Description

NOTE ： we don't ship the item to PO BOX address ， and we only ship the item to English address, so please leave us your physical English address when you pay. If your country is not listed in our shipping policy, pls tell us your city and zip code, we will check whether your city belong to remote area or not, then tell you the accurate freight.Tks for your understanding and coopearation. we have black and silver coor, if you do not leave a message, we will send it at random. pls know it, thanks in advance. 2021 FX-Audio TUBE-03MKII HiFi 2.0 Headphone Pre Amplifier DAC Tube 6K4/5654W Bluetooth 5.0 Bass/Treble Tuning Decoder DC12V/1A Product parameters: Model: TUBE-03MKII Tube: 6K4/5654W(Optional) Chipset: QCC3008+ESS9023+5654 +OPA1656IDR+JRC4556 Frequency Response: (±3dB)20Hz-22KHz Input: BT5.0 APTX RCA Output: RCA 3.5mm headphone amplifier SNR:100dB THD:0.001% Line Output impedance: Up to 600R Headphone output impedance:16-150R Line input impedance: 600R-20K Headphone Power output:30mW@16R，50mW@32R，70mW@68R，70mW@150R Sensitivity: 0.775Vrms RCA RMS Level： 2Vrms Bass/Treble gain: ±8dB Power supply: 12V 1A Unit Weight:0.4kg Package Weiht:0.695kg Product size:98mm*148mm*33mm Package size:260*200*67mm Color: Black/Silver This is Bluetooth Headphone amplifier.Bluetooth receiving audio signal I2S output and ES9023 dac chip can greatly improve the Bluetooth audio effect, high signal-to-noise ratio, low distortion, 3.5mm headphone amplifier interface is compatible with ordinary 3.5mm headset.Components uses JRC4556 high power output chip and buffer headphone amp circuit. Headphone Power Output: 30mW@16R, 50mW@32R, 70mW@68R, 70mW@150R. Using op chip is OPA 1656IDR and ESS9023 JRC4556.MCU intelligent control, soft switch for better switch input channel. Independent power supply design with shielded function effectively reduces interference. Relay is used to switch signal, better than normal switches. Also adopts black immersion PCB board and BC coupling capacitance Uses GE5654 vacuum tube with tube buffer circuit which has dynamic and sweet sound quality. Bass/Treble/Volume Control: It has independent bass, treble and volume control knobs, which helps you set sound effect easily according to your preference. Long press Select button to power on/off, and short press to switch signal input Shipping Policy We will send out the item within 2-3 days through DHL/EMS/FEDEX /UPS/SPEEDPAK/CHINA POST to the below countries: Belgium, Netherlands, Luxembourg, Italy, Germany, France, United Kingdom, San Marino; Austria ,Denmark ,Finland ,Greece ,Ireland ,GUERNSEY ,JERSEY ,Norway , Portugal , spain , Sweden , Switzerland; Bulgaria,Cyprus,Estonia,Latvia,Lithuania,Malta,slovakia,slovenia; Czech Republic, Hungary, Poland, Romania,. Australia ,New Zealand ,Korea South, Malaysia, Thailand, Philippines ,Singapore , Bruniei ,Taiwan , Macau, Indonesia, USA, Canada We will send tracking number to your eBay email within 1 day after sending out your item We will mark the item at the very low value, so that you do not need to pay for the tax or pay a little tax. Payment policy: We accept Paypal only. Payments must be finished within 5 working days after bid, otherwise, Unpaid Item dispute will be reported to eBay. Refund &Return policy We take all the responsibility during delivery. If you do not receive your item, we will refund you the full money or send you a new item according to your request. We can accept the return item within 60 days after the buyer receives it. Once we receive the return item, then we will refund you full money. Feedback Policy We will very appreciate you give us positive feedback (5 star) ASAP. If the item you got in any problem, PLS don’t hesitates to contact us. We will do our best to help solve the problem