PAMT – Precision Add / Manual Transpose

The PAMT is a small performance oriented module. It’s buttons can add or subtract exactly 1Volt from it’s incoming voltages. This can be used to transpose CV up and down by an octave. It has two signal inputs which are summed together, like this you can chain PAMT modules to extend the range of the transpose function.

It is made from high precision parts, such as:

  • 0.1% tolerance resistors
  • Low Noise/Offset/Drift Opamps
  • Low noise voltage reference
  • long life SP86 pushbuttons (the king of buttons 🙂 )


Tunable Parameters:

  • BUTTON 1 & 2: can add or subtract 1V from the input CV signals to transpose them by an octave


  • IN1 is the input jack for channel one
  • IN2 is the input jack for channel two
  • OUT is the summed output of IN, IN2 and the OFFSET voltage


  • +12V 4mA / -12V 1mA


  • Width: 4 HP (20mm)
  • Depth: 13mm

Download the documentation with module and circuit description, pick&place data, schematic and BOM:
Documentation MKI
Documentation MKII