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  • HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V
  • HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V
  • HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V
  • HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V
  • HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V
  • HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V
HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V

HiFi Mini Class A 12AU7 Tube Multi-Mix Headphone Amplifier Stereo Pre-Amp Board DC24V COD

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                        - It is a Pure Class A amplifier with excellent performance desgined by Douk Audio Studio. It brings you a powerful, dynamic and sweet TUBE SOUND from your headphones.
                        - Without any OP amp or IC in this circuit, but MOSFET Class A.
                        - The vacuum tube will emit red light in operation offering you different visual effects especially at night, and its mini size, compact design and tough PCB shell make it more elegant and fashionable.
                        - 6.35mm and 3.5mm headphone output can be used at the same time. In addition, it has output mute protection, which can protect your favorite headsets.
                        -  It also can be used as a class A preamplifier with its preamp output interface.
                        - High Playability with a switch that can set it to 12 series or 6 series tube modules:
                        6 Series Available: 6DJ8/6922/6N11/E88CC/6H23...
                        12 Series Available: 12AU7/ECC8/5814/6189/B329/CV4003/ECC802S...


                        Working voltage: DC24V, 1.5A at least
                        Input sensitivity: 50mV
                        Gain: 32dB
                        Audio input: 3.5mm audio jack & Stereo L/R RCA
                        Audio output: 3.5mm headphone & 6.35mm headphone & Stereo L/R RCA
                        Input Impedance: 100KΩ
                        Output Impedance: 20Ω~600Ω
                        Frequency response: 10Hz-60KHz (±0.25dB)
                        Signal/Noise Ratio: >90dB
                        Dimension: W102× D102 × H37.5 mm (4.02 × 4.02 × 1.48 in)
                        Net Weight: 310g


                        1. We recommend to have it rest after 2-3 hours work for its large power that not suitable for a long time work.
                        2. Please keep away from some high-power sources of interference, such as monitors,audio speakers, mobile phones, WIFI and other electrical appliances.
                        3.  Power switch Reset: if power switch is locked and can not be shut OFF or turned ON, you need to reset it by the following steps: deeply press and hold the switch and then turn it to left and right for 2 or 3 times, then release it, the switch will be reset. If not, you can repeat that method for 2-3 times again.
                        4. RCA output: it will automatically switch to RCA output after 6.35 headset being pulled out.
                        5. Normal boot requires about 10 seconds then It will have a normal sound output.

                        Package Included:

                        1× Headphone Amp( assembled)
                        1× 12AU7 Tube
                        1× Power Supply

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                        Shipping method(s) Shipping time Tracking information
                        (1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.
                        (2) Business days do not include Saturday/Sunday and any public holidays.
                        (3) These estimates are based on normal circumstances and are not a guarantee of delivery times.
                        (4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.
                        (5) Expedited shipping can not be used for PO Box addresses

                        Payment methods

                        We support the following payment methods.Click for more information if you are confused about how to pay.
                        *We currently offer COD payments for Saudi Arabia, United Arab Emirates, Kuwait, Oman, Bahrain, Qatar, Thailand, Singapore, Malaysia, Philippines, Indonesia, Viet Nam, India. We will send a confirmation code to your mobile phone to verify that your contact details are correct. Please ensure you follow all the instructions contained in the message.
                        *Paying with Installment (credit card) or Boleto Bancário is only available for orders with shipping addresses in Brazil.

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