WAV Recorder [WAV]

The WAV Recorder from 4ms Company is a high fidelity, two-channel stereo audio recorder with basic playback features. Accepting a wide range of input signals, from line-level to modular-level, the WAV Recorder stores audio onto a microSD card in lossless .wav format up to 96kHz/24-bit. The trigger jack can be used for capturing rhythmic loops or synchronizing multiple WAV Recorder modules for multi-track recording. In Playback mode, the trigger jack or button plays the most recent recording. A simple file/folder navigation system can be used to browse the folders on the card for playing back .wav files. A Gain knob allows for up to +20dB of boost, and an LED Signal Meter indicates clipping and the signal level.

You can connect your WAV Recorder to the Listen Modules using the Audio jumper cable.


The WAV Recorder features:

  • Records high-fidelity, low-noise, stereo WAV files onto microSD Card.
  • Up to 96kHz, 24-bit stereo recording.
  • Extremely low noise, high-fidelity design
  • Configurable to 96kHz, 48kHz, or 44.1kHz; and 24-bit or 16-bit; and stereo or mono
  • Accepts modular signal level, line level, or headphone level.
  • Gain knob and LED level meter allows you easily boost or cut any signal, from synths to smart phones, without clipping.
  • Audio can be monitored without recording, so the WAV Recorder can also be used as a pre-amp for boosting line-level signals to modular level.
  • Playback previous recordings or standard .wav files on the microSD Card, without renaming files.
  • Playback and Record activated by button press or a trigger jack
  • Recording time and number of files are limited only by available space on card: Typical cards can hold hundreds of hours of samples.
  • Continuous Recording feature automatically breaks long recordings (>6 hours, typically) into multiple 4GB files. With a large SD Card (128GB), you can literally record continuously for 2 weeks without stopping!
  • Connects to the LISTEN modules for recording directly from the main output.
  • 24-bit 96kHz Codec (DAC and ADC)
Electrical and Mechanical Specifications:
  • Module Size:
    • 6 HP Eurorack format module
    • 10-pin Eurorack power header
    • 0.98" (25mm) maximum depth with power cable
  • Power consumption:
    • +12V rail: 112mA
    • -12V rail: 12mA
    • +5V rail: not used
    • Connect red stripe of power cable towards the bottom of the module, which is marked with a white stripe and the words -12V and POWER
  • Audio Inputs
    • 22Vpp maximum
  • Audio Signal
    • Signal-to-Noise Ratio (SNR) of WAV file:
      (Measurements taken from recordings made in typical Eurorack case powered by Row Power 40)
      • -91.7dB @ 16-bit, 44.1kHz
      • -88.9dB @ 24-bit, 96kHz
    • Playback Frequency Response (File : Output jacks)
      20Hz - 20kHz: +/-0.1dB maximum
  • Trigger input:
    • Acceptable trigger voltage range: +2V to +12V
    • Minimum pulse width: 5ms
    • Maximum frequency of repeated triggers: 50Hz
      (Minimum time between recordings varies with speed of microSD card)
Included with the WAV Recorder:
  • 16GB micro SD card (class 10)
  • SD adaptor
  • 10-to-16 pin power cable
  • 2 M3 Knurlie screws