Fosi Audio SK01 HiFi Headphone Amplifier

Battery-Powered Preamplifier and Equalizer in One Device!
  • Battery Capacity: 2500 mAh (approx. 6 hours runtime)
  • Input: 3.5 mm jack
  • Outputs: 2x headphones (3.5 & 6.5 mm jack), line out (3.5 mm jack)
  • Maximum RMS Power: 2400mw / 32 Ohm (High Gain), 300mw / 32 Ohm (Low Gain)
  • Robust and premium aluminum housing
  • Includes USB cable/adapter
89,99
All prices include VAT
Ready for shipping
Standard Shipping
free
Delivery time 1 - 2 working days
Priority Shipping
+ 0,99
Shipping on 23.04.2026
Express Shipping
+ 5,90
Delivery on Friday, 24.04.2026, if you order within  4 Hrs. 8 Min. 
Shipping and Delivery
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Fosi Headphone Amplifier and Preamplifier with Battery Power!

The Fosi Audio SK01 is a headphone amplifier with controls for treble, mids, and bass, plus buttons for high/low gain and loudness. The built-in battery has a capacity of 2500mAh, allowing for about 6 hours of operation.

The audio input is a 3.5mm jack, which also serves as the line out. The SK01 features 2 headphone outputs – both 3.5mm and 6.3mm jack.

This device is perfect as a powerful headphone amplifier, an analog preamplifier, or an equalizer where you can fine-tune your personal sound preferences.

Fosi Audio - Hear The Unheard!

Features

  • Fosi Audio HiFi Headphone Amplifier
  • Type: SK01
  • Battery Capacity: 2500 mAh (approx. 6 hours runtime)
  • Input: 3.5 mm jack
  • Outputs: 2 x headphones (3.5 & 6.5 mm jack), line out (3.5 mm jack)
  • Maximum RMS Power: 2400mw / 32 Ohm (High Gain), 300mw / 32 Ohm (Low Gain)
  • Frequency Range: 20 - 20,000 Hz (+-0.5 dB)
  • Total Harmonic Distortion: 0.001% @ 1kHz and 770mV
  • Signal-to-Noise Ratio: =108dB
  • Impedance: 16 - 300 Ohm
  • Power Supply: 5V, USB Type-C
  • Housing: Aluminum
  • Dimensions: 121 x 51 x 43 mm
  • Weight: 290 g
  • Color: Black

Scope of delivery

  • 1 x Fosi Audio SK01 HiFi Headphone Amplifier
  • 1 x 2-in-1 USB cable USB-A/C to USB-C

Specification

  • Product number 00112774
  • Colour Black

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