and TALK button, 2 LEDs show TalkBack mode
• MIC and SWITCHED MIC signal available via ELCO input
  
  Power supply:
• Dedicated external PSU per station.
• Power consumption (120/240VAC): 13 watts
• Factory set for 100V, 120V or 220-240VAC operation for original destination country's mains voltage.
• Operating Mains Voltage changeable with power transformer re-wiring via switch and fuse value change.
• Mains Voltage Frequency: 50 ˜ 60Hz
  
  General info:
• Dimensions: 11-1/4" (W) x 7-3/4" (D)x 2-1/2" (D)
• Shipping Weight: 9 lbs.

Save BIG when you buy today!