Have you ever found the strange noises jumping out of nowhere when using several pedals together? The biggest reason that produces such annoying sound is that pedals are connected in a parallel mode. With such parallel connection, each pedal forms a ground loop, which brings the noises from other magnetic fields into the signal path and all the other pedals are interfered and become unstable. To solve this problem, all need to do is to get rid of the ground loop and make sure each pedal work in an independent route and most importantly choose a power supply with real independent output free from ground loop troubles. Well, here is JOYO JP-04 right made for you!
JOYO JP-04 is an isolated power supply available for guitar pedals. It uses a high quality R transformer. It has eight 9V outputs with independent power cable and ground wire, each output is completely isolated, short-circuits and over current protected, highly filtered and regulated, This ensures reliable operation, free of hum and noise. It will provide you a clean and transparent sound.

Product Page

Demo by Alexandre Almeida

Review by reddit /guitarpedals

Manual

Demo by GuitarGodgt

JP-04

Uses the BBD circuit to achieve great metallic flange sounds, wave like chorus sounds plus rapid tremulous vibratos! 4 adjustable knobs control Speed, Regain, Width and Delay Time.

Review by Ultimate Guitar

Review by reddit.com /guitarpedals

Demo by CheaperPedals.com

Demo by KDM Pedals

Demo by Berger

JF-07 Classic Flanger

Preamp House is the newly released pedal from JOYO R series, delivering 9 amps’ preamps in one pedal! It has 65Twin / JCM900 / AC30 / LONESTAR / DUAL RECTIFIER / 5150Ⅲ / POWERBALL / TH200 / BE100 and more, each amp features clean channel and distortion channel and can be switched by Footswitches( 18 tones in all)! Due to the 2 channel design, you can switch easily between Fender’s Clean and Marshall’s Distortion! One built-in cabinet simulation facilitates stage performance. FX LOOP interface for external FX pedal, balanced Output. Preamp House is an user-friendly and stable tone solution for musicians who perform and record frequently.

Official Product Video

Demo by woodsnstrings

Review by Johannes Krayer, amazona.de

R-15 Preamp House

QUARIUS is a multi-mode digital delay pedal with 8 digital delay effects. Apart from the iconic digital, analog delay effects, there are well-designed styles such as Low bit, Galaxy and more. Tap Tempo enables you to adjust delay’s speed. It also features LOOPER function, 5 minutes recording time. What distinguishes AQUARIUS from similar products is that LOOPER and Delay functions can be used simultaneously.

Demo by Fabian Lopes

Review by Stephan Güte, amazona.de

R-07 Aquarius

The RAPTOR, just like its fighter jet brother, can give you the roaring sound of a jet engine, which is what great flangers are known for, the jet-flanger sound. But with four parameters you can control there is a lot more to be discovered in the extremely small pedal. Based on a classic BBD (Bucket Brigade Design), this flanger can deliver a deep and rich tone. Speed, Regen (Regeneration), Width and Delay allow you to dial in your own sound. Regen gives you more feedback for an enhanced “roar”. Our unique KNOB GUARD protects your settings during travel and ensures that your sound is there when you need it! A True Bypass circuit minimizes signal loss.

Demo by FX Music Group

Review by Talk Bass.com