Description

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 clearly 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 Note: Please allow minor errors due to manual measurement. Item color displayed in photos may be showing slightly different since monitors are not calibrated same. Package Contents: 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: We only accept PayPal . PayPal is the only online payment method we accept. Please make sure you have a valid/confirmed PayPal account prior bidding. And please make sure that your PayPal registed address is the same with your eBay registed address. Shipping: It usually takes about 10-30 working days to arrive for economy shipping which not including tracking number; 7-15 working days for standard shipping which including tracking number. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance. Note: It may takes more than 30 working days to other countries such as Mexico,Brazil,Chile,Peru, because they is far away from China. PS: We also offer faster shipping service (3-5 days to deliver), such as DHL,EMS, but buyers need to pay for the extra shipping cost. Please contact us if you need it. Customs Declaration: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding. Return Policy: If you are dissatisfied with our item or service, then please follow the good eBay practice to contact us by eBay message before leaving any feedback. We are committed to resolve all issues in a friendly and satisfactory manner. We always reply to eBay messages within 1-2 business days. If you do not get a response from us, then please check your eBay message. Only unused, undamaged and original condition item can be qualified for a return. Feedback: We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any questions, please feel free to contact us instead of leaving negative feedback. We will reply your email within 24 working hours.