{"product_id":"fosi-audio-gr40-tube-preamplifier-with-dac-stereo-headphone-amplifier-35mm-home-audio-for-active-speakersheadphones-digital-to-analog-audio-converter-preamp-with-bluetooth-and-usboptcoax","title":"Fosi Audio GR40 Tube Preamplifier with DAC, Stereo Headphone Amplifier 3.5mm Home Audio for Active Speakers\/Headphones, Digital to Analog Audio Converter Preamp with Bluetooth and USB\/Opt\/Coax","description":"Multifunctional DAC Preamplifier: The GR40 is a versatile tube DAC preamplifier and headphone amplifier in one. it supports Bluetooth\/USB\/Optical\/Coaxial inputs and active speakers\/3.5mm headphone output. with a priority mode for headphones\u003cbr\u003eHigh-Resolution Decoding: With the ES9028Q2M DAC chip. the preamplifier offers superior audio quality and flexibility. The USB sampling rate supports 32Bit\/384kHz and DSD256. making an effective noise reduction to ensure lossless audio every time\u003cbr\u003eAdvanced Bluetooth with Low Latency: Featuring the QCC3031 Bluetooth module. it supports aptX. aptX-HD. and aptX-LL codecs to provide detailed and clean audio sound. Also. you can get a relaxed experience with low latency when watching movies\u003cbr\u003eCompact yet Capable: With its compact form and a combination of preamp volume. bass. and treble controls. the stereo preamplifier produces a sweeter. more organic sound while preserving the midrange and treble frequencies that make music\u003cbr\u003eUser-Friendly Design: The digital-to-analog audio converter GR40 is designed with user convenience at its core. allowing you to toggle between different audio inputs and restore Bluetooth—a real Plug-and-plug DAC preamplifier without any driver\u003cbr\u003e\u003cli\u003eOutput: RCA. 3.5mm Headphone Output\u003c\/li\u003e\u003cli\u003eSNR≥103dB；THD＜0.03%；Power Supply: 12V 1.5A;\u003c\/li\u003e\u003cli\u003eBluetooth Codecs: SBC. AAC. aptX. aptX HD. aptX LL\u003c\/li\u003e1Multifunctional Preamp2ES9028Q2M DAC3QCC3031 Bluetooth Chip4Compact Size5Bass and Treble Controls1Ideal Partner to V32All-Aluminum Alloy3Rolling Vacuum Tubes4True Amplification5One-Click Switch1Home Theater2Headphone Experience3Wireless Streaming4Desktop Audio\u003cli\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003cp\u003e Bluetooth connection by others. what to do? \u003c\/p\u003e\n\u003cp\u003eLong press the Bluetooth reset button for 3 seconds; the Bluetooth indicator will flash. and the GR40 will enter pairing mode. Simply re-pair your device. \u003c\/p\u003e\n\u003c\/li\u003e\u003cli\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003cp\u003e Can headphones and RCA outputs be used simultaneously? \u003c\/p\u003e\n\u003cp\u003e The GR40 defaults to headphone priority output. To use RCA output. disconnect the headphones. \u003c\/p\u003e\n\u003c\/li\u003e\u003cli\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003cp\u003e What are suitable tube models for replacement? \u003c\/p\u003e\n\u003cp\u003e Tubes such as EF95. 6Ak5. 6AK5W. 403A\/403B. 6J1. 6J1P. 6J2. 6J3. 6J4. 6J5 are compatible. You can test and choose according to your personal preference. \u003c\/p\u003e\n\u003c\/li\u003e\u003ch1\u003e GR40 Vacuum Tube Preamp\/Headphone Amp with DAC\u003c\/h1\u003e\u003ch3\u003e Combining Vintage Warmth with Modern Clarity \u003c\/h3\u003e\u003ch4\u003e Tube Preamp\/Headphone Amp with DAC \u003c\/h4\u003e\u003ch4\u003eAccurate Sound Across a Wide Frequency Range\u003c\/h4\u003e\u003ch4\u003e Enhanced Audio Transmission with Bluetooth 5.1 \u003c\/h4\u003e\u003ch4\u003e Combining Vintage with Morden Technology \u003c\/h4\u003e\u003ch4\u003e With Central Detents \u003c\/h4\u003e\u003ch4\u003e Ideal Partner to V3In the Same Series and Form \u003c\/h4\u003e\u003ch4\u003e CNC Integrated Design \u003c\/h4\u003e\u003ch4\u003e With 5725W Tubes \u003c\/h4\u003e\u003ch4\u003e Crafting Unique Tones\u003c\/h4\u003e\u003ch4\u003e Quickly SwitchAmong 4 Digital Input Modes \u003c\/h4\u003e\u003ch3\u003e\u003c\/h3\u003e\u003cp\u003e Bluetooth connection by others. what to do? \u003c\/p\u003e\u003ch3\u003e\u003c\/h3\u003e\u003cp\u003e Can headphones and RCA outputs be used simultaneously? \u003c\/p\u003e\u003ch3\u003e\u003c\/h3\u003e\u003cp\u003e What are suitable tube models for replacement? \u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Default Title","offer_id":46272284098696,"sku":"661711090301534211-40950068-0-0-0-0-0-0","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/3284\/1096\/files\/196f6fa25af6e498421198ae084c1ca4aca16937b3a18982450ed76b9a573a78.jpg?v=1785831976","url":"https:\/\/apllnsr.shop\/products\/fosi-audio-gr40-tube-preamplifier-with-dac-stereo-headphone-amplifier-35mm-home-audio-for-active-speakersheadphones-digital-to-analog-audio-converter-preamp-with-bluetooth-and-usboptcoax","provider":"BEZAI BRUCE","version":"1.0","type":"link"}