PCB Grinder CTQ EQ

Projects > PCB Grinder CTQ EQ

PCB Grinder’s Classic Tube EQ (CTQ) is based on Jakob Erland’s take on the classic Pultec EQP1A- simplified with a one-tube makeup gain stage, but maintaining the original controls and inductor-capacitor based filtering. This kit includes all components except power toroid and enclosure.

CTQ Features:

  • High cut/boost/Q, low cut/boost
  • Single-ended tube makeup gain section
  • Lundahl 5402 input and output transformers


  • 240 for component kit
  • €55 for enclosure
  • €45 for power toroid (EU only)

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