Amazing combination in appearance and functions: integrated DAC-T1-PRO DAC with retro tubes and modern OLED display into a whole, keep both strong vintage feelings and convenient use. Even in limited space, warm filament dynamically decorates the audio system and give you a wonderful acoustic enjoyment with large dynamic and sweet sound. With multiple audio inputs and outputs: Bluetooth / PC-USB / coaxial / optical / RCA inputs, compatible with most audio sources such as phone, tablet, computer, digital player etc. With stereo RCA and 3.5mm headphone jack outputs, can connect different amplifier / active speaker / headphones, HiFi music can be easily enjoyed. 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Sign Up Now ! HiFi Tube Preamp with Bluetooth Receiver USB DAC COAX/OPT D/A Audio Converter Item description Shipping from USA Warehouse, 1-6 Working days to most US regions. Features Amazing combination in appearance and functions: integrated DAC-T1-PRO DAC with retro tubes and modern OLED display into a whole, keep both strong vintage feelings and convenient use. Even in limited space, warm filament dynamically decorates the audio system and give you a wonderful acoustic enjoyment with large dynamic and sweet sound. With multiple audio inputs and outputs: Bluetooth / PC-USB / coaxial / optical / RCA inputs, compatible with most audio sources such as phone, tablet, computer, digital player etc. With stereo RCA and 3.5mm headphone jack outputs, can connect different amplifier / active speaker / headphones, HiFi music can be easily enjoyed. Imported JAN5654 tubes and vintage warm sound: comes with JAN5654 tubes, greatly improves everything associated with your music, sounds soft and delicate, dynamic and pleasing. Easy to compare the difference between digital sound and tube sound via bypass function. Pluggable tube socket design, upgrade to 6*1N, 6AK5, EF95 etc. to enjoy tube sound of different styles. Complete design and perfect details: support treble and bass control, easy adjust one's own preferable sound styles. Besides large OLED display to indicate working status, also with full function remote control to achieve all settings. Powerful function with attractive appearance, very suitable for the audiophiles who pursue HiFi sound in limited space. High-end materials and unique structure are adopted to ensure better performance:QCC5125 Bluetooth chip, supports ACC/SBC/APTX/APTX-HD/LDAC, achieves further distance and lossless signal transmission without delay.ESS9028Q2M independent DAC chip, OPA1656 op amp, NJW1194 digital tone control chip, with larger dynamic range, lower distortion and higher resolution.9123 USB chip with special driver, support 24Bit/192Khz transmission to improve the sound quality.Classic headphone amp architecture (2*NE5532), provide larger output power enough to drive 300Ω headphones. Parameters Chip architecture: QCC5125 (Bluetooth chip) + 9123 (USB chip) +ESS9028Q2M (DAC chip) + NE5532 (amp) Audio input: Bluetooth / PC-USB / Coaxial / Optical / Stereo RCA Audio output: Stereo RCA / 3.5mm headphone jack Bluetooth version: 5.0 (support APTX /APTX-HD / LDAC) Sampling rate supported:PC-USB: 24bit / 192KHzCoaxial / Optical: 24bit / 192KHz PC-USB operation system supported: W7/W8/W10/MAC/Linux Frequency response: 20Hz-20KHz (±0.5dB) THD: 0.08% S/N ratio: ≥110dB Treble / Bass control: ± 6db Matched headphone impedance: 16-300Ω Headphone output power: 150mW Output level: 2.4Vrms Working voltage: DC 12V Dimensions(W*D*H): 185*128*41mm / 7.28*5.04*1.61in Net weight: 622g / 1.37lb Package weight: 1.1kg / 2.43lb Warm tips: 1. For safer and faster delivery, the remote control may not include batteries (2*AAA), please prepare it by yourself.2. 3.5mm headphone jack output is prior, stereo RCA output will auto disconnect when headphone is inserted.3. PC-USB (systems below win10) input need special driver to get 24Bit/192KHz transmission, please contact us for it when you receive DAC-T1 PRO. It also supports OTG functions, but Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself. Packing List 1*DAC-T1 PRO DAC 2*5654 Vacuum Tube 1*DC 12V Power Adapter 1*USB Cable 1*Optical Cable 1*Bluetooth Antenna 1*Remote Control (without batteries) 1*User Manual Payment Fast Shipping Return Policy About us Contact us Payment Safe and secure payment by PayPal. Fast Shipping The items are located in US, and will be shipped within 1 working day, 2-6 working days to deliver. Return Policy Free Return Within 30 Days We provide free return with 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. 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