Palmer PWT12IEC Pedalboard Power Supply with USB
Introduction
The power supply unit with 12 isolated and one non-isolated DC outputs also has a USB-A and a USB-C port that can be used to charge smartphones and tablets. The power supply of the unit is not provided by an external power supply unit, but by a standard IEC power cable with an IEC connector.
Safety Instructions
- Please read these instructions carefully.
- Keep all information and instructions in a safe place.
- Follow the instructions.
- Use the device in the prescribed manner only.
- Do not open the device and do not perform any modifications.
Packaging
- Packaging can be fed into the reusable material cycle using the usual disposal methods.
- Please separate the packaging in accordance with Palmer PWT12IEC Pedalboard Power Supply with USB with disposal laws and recycling regulations in your country.
Device
- This device is subject to the European Waste Electrical and Electronic Equipment Directive in the currently valid version. WEEE Waste Electrical and Electronic Equipment Directive. Old appliances do not belong in household waste. The old device must be disposed of via an approved disposal company or a municipal disposal facility. Please observe the applicable regulations in your country!
- Observe all disposal laws applicable in your country.
- As a private customer, you can obtain information on environmentally friendly disposal options from the seller of the product or the appropriate regional authorities.
Batteries
- Observe all disposal laws applicable in your country.
- As a private customer, you can obtain information on environmentally friendly disposal options from the seller of the product or through the relevant regional authorities.
Intend Use
This product is a power supply unit for effect units. Any other use and the use of the product outside the specified technical data and operating conditions are considered improper use!
The product is not suitable for
- Persons (including children) with limited physical, sensory, or mental abilities or a lack of experience and knowledge.
- Children (children must be instructed not to play with the device).
Included
Remove the product from the packaging and remove all packing material. Please check the completeness and integrity of the delivery and notify your distribution partner immediately after purchase if the delivery is not complete or if it is damaged.
The packaging includes
- 1 x PWT12IEC power supply unit
- 1 x Mains cable with IEC appliance plug
- 5 x DC cable 30 cm
- 5 x DC cable 60 cm
- 5 x DC cable 90 cm
- 1 set of self-adhesive rubber feet
- Operating instructions
PWT12IEC 
Connections & Operating Elements
- AC INPUT
IEC connection for the power supply of the unit. - POWER
A rocker switch for switching the device on and off. The switch has an indicator light. - DC OUTPUT
Non-isolated 9 V DC output with up to 2000 mA output current for effects units with high current requirements and external power supplies (e.g., PWT04) that do not require an isolated and filtered power supply. - USB
One USB-C and USB-A port, each with up to 18 watts total power for charging smartphones, tablets, and the like. - OUTPUT 1 AND 2
Two isolated DC voltage outputs with potentiometers for a continuously adjustable output voltage from 6 V to 18 V and up to 250 mA output current. Always set the required voltage BEFORE connecting the corresponding effect device. - OUTPUT 3 TO 6
Four isolated DC outputs with 9 V output voltage and up to 100 mA output current each. - OUTPUT 7 TO 10
Four isolated DC outputs with 9 V output voltage and up to 250 mA output current each. - OUTPUT 11 AND 12
Two isolated DC outputs with 9 V output voltage and up to 500 mA output current each.
Mounting
The housing of the power supply unit has mounting holes in the base plate and the side panels
Technical Data
- Product number PWT12IEC
- Product type Power Supplies
- Input voltage AC 100 – 240 V
- Individually isolated DC outputs 12
- Output 1-2 6 – 18 V (250 mA max)
- Output 3-6 9 V (100 mA max)
- Output 7-10 9 V (250 mA max)
- Output 11-12 9 V (500 mA max)
- Non-isolated DC output 9 V (2000 mA max)
- Output connections 2.1 x 5.5 mm
- Output voltage: 6 V – 18 V
- Max. Output power 30.6 W (output 1 – 12)
- Max. Power consumption 77 W
- Individually isolated outputs, yes
- Polarity Centre-negative
- USB-C / USB-A output power 18 W max.
- Display indicators Power
- Operating controls: Mains switch, output voltage selector
- Depth 93 mm
- Width 168 mm
- Height 42 mm
- Weight 0,54 kg
- Accessories: Mains cable, 15x DC cable (30 / 60 / 90 cm), 4x rubber feet
- Noise < 40 µV (output 1 – 12)
- Ambient temperature for operation: 0° to 40°C
- Relative air humidity <80%, non-condensing
Manufacturer’s Declarations
Herstellergarantie und Haftungsbeschränkung Manufacturer’s warranty & limitation of liability Adam Hall GmbH Adam-Hall-Str. 1 61627 Neu-Anspach, Germany.
CE Conformity
Adam Hall GmbH hereby confirms that this product, Palmer Pan16 19“ DI-bo,x meets the following guidelines (where applicable): Low-Voltage Directive (2014/35/EU), EMC Directive (2014/30/E/U), RoHS (2011/65/EU), RED (2014/53/EU)
FCC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.
UKCA- Conformity
Hereby, Adam Hall Ltd. declares that this product, Palmer Pan16 19“ DI-bo,x meets the following guidelines (where applicable): Electrical Equipment (Safety) Regulations 2016, Electromagnetic Compatibility Regulations 2016 (SI 2016/1091). The Restriction of the Use of Certain Palmer Pan16 19“ DI-box Hazardous Substances in Electrical and Electronic Equipment Regulation 2012 (SI 2012/),32,) Radio Equipment Regulations 2017 (SI 2016/2015), Adam Hall Ltd. | The Seedbed Bus. Centre | SS3 9QY Essex | UK
Customer Support
- Email: Info@adamhall.com
- Website: www.adamhall.com/compliance
- Ph: +49 (0)6081 / 9419-0
FAQs
Q: What is the Palmer PWT12IEC?
The PWT12IEC is a pedalboard power supply that offers USB charging for mobile devices or accessories in addition to clean, isolated power to several guitar pedals and effects units.
Q: Can I power pedals that require 18V?
Indeed. To support high-voltage pedals, some outputs can be switched to 18V DC. Before connecting, always make sure it is compatible.
Q: Can I use the power supply on a pedalboard?
Indeed. The PWT12IEC is lightweight and small, and it may be mounted to pedalboards with hook-and-loop tape or screws.
Q: Can I use it with digital pedals or multi-effects units?
Indeed. It works with both analogue and digital pedals; just make sure your current draw doesn’t go over each channel’s rated output.
Q: Is the PWT12IEC compatible worldwide?
It can be used internationally because it supports IEC mains input (100–240V AC). Depending on the country, a plug adaptor can be required.
Q: Can I leave the power supply on all the time?
Indeed. Although the PWT12IEC is intended to run continuously, adequate ventilation must constantly be maintained to avoid overheating.
Q: Can I power a tuner pedal and charge my phone at the same time?
Indeed. While the 9V outputs power your pedals, one of the USB outputs can be used to charge a phone. Just make sure the overall load doesn’t beyond the rating of the power supply.




