[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fbwehgvrrbmlq":3},{"id":4,"name":5,"slug":6,"tags":7,"image":13,"bestFor":30,"formats":34,"seoTitle":36,"versions":37,"developer":65,"categories":66,"visibility":68,"description":69,"limitations":70,"productRole":73,"architecture":74,"lastReviewedAt":43,"metaDescription":75,"inventoryAliases":76,"relatedPluginIds":78,"searchCategories":79,"taxonomyFamilies":82,"officialSourceUrl":83,"taxonomyAttributes":84,"alternativePluginIds":86,"taxonomyCapabilities":87},"plugins4free-3539","OS-251","os-251",[8,9,10,11,12],"Free Plugin","lo-fi","digital synthesizer","subtractive synthesis","onsen audio",{"alt":14,"url":15,"width":16,"height":17,"selected":18,"fetchedAt":19,"sizeBytes":20,"sourceHost":21,"sourceKind":22,"attribution":23,"contentHash":24,"contentType":25,"originalUrl":26,"rightsStatus":27,"sourcePageUrl":28,"transformVersion":29},"OS-251 plugin interface","\u002Fplugin-artwork\u002Fos-251-7cd8194b8d0e661f.webp",468,273,true,"2026-08-18T14:53:00.602Z",19060,"plugins4free.com","directory","Plugins4Free","7cd8194b8d0e661fa7bb3a4d4f29ec9e94ed192460dc1752b068158720a63a80","image\u002Fwebp","https:\u002F\u002Fplugins4free.com\u002Fimg\u002Fonsen-audio-OS_2.jpg","official","https:\u002F\u002Fplugins4free.com\u002Fplugin\u002F3539","indie-subtle-v1",[31,32,33],"Lo-fi music production","Digital subtractive synthesis","Creating warm, vintage-style synth sounds",[35],"VST3","OS-251 Free VST3 Plugin for Windows | IndiePlugins",[38],{"formats":39,"version":41,"packageId":42,"preferred":18,"reviewedAt":43,"packageKind":44,"architecture":45,"packageHealth":47,"downloadSource":53,"installSupport":57,"artifactEvidence":58},[40],"VST2","1.0.0","plugins4free-3539-3539-os-251-windows-zip","2026-08-18T14:53:00.692Z","zip",[46],"x64",{"status":48,"message":49,"checkedAt":50,"consecutiveFailures":51,"automaticInstallAllowed":52},"needs-review","Archive contains a Windows installer.","2026-08-18T02:24:24.322Z",0,false,{"type":54,"pageUrl":28,"fileName":55,"pluginId":56},"plugins4free","OS-251-Windows.zip","3539","guided",{"size":59,"sha256":60,"fileKind":44,"finalUrl":61,"contentType":62,"inspectedAt":50,"archiveEntries":63},2225169,"8fbdde7c197eb0d87db42b88bb956b1f59ba0653609fd3321ed9f6dfdf09f92f","https:\u002F\u002Fplugins4free.com\u002Fget_plug\u002FOS-251-Windows.zip","application\u002Fzip",[64],"OS-251-Windows.exe","Onsen Audio",[67],"synthesizer","public","OS-251 by Onsen Audio is a pure digital lo-fi synthesizer featuring a JUNO style digital subtractive synthesis with warm, digital DSP algorithms for unique lo-fi sounds.",[71,72],"Available only in VST3 format (input mentions VST2 download but primary source specifies VST3)","Requires 64-bit architecture","instrument",[46],"Explore OS-251 by Onsen Audio, a free digital lo-fi subtractive synthesizer plugin with powerful DSP algorithms that deliver warm, vintage-style sounds. Availab",[5,77],"OS 251",[],[80,67,81],"Lo-fi","lofi",[67,81],"https:\u002F\u002Fonsenaudio.com\u002F",[81,85],"analog",[],[]]