4ms Listen 4 Eurorack Audio Interface Module
Eurorack mixer and output module
A versatile and reliable mixer module from 4ms. The 4ms Listen 4 Mixer Module features four channels, two of which have a pan pot and two of which have L/R inputs. This utility module features everything you need to mix your modular synth and can even be daisy chained with other Listen 4 Mixers to increase your channel count.
Reliable Mixing
Four channels of stereo mixing, with line, modular, and headphone outputs. The Listen 4 module is an extremely useful utility module. Out of the four channels, two have mono inputs with pan controls and the other two are stereo channels with dual inputs. This provides optimised compatibility with both stereo and mono. If four channels are not enough then you can daisy chain multiple Listen modules.
The Listen 4 features LEDs to indicate clipping, anti-pop, and excessively low noise. If you rely on multiple ins and outs as part of your Eurorack then trust in 4ms to deliver and distribute your signal perfectly, every time.
Features
- Four channel Eurorack mixer
- Headphone output
- Trim pot for clipping light level
- Daisy Chaining
- Anti-pop circuitry
- Specifications
- 10HP Eurorack format module
- 0.98” (25mm) maximum depth (includes power cable)
- 10-pin Eurorack power header
Power consumption
- Maximum values without using headphones jack:
- Main outputs shorted to ground, headphones jack not used, maximum signal levels on all channels
- +12V: 70mA
- -12V: 62mA
- Maximum values in worst-case conditions:
- All outputs including headphone jack shorted to ground, maximum signal levels on all channels
- +12V: 200mA
- -12V: 62mA
Main outputs
- Output type: zero-impedance, compensated for electrolytic capacitor distortion
- Frequency Response: +/-0.2dB max deviation, 10Hz - 20kHz
- Maximum output level: 22.2V peak-to-peak
- Maximum gain of channels 1 and 2: 8.0dB (hard-panned), 3.1dB (center-panned)
- Maximum gain of channels 3 and 4, and INS header: 4.9dB
Headphones jack
- Frequency response: -0.2dB at 20Hz; 0dB at 100Hz to 20kHz (driving 32Ω headphones)
- Maximum voltage (peak-to-peak): 5Vpp
- Module size:
- 10 HP Eurorack format module
- 0.98" (25mm) maximum depth with power cable
- Power consumption:
- Maximum values without using headphones jack: Main outputs shorted to ground, headphones jack not used, maximum signal levels on all channels
- +12V: 70mA
- -12V: 62mA
- Maximum values in worst-case conditions: All outputs including headphone jack shorted to ground, maximum signal levels on all channels
- +12V: 200mA
- -12V: 62mA
- Maximum values without using headphones jack: Main outputs shorted to ground, headphones jack not used, maximum signal levels on all channels
- Main outputs
- Output type: zero-impedance, compensated for electrolytic capacitor distortion
- Frequency Response: +/-0.2dB max deviation, 10Hz - 20kHz
- Maximum output level: 22.2V peak-to-peak
- Maximum gain of channels 1 and 2: 8.0dB (hard-panned), 3.1dB (center-panned)
- Maximum gain of channels 3 and 4, and INS header: 4.9dB
- Channel bleed-through (Main Level attenuation):
- Test conditions: Test signal input into each channel with Level knob at 100%. Frequencies from 20Hz to 20kHz tested. Result given as a ratio of the signal measured on main output jacks with Main Level knob at 0%, to the signal measured with Main Level knob at 100%. Worst-case results for any channel and frequency reported.
- Left output jack: -102dB
- Right output jack: -90dB
- Channel bleed-through (channel attenuation):
- Test conditions: Test signal input into each channel with Level knob at 0% and Main Level knob at 100%. Frequencies from 20Hz to 20kHz tested. Result given as a ratio of the signal measured on main output jacks with channel Level knob at 0%, to the signal measured with channel Level knob at 100%. Worst-case results for any channel and frequency reported.
- Left output jack: channel 4: -90dB at 20kHz; all other channels -110dB
- Right output jack: channel 4: -84dB at 20kHz; all other channels -110dB
- Channel cross-talk:
- Test conditions: Test signal input into each channel. Level knob at 0%, and other channel Level knobs at 100%. Main Level knob at 100%. Frequencies from 20Hz to 20kHz tested. Measured signal subtracted from signal with all Level knobs at 0%, and result given in dB as a ratio to output signal with test channels’ Level knob at 100%. Worst-case results for any channel and frequency reported.
- Left output jack: -110dB
- Right output jack: -102dB
- Headphones jack
- Frequency response: -0.2dB at 20Hz; 0dB at 100Hz to 20kHz (driving 32Ω headphones)
- Maximum voltage (peak-to-peak): 5Vpp