529 HC


Ultra-quiet, high efficiency USB power converter for high power digital effects.

The 529 HC converts a USB C power source such as a rechargeable battery pack into a stable 9V DC output suitable for high power digital devices.


The output is optimized for extremely low noise to provide the best performance with sensitive digital effects units. The high-efficiency design ensures the longest possible battery life and minimal wasted energy.The 529HC is approved for use with the Line 6 HX Stomp.


The Standard version is recommended for most users. It includes tested cables, adapters, and US wall power supply. The Basic version is intended for use as a spare, and for pedalboard manufacturers, guitar techs, and others providing their own USB cable and power sources. Note that we cannot guarantee operation when using cables, adapters and power sources not tested or supplied by Mission.

SKU: P-529HC-C-USCategory:

5V USB 3.0 Type C

1 x 9V 2000mA 2.1mm center pin negative

Quiescent Current

3.25″ x 2″ x 1″

Aluminum case
Blue anodized

Basic version
529 HC power converter
2.1mm 9V DC cable
2.1mm – 2.5mm DC cable adapter

The Mission 529 and 529HC are two of the lowest noise pedal board power supplies available. Check out the test results to see noise measurements of the 529 compared to some other isolated pedal board power supplies.

9VDC trace from another brand of switching pedal board power supply
9VDC trace of the Mission 529
9VDC trace of toroidal power supply

The traces above show a 9VDC power output from the Mission 529 compared to another brand of isolated power supply using an external AC/DC switching supply. For reference there is also a trace from a large, premium power supply with an internal toroidal transformer. Toroidal transformers are sometimes quoted in systems specs as being important for low noise.

As you can see from the traces, the 9VDC from the 529 and toroidal supply are virtually identical, whereas the other switching supply is somewhat noisier.

Audio trace from another brand of switching power supply
Audio trace of the Mission 529

The second set of traces above shows what can happen when switching noise passes into the audio path. In this test, two power supplies are powering a compressor pedal. A test signal representing the guitar is generated at the input and measured at the output.

You can see in the first trace of another brand of power supply that there is some noise superimposed on the audio signal. In the second trace, where the 529 is powering the effect pedal, this noise is removed.

With just 13mA quiescent current and high efficiency converters, the 529HC provides long battery life and minimal wasted energy. As an example, run time for a Line 6 HX Stomp on a single charge of a 10,000mA/h USB battery pack is over 3 hours.

* The 529 HC requires a USB C power source. Mission has tested and recommends the following portable power banks:

Mission 529 PD battery pack – 13400mAh
Naztech Super Speed – 26800mAh
Anker Powercore+ – 26800mAh

Weight1 lbs
Dimensions9 × 6 × 4 in