M1 fever HiFi computer tube amp bile pre-stage portable headphone power amplifier


Product Description

1: Delicate high frequency and powerful low frequency. It can easily push 18-600Ω headphones, the background is quiet, and there is no current noise floor.

2: When using our amplifier, there is no current sound We use advanced microprocessor control, the relay is on and off to achieve low ground noise power supply circuit.

3: Two sets of audio signal input:
One group is USB signal input (USB-PC), which can be used directly as a computer USB external sound card.
One group is 3.5mm analog signal input. When the USB signal and 3.5mm signal are input at the same time, the 3.5mm signal input is given priority.

4: The internal materials of the product are made of fever components such as Weimar capacitors, high-precision custom crystal oscillators, potentiometers, etc., and all the materials are taken in kind.

5: The 6J9 tube and the noise-free circuit design make its sound lossless and output high-quality sound and a very powerful driving current to provide a good listening experience.


USB module chip parameter introduction:
Classic 2704 chip: support sampling rate: 16Bit-32k44.1k48k
HiFi level 7 0 2 2: 16bit. 24bit.
Sampling rate: 32khz, 44.1khz, 48kz96k

Parameter:
Output power: >=1100mW (32 ohms)
Adapted headphone impedance: 18-600 ohms
Total harmonic distortion: <0.005%
Signal to noise ratio: >=110DB
Frequency response: 20-30KH

Packaging:
1 x Headphone preampamp
1 x EUpower supply
1 xUSB cable
Q: Can I change my order info? Such as receiving address or item purchased?

A: Order info cannot be changed after being placed. Please cancel your order and place a new one if order info is incorrect. Otherwise your parcel is going to be shipped according to the initial order info.

Q: Why isn't my order being shipped out of China?

A: If there is no further tracking info after 10 days. It is most likely due to domestic shipping issue. For further support, please contact our customer service.

Q: Why is my parcel still "delivering"?

A: International shipment can be time-consuming and your patience is appreciated. Please rest assured if you see no update about your parcel. We use AliExpress shipping methods which can take 15 to 60 days. For further support, please contact our customer service.

Q: Why do I receive a different product?

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Q: Why do I receive only 1 item while several were purchased in the first place?

A: One order can possibly be shipped via several parcels with each of them a unique tracking number. Please track them according to the specific tracking number(s). Please contact our customer service directly for further support.

Q: I clicked "Confirm Goods Received" before the parcel is received. What should I do?

A: Don't worry if you clicked it by accident. Your parcel is shipped soonest possible anyway. Simply follow the tracking number for update. A 5-star review is much appreciated upon receiving your parcel.

Q: What should I do if my order is closed?

A: Please place a new order with a secure account and payment method.

Q: What if the product cannot be used?

A: Please ensure the product is used properly according to the user manual. For further support please contact our customer service directly.

Q: I haven't received my parcel yet but it shows "delivered" on the order detail page. What should I do?

A: Please check with your local post first for the parcel info. For further support, please contact our customer support.

Q: Why is my parcel returned?

A: That's because receiving address or phone number being incorrect or the logistics company cannot ship to your address. Please reach out to our customer service directly if the issue persists.