This preamplifier was specifically designed to enable the use of measurement microphones – including replica IEC 60711 style couplers and those based on Panasonic WM-61A mic couplers – with any standard sound card. Unlike many imported devices that demand proprietary interfaces or non-standard power, this unit removes those limitations entirely. It delivers a clean, low-noise signal, broad compatibility, and stable, reliable performance in all environments – whether you’re working in a professional audio lab, experimenting as a hobbyist or  DIY measurements. 

Key Features:

• 100 % proprietary design – custom-designed PCB and locally manufactured enclosure, built from the ground.

• Stereo input/output – connect measurement microphones without concern for polarity. Simply plug in and power up – the unit works reliably regardless of channel configuration.

• 9 V battery power – eefficient design delivers hundreds of hours of operation from a single standard battery.

• High-quality audio components – the signal path uses premium audio capacitors (Nichicon MUSE series) selected for low distortion and stable performance, ensuring clear, accurate measurement data.

• LED operation indicator – discreet, diffused LED clearly shows power status without distracting light.

• Minimalist, lab-friendly enclosure – semi-transparent case with no external logos or markings. Essential information is printed on the PCB inside. Perfect for environments where you prefer no visible branding or need to integrate the device under your own company identity.
  

• Distinctive PCB checkerboard pattern – eye-catching design motif inspired by Polish aviation tradition, adding character without compromising function.

In case of any questions, please contact me.