Professional 6-channel headphone amplifier

Introducing Nowsonic Hexacon

The Nowsonic Hexacon is a headphone amplifier with six separate amplifier channels. Each channel derives its signal from the stereo input on the rear panel.

If you need to temporarily feed a different signal to the connected headphones, you can replace the input signal via a direct input on the front. In addition, each headphone channel has its own stereo input for monitoring an alternative signal. Each output channel offers dedicated control over panning of the signal. Alternatively, the mixing ratio between the primary input and the AUX input can be controlled in the channel.

Each output channel features a dual-channel equalizer for optimizing the sound of the output signal as needed. For flexible wiring, the headphone outputs are in parallel as 1/4″ stereo TRS jacks on the rear and the front panel. Each channel can also be individually toggled between the four operating modes Stereo, Mono Left, Mono Right and Mono Left & Right for providing various monitoring options.

On the rear panel you will find balanced XLR and 1/4″ TRS jacks for the main bus. The input signal can be looped through to further Hexacon units via normalized THRU sockets (XLR – and 1/4″ TRS jack) for cascading. The output level is visualized clearly at all times via an eight-step level display for each channel as well as in the MAIN bus.


Features and Applications


  • Six-channel headphone amplifier with equalizer and variable aux input per channel
  • Eight-segment LED indicators for each channel as well as main signal bus
  • Dual function balance control for panning or mixing between AUX and Main
  • Dedicated equalizer per channel
  • Mono summing
  • I/O on front and back
  • 19-inch metal housing


  • Collaboration in the home studio and in the DAW
  • Monitoring for band members in the rehearsal room
  • Installation in conference rooms
  • Hi-Fi system monitoring in the living room


  • Frequency response: 20 Hz to 50 kHz, +0/-2 dB
  • Maximum gain: 25.6 dB at 1 kHz
  • Equalizer:
    • Treble EQ: ± 12 dB @ 10kHz, shelving filter
    • Bass EQ: ± 12 dB @ 100 Hz, shelving filter
  • Inputs:
    • 2x XLR and 1/4″ TRS jacks (main input)
    • Balanced and unbalanced assignment
    • 1/4″ TRS jacks (Aux inputs) per channel
  • Input impedance:
    • 40 kΩ (Main: balanced XLR and 1/4″ TRS jack inputs)
    • 9.9 kΩ (Direct in: 1/4″ jack)
    • 15 to 21 kΩ (AUX input: 1/4″ TRS jacks)
  • Maximum input level: +21.5 dBu
  • Dynamic range: 101 dB typ. @ 130 mW, 600 Ω load, max. level
  • Outputs:
    • 2x XLR and 1/4″ TRS jacks (main thru)
    • 12x 1/4″ stereo TRS jacks (headphone outputs)
  • Output impedance = 12 Ω
  • Maximum output level:
    • To 600 Ω headphones: 150 mW at 1 kHz
    • To 32 Ω headphones: 500 mW at 1 kHz
    • To 8 Ω headphones: 150 mW at 1 kHz
  • Dimensions: 44.5 x 482.6 x 190.5 mm (H x W x D)
  • Weight: 3.1 kg
  • Power supply:
    • Internal power adapter with IEC-60320 C13/C14 port (IEC plug)
    • Switchable between 115 V, 60 Hz and 230 V, 50 Hz
    • Externally accessible fuse for 250V and 0.5A
    • Consumption: 18 W idle, 60 W max.

Scope of delivery

  • Hexacon
  • Power cord
  • User manual


“If you are looking for a Swiss army knife for headphone amplifiers, you should definitely test the Hexacon. Whether in the recording studio, for silent in-ear rehearsals or at trade fairs and presentations: The 19-inch dwarf feels at home wherever many headphones are to be used.”

“The Hexacon scores in all respects – for this price it is remarkably well equipped, flexible in the signal line, well adaptable in the sound, sound at the height as well as haptic and processing technically flawless.”

“The Nowsonic Hexacon is a good sounding headphone amplifier equipped with all kinds of special functions. For simple tasks like recording solo vocals, the Hexacon is almost unchallenged, but can already play out its possibilities well here. However, it only really gets going when it is fully occupied with up to 12 headphones, individual aux path recordings and the use of the equalizer. It is simply a good workhorse, which is especially suitable for those who regularly master larger recording situations with several participants.”