{"product_id":"union-audio-four-valve-limited-55-edition-440068","title":"four.valve limited 55 Edition","description":"\u003ch3\u003eA collectible four.valve, blending vinyl heritage with elara spirit\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eUnion Audio four.valve Limited 55 Edition\u003c\/strong\u003e pays tribute to analog DJ culture and the connection between turntable, record and mixer. Produced as a unique run of 550 individually numbered units, it retains the four.valve's tube-based architecture while adopting certain aesthetic cues and control elements from the elara and Signature Series ranges.\u003c\/p\u003e\u003cp\u003eThis edition also features a \u003cstrong\u003ecustom discrete operational amplifier\u003c\/strong\u003e, developed by Andy Rigby-Jones, founder of Union Audio. Its aluminum front panel, knurled controls, gold-colored elements and wooden side panels create a look that coordinates with the limited-edition Technics SL-1210 MK7.\u003c\/p\u003e\u003ch3\u003eFor DJs who put listening and hands-on control first\u003c\/h3\u003e\u003cp\u003eThis rotary DJ mixer is aimed at professionals, vinyl enthusiasts and discerning hi-fi enthusiasts. In a club, studio, listening bar or high-end private installation, it prioritizes level control, smooth transitions and musicality.\u003c\/p\u003e\u003cp\u003eThe damped rotary controls invite you to create gradual fades, while the Innofader crossfader enables different mixing approaches. Separate Master, Booth and Record outputs make it easy to integrate the mixer with a sound system, booth monitoring and a recording setup.\u003c\/p\u003e\u003ch3\u003eExpressive tubes and precise signal control\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003efully analog\u003c\/strong\u003e audio path preserves the four.valve's sonic character. Driven moderately, the tubes add warmth, depth and harmonic richness. Pushing them harder produces gentle, natural compression—a way to shape the mix's texture and dynamics.\u003c\/p\u003e\u003cp\u003eEach channel features phono and line inputs on RCA connectors, a 3-band EQ with a natural response and an auxiliary send. The 3-band Master isolator and adjustable-frequency high-pass filter complete the sound-shaping section. The Send\/Return connections and inserts make it possible to integrate external effects processors.\u003c\/p\u003e\u003cp\u003eFor cue monitoring, the headphone amplifier combines power, Split Cue functionality and a Cue\/Mix control. Two headphone sockets accommodate 6.35 mm and 3.5 mm jack plugs. The analog VU meters with phosphorescent finishing complete this interface, designed to maintain a direct connection with the signal.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cstyle\u003e@media(max-width:632px){table[data-wb-spec]{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}table[data-wb-spec] colgroup{display:none}table[data-wb-spec] tbody,table[data-wb-spec] tr{display:contents}table[data-wb-spec] td{display:block;overflow-wrap:anywhere;grid-row:var(--wb-l);background-color:var(--wb-lb)}table[data-wb-spec] td[data-r]{grid-row:var(--wb-r);background-color:var(--wb-rb)}table[data-wb-spec] td[colspan=\"2\"]{grid-column:1\/-1}table[data-wb-spec] td:empty{display:none}}\u003c\/style\u003e\n\u003ctable data-wb-spec style=\"width:100%;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003c\/colgroup\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:1;--wb-r:4;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eAnalog\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eMotorised faders\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eNo\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:2;--wb-r:5;--wb-lb:transparent;--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eUSB stereo recording \/ playback\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eNo\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eLine outputs\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eXLR, Stereo - 6.35mm jacks - Dry signal\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:3;--wb-r:6;--wb-lb:var(--wb-neutral-50);--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eNumber of faders\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e4\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eHeadphone output\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eMini jack, Jack 6.35\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ctable data-wb-spec style=\"width:100%;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003ccol style=\"width:25%\"\u003e\u003c\/colgroup\u003e\n  \u003ctr style=\"background-color:transparent;--wb-l:1;--wb-r:3;--wb-lb:var(--wb-neutral-50);--wb-rb:var(--wb-neutral-50)\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003eEdition\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003eLimited 55 Edition, celebrating the 55th anniversary of the Technics SL-1200.\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eChannel high-pass filter with adjustable cutoff frequency\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e-3 dB at 1,500 Hz at the maximum clockwise position.\u003c\/td\u003e\u003c\/tr\u003e\n  \u003ctr style=\"background-color:var(--wb-neutral-50);--wb-l:2;--wb-r:4;--wb-lb:transparent;--wb-rb:transparent\"\u003e\u003ctd style=\"text-align:left\"\u003e\u003cstrong\u003e3-band Master Isolator\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003e200 Hz \/ 800 Hz \/ 2,000 Hz.\u003c\/td\u003e\u003ctd data-r style=\"text-align:left\"\u003e\u003cstrong\u003eFader shutoff attenuation\u003c\/strong\u003e\u003c\/td\u003e\u003ctd data-r style=\"text-align:left;font-weight:var(--font-body-weight-bolder)\"\u003egreater than 80 dB.\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Union Audio","offers":[{"title":"Default Title","offer_id":67781840339219,"sku":"440068","price":3299.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0872\/6803\/files\/0e531cf9a951ebabd8a7f5bf15fa910ccc413be7_UA_4V55_BK_UNI.jpg?v=1792675985","url":"https:\/\/woodbrass.shop\/products\/union-audio-four-valve-limited-55-edition-440068","provider":"Woodbrass.com","version":"1.0","type":"link"}