The Doepfer A-156 QNT Eurorack Quantizer Module is a Dual Control Voltage Quantizer. Quantizers convert a continuous control voltage (within the range of 0-10V) into a stepped output voltage (in the same voltage range), meaning the quantization is controllable within that range. Ordinarily 1/12V steps are used to produce steps in semitones.

Quantizer 2 on the A-156 has some more sophisticated quantizing modes available. Switches select between Major and Minor scales, Major and Minor chords, fundamental + 5th & the addition of 6th or 7th intervals when chords are selected. The only voltages appearing at the CV output are those that comply with the selection sequence.

Quantizer 1 is always set to work in the semitone mode.

The main features of the Doepfer A-156 QNT Eurorack Quantizer Module include:

• Dual Quantizer
• Transpose CV in 1+2
• Switch Selectable Sequencing
• Width: 403mm
• Depth: 55mm
• Manufacturer: Doepfer
• (Picture is of original A-156)