Description

HiFi Bluetooth 5.0 Vacuum Tube Preamp Stereo Receiver Headphone Amp USB Player Description Multiple audio inputs: with Bluetooth/RCA/U-disk inputs, can be perfectly compatible with iPod, Phone, MP3, TV, CD players, laptop, desktop computer or other streaming media players etc., satisfy most requirements of common home audio system use. Multiple functions: Can be used as a tube preamp, can soft and warm the sound and greatly improve the sound quality when connected between audio source and amplifier or active speaker. Can be used as a headphone amplifier, convenient to listen to lossless music alone or at night. The RCA and 3.5mm headphone jack can output at the same time to meet more needs. Can be used as a digital player with U-disk inputs, supporting MP3 and other lossless format such as APE, FLAC, WAV, WMA. No need for any driver, plug and play, convenient to enjoy fun even on the road or outdoors. HiFi clear sound with tone control and reasonable circuit layout: adopting vacuum tubes design to filter out the digital sounds of common sound sources, making the sound warm and sweet, full and mellow, much softer and more listenable. And using NE5532 op amp for tone control, treble and bass can be adjusted separately, easy to adjust more delicate sounds of different styles. Proper size and exquisite appearance, black aluminum case make it more fashionable and powerful. With power/input mode indicators to clearly show the working status in real time, very suitable for home and desktop audio system use. Warm tips: 1. A9 is a tube preamp which needs to work with amplifiers or active speakers, cannot drive passive speakers or used with turntables directly. And the previous / next song function is invalid in U-disk input mode. 2. The USB interface only supports U-disk, not support PC-USB. And the RCA and 3.5mm headphone jack can output at the same time. Parameters Audio input: Bluetooth / U-disk / Stereo RCA Audio output: stereo RCA / 3.5mm headphone jack Bluetooth version: 5.0 U-disk supported formats: MP3 / WMA / APE / FLAC / WAV etc. U-disk max capacity: 32G Frequency response: 20Hz-20KHz(±3dB) SNR: ≥110dB (input RCA) THD: 0.05% Input sensitivity: 0.775V Output level (RCA): 1.4Vrms Treble & bass gain: ±6dB Max headphone output power: 100mW(32Ω) Matched headphone impedance: 16-300Ω Dimensions(W*D*H): 140*130*31mm / 5.51*5.12*1.22in Package dimensions(W*D*H): 320mm*220*80mm / 12.60*8.66*3.15in Net weight: 420g / 0.93lb Package weight: 700g / 1.54lb Packing List 1 x A9 Preamp 2 x 6K4 Tube 1 x 12V Power Adaptor 1 x Bluetooth Antenna Payment 1.We accept PayPal only. 2.All major credit cards are accepted through secure payment processor PayPal. 3.Payment must be received within 7 business days of auction closing. 4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. Shipping 1.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. 2.Items will be shipped within 1-3 business day when we received payment. 3.Delivery time depends on destination and other factors; 4.International buyers please note: a.Import duties, taxes and charges are not included in the item price or shipping charges. These charges are buyer’s responsibility. We will try our best to reduce the risk of the custom duties. b.Please check with your country's customs office to determine what these additional costs will be prior to buying. 's customs office to determine what these additional costs will be prior to buying. Returns policy 1.If the item is not as described or damaged in transportation, please send it back within 7 days upon date of receipt 2.For defective item, we guarantee free exchange or full refund within 30 days from the day of placing order 3.Buyers pay shipping fees at their own cost to return products for exchange or refund. We will be responsible for the postage of replacements 4.Items must be unused, in original packaging and include all parts, accessories and packaging 5.When we receive your returned item, we will investigate the situation and consider to offer replacement or refund according to the situation Terms of sales 1. All the items will be tested before shipping. Buy them with the confidence! 2. We maintain hightest buyer ratings StarStarStarStarStar and 100% customer satisfaction, Positive Feedback will be much appreciated from you. 3. Any dissatisfaction or problem, please contact us before you leave neutral Neutral feedback rating or negative Negative feedback rating feedback. Feedback 1.When you received package and like it, kindly comfirm received order and leave a positive feedback with full stars for us. Thank you. 2.Any dissatisfaction or problem, please contact us before you leave neutral Neutral feedback rating or negative Negative feedback rating feedback.