{"product_id":"groove-tubes-rectifier-gt-5u4-tube","title":"Groove Tubes Rectifier GT-5U4 Tube","description":"\u003cp\u003eIdeal for medium amps like early Super Reverbs or Band Masters. This tube can also substitute a 5Y3 to enhance dynamics and power output!\u003cbr\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp style=\"margin-bottom: 0px;\"\u003eIdeal for medium amps like early Super Reverbs or Band Masters. This tube can also substitute a 5Y3 to enhance dynamics and power output. Some users have swapped the 5AR4 in their Vox AC30 with a 5U4, noting a reduction in heat development and an extension in the lifespan of the power amplifiers. Additionally, this tube is recommended as a \"stability guarantee\" for those who can tolerate a minor reduction in performance. \u003c\/p\u003e","brand":"TFOA","offers":[{"title":"Default Title","offer_id":52624559538523,"sku":"107921","price":37.19,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/6607\/7019\/files\/image_1920_830c24a0-1779-4ac8-8c7e-fb0b717bc5d8.jpg?v=1774018285","url":"https:\/\/www.tfoa.eu\/en-int\/products\/groove-tubes-rectifier-gt-5u4-tube","provider":"TFOA","version":"1.0","type":"link"}