Description

Multiple audio inputs: with Bluetooth/USB/RCA/3.5mm AUX inputs, can be perfectly compatible with iPod, Phone, MP3, TV, CD players, laptop, desktop computer etc., satisfy most requirements of common home audio system use. Multiple functions: Can be used as a tube preamp, connected between audio source and amplifier or active speaker to greatly improve the sound quality. Can be used as a headphone amp, MC33078 chip, support 16-64Ω headphones, convenient to listen to lossless music alone or at night. Can be used as a USB DAC, support 24Bit/192Khz sampling rate to provide sound with higher quality and lower distortion, no need for any driver, plug and play. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Bluetooth Vacuum Tube Preamp Stereo Receiver USB DAC Desktop Headphone Amp Item description Features Multiple audio inputs: with Bluetooth/USB/RCA/3.5mm AUX inputs, can be perfectly compatible with iPod, Phone, MP3, TV, CD players, laptop, desktop computer etc., satisfy most requirements of common home audio system use. Multiple functions: Can be used as a tube preamp, connected between audio source and amplifier or active speaker to greatly improve the sound quality. Can be used as a headphone amp, MC33078 chip, support 16-64Ω headphones, convenient to listen to lossless music alone or at night. Can be used as a USB DAC, support 24Bit/192Khz sampling rate to provide sound with higher quality and lower distortion, no need for any driver, plug and play. HiFi clear sound and unique design: Built-in vacuum tubes design to filter out the digital sounds, the sound warm and sweet, full and mellow, much softer and more listenable. Default 6K4 tubes, and can be directly replaced by 6J1/ 6J4/ GE5654/ 6AK5/ 6*1N to enjoy HiFi sound of different styles. With ±14dB treble and bass control, and bypass function is specially designed to turn on/off the tone control, more convenient to enjoy original sound or obtain more delicate sound with treble and bass control knob, adding much fun and higher playability. Mini size and exquisite appearance, aluminum case make it more fashionable and powerful. With OLED display can cl early show the working status in real time, and full-function remote control makes the operation much easier, very suitable for home and desktop audio system use. Warm tips: 1. 6.35mm headphone jack with priority, RCA output will auto disconnect when headphone is connected. 2. The USB interface doesn't support U-disk, and supports PC-USB and mobile phones which with OTG function (Android system needs OTG cable and IOS system needs large current camera kit, please prepare by yourself). 3. Want upgraded GE5654 vacuum tube to improve sound quality please click: LINK . And for safer delivery, the remote control may not include battery(CR2025), please prepare it by yourself. 4. For environment protection and energy saving, the preamp will auto turn off when there is no audio signal input for 30 minutes. Parameters Audio input: Bluetooth/PC-USB/Stereo RCA/3.5mm AUX Audio output: Stereo RCA / 6.35mm headphone jack Chipset: CSR8635+MC33078*8+HS-100B+PT2314+TL494 PC-USB sampling rate: 16bit 44.1/48KHz PC-USB operation systems: Windows XP/Vista7/8/10/Max OS Tube model: 6K4*2 LINE Output Part Treble & bass range: ±14dB (2dB/step) Frequency response: ±0.18dB (20-20KHz) Max output level: 5Vrms THD+N: 0,3% SNR: 100dB Headphone Output Part Output power: 100mW@32Ω Frequency response: ±0.2 dB (20-20KHz) THD+N: 0.31% SNR: 98dB Matched headphone impedance: 16-64Ω Working voltage: DC 12V (above 1A) Dimensions(W*D*H): 130*108*31mm / 5.12*4.25*1.22in Net weight: 440g / 0.97lb Package weight: 750g / 1.65lb Packing List 1 x Tube Preamp 1 x DC12V Power Adaptor 1 x Remote Control (without batteries) 1 x Bluetootn Antenna 1 x 6.35mm to 3.5mm Headphone Adapter Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 Days We provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items( Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers’ listening experience. Contact us Please don't hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN) Monday-Friday 09:00 AM - 18:00 AM New York(US) Sunday to Thursday 08:00 PM - 05:00 AM London(UK) Monday-Friday 01:00 AM - 10:00 AM Paris(FR) Monday-Friday 02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please don't leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us