{"product_id":"fosi-audio-gr70-tube-headphone-amp","title":"Fosi Audio GR70 – Tube Headphone Amplifier \u0026 Pre-amp with 830 mW Output","description":"\u003cp\u003eThe Fosi Audio GR70 is a compact, hybridtube headphone amplifier designed todeliver the warm, rich, and musical sounosignature associated with vacuum tubescombined with the power and clarity ofsolid-state amplification.lt serves as anexcellent entry point into the world of tubeaudio for headphone enthusiasts.\u003cbr\u003eKey Features \u0026amp; Design\u003cbr\u003e1. Hybrid Tube Amplification: At the heartof the GR70 is its hybrid design.lt usesa vacuum tube in the pre-amplificationstage to impart the characteristic \"tubewarmth\" and harmonic richness to theaudio signal. This signal is then handedoff to a solid-state output stage, whichprovides the clean power and controlneeded to drive a wide range of\u003cbr\u003eheadphones efficiently. This design offers the best of both worlds: the pleasing sonic character of tubes without the high cost and maintenance of a full tube (OTL) amplifier.\u003c\/p\u003e\n\u003cp\u003e2.User-Interchangeable Tubes: Astandout feature is its ability to \"rol\" orswap tubes.The amplifier comes standard with a pair of 6J1 tubes, but users can easily replace them with\u003cbr\u003eother compatible tubes (like 6AK5 6AK5W, EF95, 5654) to subtly tailor the\u003cbr\u003esound to their preference. This allows for a personalized listening experience\u003cbr\u003e3. Dual Outputs with lmpedance\u003cbr\u003eMatching: The GR70 is equipped withtwo headphone outputs:\u003cbr\u003eLow-lmpedance Output(0-150Q):Optimized for most modern dynamic driver headphones,lEMs (In-Ear Monitors),and lower-impedance models.\u003cbr\u003e\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Silvery \/ US","offer_id":43725789069405,"sku":null,"price":233.99,"currency_code":"USD","in_stock":true},{"title":"Silvery \/ AU","offer_id":43725789233245,"sku":null,"price":233.99,"currency_code":"USD","in_stock":true},{"title":"Silvery \/ EU","offer_id":43725789266013,"sku":null,"price":233.99,"currency_code":"USD","in_stock":true},{"title":"Silvery \/ UK","offer_id":43725789298781,"sku":null,"price":233.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/Fosi_Audio_GR70_Tube_Headphone_Amp-20.webp?v=1761102575","url":"https:\/\/emiuzek.com\/pt\/products\/fosi-audio-gr70-tube-headphone-amp","provider":"EMiUZEK","version":"1.0","type":"link"}