Fosi Audio SK01 Headphone Amplifier and Preamplifier User Manual
- June 12, 2024
- Fosi Audio
Table of Contents
SK01 Headphone Amplifier and Preamplifier
User Manual SKO1 User Manual
Introduction
‘Thank you for purchasing the SKO1 headphone amplifier ‘The SKO1 is a high- power headphone amplifier with tone controls (treble, middle and bass), high and low gain settings, bypass mode, and loudness function. The tone-control feature allows you to customize the sound to your preferences and compensate for any shortage in your headphones or audio system. The high and low gain settings are suitable for headphones with different impedance. The bypass mode provides a pure reproduction of the original sound. The loudness function allows you to imimerse yourself in the world of music during quiet nights.
Packing List
Product Overview
- GAIN: Initally set o high gain mode, press to switch to low gain mode
- TONE: Press to disable the treble, middle, and bass adjustment
- LOUDNESS: Enhances both treble and bass when listening at low volume
- Power indicator: Red light stays on during charging, tums off when fully charged. Green light stays on during operation with sufficient voltage. Green light flashes when battery is low
- TREBLE: Adjusts the high-frequency range at 10kHz (+8d8)
- MIDDLE: Adjusts the mid-frequency range at 1kHz (+1008)
- BASS: Adjusts the low-frequency range at 50Hz (+11dB)
- Power/Volume knob
- Signal Indicator: Light flashes in red and biue alternately when the output voltage reaches 2V, indicating the excessive volume
- 3.5mm headphone jack
- 6.35mm headphone jack
- DC 5V USB-C power input
- 3.5mm LINEIN
- 3.5mm LINE OUT
Specifications
Output Power| HIGH: RMS 2400mW@32Ω.
LOW: RMS 300mW@320
---|---
Input| 35mmlinein
Qutput| 3.5mm line out, 3.5mim headphone
jack, 6.35mm headphone jack
SNR| 10808
THD| <0.001% @ TkHz and 770mV
Noise Floor| 200
Crosstalk| 8308
Frequency Response| 20Hz-20kHz(40.0548)
Terminating Impedance| 163000
Battery Capacity| 2500mAh
Power Input Voltage| DG 5V
Operation Guide
Step 1: Connect your audio source to the Line In port of the SKO1 using a
3.5mm audio cable;
Step 2 : Plug your headphone into the corresponding headphone jack;
Step 3: Tum the power/volume knob clockwise 1o turn on the device, The
power indicator light wil lluminate;
Step4: Adjust the volume, tone, and other settings to your desired level
of comfort.
Note
Step 1 : 1f the power indicator light does not iluminate or flashes after
tuming on the device, please turn it off, connect the DC 5V USB-C port using a
USB-C cable for charging, and then tum it on again;
Step 2: If the signal indicator light is flashing, tindicates that the
volume is relatively high. It is recommended to lower the volume before
wearing headphones and then adjust it to your desired level;
Step 3: Avoid plugging or unplugging the USB cable, 3.5mm audio cable, or
headphone cable while the device is turned on;
Step 4: The USB portis for power only and does not support data transfer.
Frequently Asked Questions
If you have any further questions, please contact our support team at [email protected].
Warranty and Maintenance
Fosi Audio pledges to give a 24-month limited warranty and support from the date of purchase. If you encounter any problem when using our product, please contact our support team at [email protected].
About Us
Fosi Audio designs and builds innovative audio products with all your music in mind. Great sound, simple but elegant designs, high-quality components, and truly useful features are what Fosi Audio pursues. We sincerely hope you can get as much enjoyment from our products as weve had to create them!
Our Website:www.fosiaudio.com
Amazon
Store:‘www.amazon.com/fosiaudio
Facebook Page: Fosi Audio
Youtube Channel: Fosi Audio
Whatsapp: +86 13716612254
After-Sales Service and Technical Support Email:
[email protected]
Fosi Audio Product’s User Manual: 
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