{"product_id":"fosi-audio-gr70-tube-headphone-amp-preamp-authentic-tube-amplification-with-vacuum-5654w-2-6ac7-2-mini-hifi-preamplifier-for-home-audio-3-5mm-6-35mm-jacks-supporting-16-300-ohms-impedance","title":"Fosi Audio GR70 Tube Headphone Amp Preamp, Authentic Tube-Amplification with Vacuum 5654W*2 \u0026 6AC7*2, Mini HiFi Preamplifier for Home Audio, 3.5mm \u0026 6.35mm Jacks Supporting 16-300 ohms Impedance","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePure Tube-Amplification: The GR70 headphone tube amp combines vintage charm with modern tech, delivering authentic tube essence. Perfect for headphone enthusiasts, it pairs excellently with over-ear and in-ear headphones for superior audio\u003c\/li\u003e\n\u003cli\u003eQuad Tubes: Features two 5654W and two 6AC7 vacuum tubes for two-stage amplification. The 5654W tubes boost voltage, while the 6AC7 tubes handle power amplification. This setup delivers balanced, transparent, and textured sound\u003c\/li\u003e\n\u003cli\u003eUser-Friendly Design: This tube headphone amp preamplifier offers intuitive controls, including a large volume knob, dual-side ventilation holes, bass \u0026amp; treble controls, high and low impedance mode switching, making it versatile enough\u003c\/li\u003e\n\u003cli\u003eTwo-in-One: It supports low and high impedance modes switching to adapt 16Ω-300Ω headphones, and features 6.35mm\/3.5mm headphone jacks on the front and RCA Input\/Output on the rear for home audio HiFi system integration\u003c\/li\u003e\n\u003cli\u003eCompact Yet Powerful: Crafted with a CNC-machined aluminum alloy body, the GR70 is both durable and refined. Despite its compact size, it delivers up to 300mW power output and 1.2V RCA output with SNR ≥97dB—offering warm, clean, and dynamic sound\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":48351237308637,"sku":"B0FB3P3RZT","price":331.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/3381\/6285\/files\/31PE0FmrmoL.jpg?v=1786234923","url":"https:\/\/listenora.us\/products\/fosi-audio-gr70-tube-headphone-amp-preamp-authentic-tube-amplification-with-vacuum-5654w-2-6ac7-2-mini-hifi-preamplifier-for-home-audio-3-5mm-6-35mm-jacks-supporting-16-300-ohms-impedance","provider":"Listenora","version":"1.0","type":"link"}