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The Yankee HS-M12 is a professional guitar effects power supply with the ability to power almost every guitar effect available on the market.  It is an electronically advanced power supply with 8 fully isolated sections and the world's first stepless voltage regulation feature (1V – 24V DC) with a screen displaying the set voltage value.



  • 8 high current outputs in 8 fully isolated sections.
  • 4 outputs with unique, groundbreaking stepless voltage regulation (1V – 24V DC), adjustable by a multi-turn screw.  Display screen showing voltage value set on each output.
  • 2 AC outputs (9V, 12V or 16V) with 1300 mA or 2000 mA max current that can also be used as 9V or 12V DC.
  • USB output that can charge a mobile device or power LED lamp to light your pedalboard.
  • All outputs fully isolated and compatible with pedals running on 9V DC
  • Movable power socket (see pictures)
  • Assembled in durable aluminium housing, using highest quality material providing safety and durability
  • Powerful, highest quality Toroidal transformer that will not cause any unwanted noise, even when put directly next to effects
  • Efficient voltage filters and stabilizers for perfect sound during whole performance
  • Overheat and short circuit protection will always keep your effects safe
  • Fits under Pedal Train and can be easily attached to any pedalboard with screws



▪ Yankee HS-M12 Power Supply

▪ Power cord

▪ Connection cables:

▪ 90 cm / 35.4 in – standard cable (5.5 mm x 2.1 mm) – 2 pieces

▪ 55 cm / 21.6 in – standard cable (5.5 mm x 2.1mm) – 3 pieces

▪ 30 cm / 11.8 in – standard cable (5.5 x 2.1 mm) – 2 pieces

▪ 90 cm / 35.4 in – cable (5.5 mm x 2.5 mm)

▪ 55 cm / 21.6 in – cable (5.5 mm x 2.5 mm)

▪ 10 cm / 4 in – mini-jack adapter

▪ 10 cm / 4 in – reversed polarity adapter

▪ 10 cm / 4 in – 5.5 mm x 2.5 mm with reversed polarity adapter

▪ Splitting cable with 4 outputs (five outputs on one cable, every 30 cm)

▪ USB diode lamp

Yankee HS-M12 Power Supply

VAT Included
Out of Stock
  • Dimensions:  50 mm x 213 mm x 84 mm

    Power input:  240V but model available switchable 230V / 110V for special order - just email us!

    Output scheme:

    Section Voltage Setup

    Max Current


    I 9V or 16V AC 1300mA
    I 9V DC  1300mA
    I 12V DC 950mA
    II 9V or 16V AC 1300mA
    II 9V DC  1300mA
    II 12V DC 300mA
    III - IV 9V DC  500mA
    III - IV 12V DC 330mA
    V - VII 9V DC


    V - VII 12V DC   700mA
    V - VII 15V DC 570mA
    V - VII 18V DC 440mA
    V - VII 20V DC 350mA
    V - VII 22V DC 270mA
    V - VII 24V DC 180mA
    VIII 1V – 22V DC 1100mA
    VIII 23V – 24V DC  750mA
    IX 5V DC 1100mA


  • The Yankee HS-M12 power supply is fitted with all DC outputs at 5.5 mm x 2.1 mm barrel connectors, center negative.  All AC outputs are 5.5 mm x 2.5 mm barrel connectors.

    In each section, only one output with one voltage setup can be used at a time.

    The maximum power of the HS-M12 transformer is 40W.  For use only with a 1000mA fuse.

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