Fosi Audio SK01 / Pronomic KH-900 Headphone Amplifier Set

Battery-Powered Preamplifier and Equalizer in One Unit!
  • 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: 2400 mW / 32 Ohm (High Gain), 300 mW / 32 Ohm (Low Gain)
  • Robust, High-Quality Aluminum Housing
  • Includes USB Cable/Adapter
  • Bundle including headphones
Bundle
-13% 119,90
instead of individually137,79
All prices include VAT
Ready for shipping

0% financing for 9,99 € per month
Standard Shipping
free
Delivery time 1 - 2 working days
Priority Shipping
+ 0,99
Shipping on 20.05.2026
Express Shipping
+ 5,90
Delivery on Thursday, 21.05.2026, if you order within  16 Hrs. 45 Min. 
Shipping and Delivery
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Battery-Powered Fosi Headphone Amplifier and Preamplifier!

The Fosi Audio SK01 is a headphone amplifier that gives you treble, mid and bass controls plus High/Low Gain and Loudness buttons. The built-in 2500 mAh battery delivers around 6 hours of runtime.

A 3.5 mm jack serves as the audio input and also as the line out. The SK01 is equipped with 2 headphone outputs — both 3.5 mm jack and 6.3 mm jack.

The device works great as a powerful headphone amplifier, as an analog preamplifier, or as an equalizer where you can fine-tune your personal sound.

Pronomic KH-900 Comfort Headphones

Headphones

The Pronomic KH-900 is a professional stereo headphone that pairs excellent sonic performance with top-tier wearing comfort at a pocket-friendly price. The soft, wide faux-leather headband automatically adjusts to head size for a comfortable fit. The KH-900 offers a wide frequency range from 15 to 25,000 Hz, delivering balanced, nuanced sound with brilliant, clear highs and precise, full bass. With a low impedance of just 32 Ohm, the KH-900 delivers punchy sound and plenty of headroom even from very low-power headphone outputs like MP3 players or smartphones. The 3.5 mm stereo jack ensures excellent transmission. A 6.3 mm stereo jack adapter is also included.

Fosi Audio - Hear The Unheard!

Features

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: 2400 mW / 32 Ohm (High Gain), 300 mW / 32 Ohm (Low Gain)
  • Frequency Range: 20 - 20,000 Hz (±0.5 dB)
  • Total Harmonic Distortion: 0.001% @ 1 kHz and 770 mV
  • Signal-to-Noise Ratio: =108 dB
  • Impedance: 16 - 300 Ohm
  • Power Supply: 5 V, USB Type-C
  • Housing: Aluminum
  • Dimensions: 121 x 51 x 43 mm
  • Weight: 290 g
  • Color: Black

Headphones

  • Professional headphones for studio, digital piano or e-drum
  • Drivers: ø 50 mm for high sound pressure
  • Frequency Response: 15 to 25,000 Hz
  • Sensitivity: 94 ± 3 dB
  • Nominal Impedance: 32 Ohm
  • Max. Power: 1200 mW
  • Very large, softly padded, over-ear earcups
  • Extremely comfortable to wear thanks to low clamping force
  • Automatic size adjustment to the head
  • Padding Material: Faux leather
  • Soft, wide faux-leather headband
  • Cable: 3 m with single-sided lead
  • Plug: 3.5 mm stereo jack
  • Adapter: 6.3 mm stereo jack
  • Net Weight (without cable): 215 g
  • Gross Weight: 244 g

Scope of delivery

  • 1 x Fosi Audio SK01 HiFi Headphone Amplifier
  • 1 x Headphones

Specification

  • Product number 00114641
  • Colour Black

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Financing

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You can finance your order in convenient monthly installments from a value of €100.00.
Your contact persons

The hotline is currently not manned. You can reach us again on Wednesday, 20.05.2026 at 09:30.

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