{"product_id":"tube-preamplifier-4-in-2-out-hifi-preamplifier-6h3n-tube-5332-op-amp-chip-high-power-headphone-amplifier-high-bass-adjustable","title":"Tube Preamplifier 4 In 2 Out HIFI Preamplifier 6H3N Tube 5332 Op-amp Chip High Power Headphone Amplifier High Bass Adjustable","description":"\u003cp\u003eA 4-input, 2-output Class A tube preamplifier built around a 6H3N tube stage paired with a 5332 op-amp, giving you tube-warmed gain staging with the flexibility to switch between multiple sources. A solid option for anyone building a hi-fi system around vintage speakers and wants a preamp stage with real tube character rather than a fully solid-state chain.\u003c\/p\u003e\u003cp\u003eUseful both as a finished unit for a listening setup and as a reference design for tube-circuit builders wanting to study a working Class A preamp topology. Pair with our vacuum tubes and sockets if you want to experiment with tube rolling.\u003c\/p\u003e","brand":"Big River Hardware","offers":[{"title":"AC 100V-240V","offer_id":50731179671858,"sku":"1005005809070392-AC 100V-240V","price":206.99,"currency_code":"USD","in_stock":true},{"title":"AC 100V-240V 1","offer_id":50731179704626,"sku":"1005005809070392-AC 100V-240V 1","price":206.99,"currency_code":"USD","in_stock":true},{"title":"AC 100V-240V 2","offer_id":50731179737394,"sku":"1005005809070392-AC 100V-240V 2","price":265.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/5097\/2245\/files\/S94cc6fbbc0374a89bf0d5bf8bc948af1o.webp?v=1774228318","url":"https:\/\/bigriverhardware.com\/products\/tube-preamplifier-4-in-2-out-hifi-preamplifier-6h3n-tube-5332-op-amp-chip-high-power-headphone-amplifier-high-bass-adjustable","provider":"Big River Hardware","version":"1.0","type":"link"}