Yankee HS-M12 Power Supply

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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 electronicaly advanced power supply with 8 fully isolated sections. It introduces worlds first stepless voltage regulation feature (1V – 24V DC) with the screen showing set voltage value.

Yankee HS-M12 Power Supply features:

▪ 8 high current outputs in eight fully isolated sections

▪ 4 outputs with groundbreaking, stepless voltage regulation feature (1V – 24V DC), adjustable by multi-turn screw. The screen on the top is 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 mobile device or power LED lam to put some light on 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

▪ Powerfull, 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


Dimentions: 50mm x 213mm x 84mm

Power input: switchable 230V/110V


Technical specification:

Section Voltage setup Max current draw
I 9V or 16V AC 1300mA
9V DC 1300mA
12V DC 950mA
II 9V or 12V AC 1300mA
9V DC 1300mA
12V DC 300mA
III – IV 9V DC 500mA
12V DC 330mA
V – VII 9V DC 800mA
12V DC 700mA
15V DC 570mA
18V DC 440mA
20V DC 350mA
22V DC 270mA
24V DC 180mA
VIII 1V – 22V DC 1100mA
23V – 24V DC 750mA
IX 5V DC 1100mA




All DC outputs are 5,5 x 2,1mm barrel connectors, center negative. All AC outputs are 5,5 x 2,5mm barrel connectors.


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


Max power of HS-M12 transformer is 40W. Use only 1000mA fuse.


The set includes:

▪ Yankee HS-M12 Power Supply

▪ U.S. power cord included

▪ Connection cables:

▪ 85 cm / 33,5 in – standard cable (5,5 x 2,1mm) – 2 pieces

▪ 50 cm / 20 in – standard cable (5,5 x 2,1mm) – 3 pieces

▪ 25 cm / 10 in – standard cable (5,5 x 2,1mm) – 2 pieces

▪ 85 cm / 33,5 in – cable (5,5 x 2,5mm)

▪ 50 cm / 20 in – cable (5,5 x 2,5mm)

▪ 10 cm / 4 in – mini-jack adapter

▪ 10 cm / 4 in – reversed polarity adapter

▪ 10 cm / 4 in – 5,5 x 2,5mm with reversed polarity adapter

▪ Splitting cable with 4 outputs

(five outputs on one cable, every 30cm)

▪ USB diode lamp




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