JP-02 Power Supply 2 review by Joyo

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  • Sound: 7
  • Overall Impression: 8
  • Reliability & Durability: 9
  • Ease of Use: 10
  • Reviewer's score: 8.5 Superb
  • Users' score: 7.2 (9 votes)
Joyo: JP-02 Power Supply 2
2

Price paid: $ 88

Purchased from: Ebay

Sound — 7
I am using it to power 7 pedals (EHX Holy Grail, TC-Nova, etc) that are very noisy in a daisy chain setup, and a Fulltone GT-500 that I run at 12V. BUYER BE WARE: Just because a lot of manufacturers call a power supply "isolated" does not mean it completely is! This goes for several brands but also for this Joyo unit. It has a well made PCB and filters inside (so it is not a glorified daisy chain in a box), and it actually does eliminate 99% of the noise you get from notorious pedals like the EHX Holy Grail and digital effects like the TC electronics range. So far so good right? Well, no.. Like a lot of affordable power supplies it does not have isolated grounds! That means you can not use your Vintage positive ground effects, without destroying your effects and/or power supply (No: that has nothing to do with positive or negative center connectors). That is something they should have mentioned in the manual. On the other hand, lots of other brands don't either and that is a total shame! I am impressed with build quality and the fact that it does eliminate virtually any noise that you get when you put the same effects in a daisy chain. It actually scores a 9, but for not warning people about the "common ground", a 7 is in order.

Overall Impression — 8
I've been playing for over 12 years and own several amps and about 15 stomp boxes, from homemade Fuzz to T.C Nova. This power supply feeds my "favourites" board that has 7 effects on it. For the price, nobody can beat this thing! People are skeptical because it is from the far east, but ask yourself this: What are Asian factory's best at? Indeed, electronics. I have opened up the metal box and inside is a quality PCB with traces and components that are assembled in the same tidy manor as your average Apple PCB. If it got stolen, I'd buy it again, unless they start building one for all those people that want to use both negative and positive ground pedals!

Reliability & Durability — 9
It does protect your pedals! Apart from filtering noise, it has one L.E.D per connection. When a pedal pulls too much current, the corresponding L.E.D will flash and the max current will be limited, preventing a pedal meltdown, unlike a Onespot. Now that's what you'd expect from a good power supply! It appears to be very well made in a sturdy metal box. Too bad the power input on the box is on the front, where the outputs are too.

Ease of Use — 10
Price paid includes shipping to the Netherlands. Well, it is a power supply. Plug it into the wall and connect pedals. Manual is included but doesn't add much information to what any guitarist allready knows. They should have mentioned something that I will write down below.

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