{"version":"1.0","provider_name":"Pedaltown","provider_url":"https:\/\/www.pedaltown.nl\/en","author_name":"Leon Keemer","author_url":"https:\/\/www.pedaltown.nl\/en\/author\/wpkeemski","title":"JAM pedals RetroVibe mk.4","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"3ell5tc3UX\"><a href=\"https:\/\/www.pedaltown.nl\/en\/product\/jam-pedals-retrovibe-mk-4\">JAM pedals RetroVibe mk.4<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.pedaltown.nl\/en\/product\/jam-pedals-retrovibe-mk-4\/embed#?secret=3ell5tc3UX\" width=\"600\" height=\"338\" title=\"&#8220;JAM pedals RetroVibe mk.4&#8221; &#8212; Pedaltown\" data-secret=\"3ell5tc3UX\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.pedaltown.nl\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/pedaltown.nl\/wp-content\/uploads\/2026\/01\/Jam-Pedals-RetroVibe-mk.4-1.jpg","thumbnail_width":500,"thumbnail_height":500,"description":"JAM pedals RetroVibe mk.4 is a highly regarded Uni-Vibe\u2013style modulation pedal, celebrated for its warm, flowing pulse and distinctive shimmer. This fourth generation preserves the fully analog soul of the original while adding modern features for greater expression and performance flexibility.  With an expanded Depth and Speed range, it delivers everything from slow, liquid modulation to fast, swirling, rotary-like Uni-Vibe tones. A dedicated switch lets you easily move between Chorus and Vibrato modes, always retaining the unmistakable RetroVibe character.  New Tap Tempo and Ramping functions allow smooth, musical transitions between modulation speeds while playing. Connect a passive 10k expression pedal for real-time control over modulation speed and added dynamic movement.  The RetroVibe mk.4 is the ideal choice for guitarists seeking an authentic Uni-Vibe, chorus, and vibrato pedal with modern control and a timeless, analog sound. JAM pedals RetroVibe mk.4 demo video https:\/\/youtu.be\/uENZ7AKaCME?si=ZSM_FBWwHO0K97wj"}