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Truetone 1 Spot 9V DC Review – Switching Power Supply

Hello there, welcome to another article here for you! This time we will be looking at an adapter for your guitar pedals, processors and effects. In this brief article, I would like to introduce you to the Trutone brand and provide you with the Truetone 1 Spot 9VDC review.

For those who have never heard of the Truetone brand, they are a US company mostly focusing on power supplies, buffers, converters and some guitar pedals.

Truetone 1 Spot Label

Truetone 1 Spot Label

*Just as a side note: the label states a UK address and a postcode. But on their official website, their address is in the USA. Confused 🙂

They are a very small company and it seems like a handful of people are managing it. To be honest, I have never tried any of their pedals, nor heard about them before.

But since I was looking for a solid power adapter for my ENGL Cabloader, I went through many user reviews and decided to give it a shot.

According to Thomann’s user reviews, Truetone 1 Spot 9VDC has received 530 reviews with an average score of 4.7/5.

Truetone 1 Spot 9V/DC

Truetone 1 Spot 9V/DC

Before I give you my opinions and a quick demo video showing the issue I have encountered, I would like to provide you with the tech specs below.

According to their website, 1 Spot has been designed not to take much space in your pedalboards and is able to feed one to over twenty guitar pedals (1700mA maximum current)

Truetone 1 Spot 9V/DC Tech Specs

DC/AC currentDC
Voltage9V
Current1700mA
Connection cable3m (appr.)
PolarityNegative Centre
Auto-switch internal voltage100V/240V

1 Spot can be used with optional multi-plug cables for powering more than one pedal and can ever work with Line 6 modelling pedals.

It also features an auto-switch that switches/converts international voltage from 100V to 240V.

It is also claimed that it has triple filtering the output for clean and quiet power.

As far as the packaging, you will have a simple cartoon box with a paper bag printed with some Truetone pedals and simple specs and a safety sheet.

Truetone 1 Spot 9V/DC Box/Packaging

Truetone 1 Spot 9V/DC Box/Packaging

When I first ordered my Truetone 1 Spot 9VDC along with an ENGL Cabloader, I had no issues for a couple of days. As far as I remember, on the 4th or 5th day, I switched my ENGL E570 preamp, then the Truetone power supply.

But only E570 worked! Nothing else worked! I tried plugging into other wall sockets but to no avail.

Sadly, I had to contact Thomann and create an RMA ticket. As usual, by the time returned items arrived at Thomann, they already prepared and sent new ones! They didn’t even make me wait and investigate the issue! That’s why you should always consider becoming a Thomann customer 🙂

Check out my “Why Thomann is the best music store?” article!

Surprisingly, Thomann reported that there was no issue found with either ENGL Cabloader or Truetone 1 Spot! I even insisted to know if this weird issue was caused by the power supply or pedal. But since both items functioned, they weren’t able to answer the question. 🙂

Since then, I have never had any issues with using this power supply, except for the weird noise it generates.

Truetone 1 Spot 9V DC Adapter review video

When plugged into ENGL Cabloader, it creates these weird, sine-like sounds that come from the plug itself. I have also tested this with a Nux Rivulet Chorus, but it didn’t happen.

In order to document everything, I have also prepared a short video showing you the issue I’m talking about.

To be honest, this doesn’t affect any functionality of the pedal. But it’s kind of weird because you keep hearing this sound all the time. I’m not 100% sure if this is also causing any noise in my guitar signal chain.

I think Truetone 1 Spot 9V/DC is still a legit and powerful power supply for many guitar setups. However, I’m not happy with my purchase completely. For this reason, I have already purchased a Voodoo Lab Pedal Power X4 and tested it. It doesn’t make any noise at all, but again in order to compare these side by side, I will need to provide you with another article.

Read my “Voodoo Lab Pedal Power X4 review, tiny but mighty” article here!

In any case, I will keep this Truetone 1 Spot adapter anyways. It may come in handy one day for other purposes. As I really would like to keep it honest and very open with you here, I wanted to share every single detail and my findings regarding this power supply.

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I’m sure you will probably have no issues or noise using this power supply. However, it is up to you. As proved here, it may produce weird noises with some pedals. This has been also posted by some user reviews at Thomann. So bear these in mind! 🙂

I hope you have enjoyed this article and found it helpful at least. Thanks for visiting my blog and supporting me so far! I will hopefully see you in the next review here!

Osman