Fosi Audio SK01 Headphone Amplifier Preamp
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Fosi Audio SK01 Headphone Amplifier Preamp
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
Mon-Fri: 3:00 AM - 3:00 PM PST -
FAQ’s
If you have any questions, please refer here: FAQs
Product details
- With treble, middle, and bass adjustments capabilities, combined with central point positioning, you can easily find the perfect balance. Additionally, you can effortlessly defeat all the tone adjustments with just a click on the PURE button.
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Unmatched Headphone Compatibility: Experience versatile connectivity with the Fosi Audio SK01 Headphone Amplifier Preamplifier 2 in 1. Its input features a 3.5mm line in, while the output offers a 3.5mm line out, along with a 3.5mm/6.35mm headphone jack. Enjoy powerful performance with a max power output of RMS 2400mW@32Ω, catering to terminating impedance between 16-300Ω. Elevate your audio experience with seamless connectivity and exceptional power, all in one compact device.
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Tailor-Made Audio Experience: The SK01 is a multi-functional audio gear that caters to desktop and portable music playing and tone tuning. The tri-band adjustment allows you to personalize treble, middle, and bass, finding the perfect balance for your preferences.
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Multi-functional experience: Whether as a powerful headphone amp, a customizable analog preamp, or an accurate equalizer, it effortlessly elevates your listening experience, delivering exceptional sound quality and personalized sound signatures.
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Long-Lasting Battery: Enjoy up to 6 hours of continuous usage with the built-in high-capacity battery, while the isolated power design rejects interference, providing a pure listening experience without any interruptions.
- Exquisite Design: Crafted with an aluminum alloy body, the SK01 is both elegant in appearance and touch, adding a touch of sophistication to your desktop setup.
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What you Get: Fosi Audio Sk01 Headphone Amp x1, User Manual x1,2-in-1 USB Type-A/C to Type-C Cable x1, an 24-month worry-free warranty and friendly customer service.
Specifications
| Specifications | Details |
|---|---|
| Model | SK01 |
| Input | 3.5MM line in |
| Output | 3.5mm Headphone, 6.35mm Headphone, 3.5MM line out |
| Amp output maximum power | High Gain: RMS 2400mw/ 32Ω,Low Gain: RMS 300mw/32Ω |
| Frequency Range | 20Hz-20kHz (±0.5dB) |
| THD+N | 0.001% @ 1kHz and 770mV |
| SNR | ≥108dB |
| Headphone matching impedance | 16-300Ω |
| Device Dimension | 4.76*2*1.69inch (121*51*43mm) |
| Net Weight | 0.641b/290g |
| Power Supply | 5V, USB Type-C |
Use a 5V 1.5A/2A adapter to charge it.
What‘s in the box？
Item Quantity Fosi Audio Sk01 Headphone Amp x 1, 2-in-1 USB-A/C to C Cable x 1, User’s Manual x 1
SK01 User Manual
FAQs
Please read our FAQs page to find out more.
How to: Choose the right banana plug?
- Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
- Easy to wire up and solidly connect to amplifier and passive speaker.
- If they do not fit, use a little force to tighten the plugs.
- Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
- Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
- The following situations may cause this issue
- Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
- Possible solution
- Check if the power supply is illuminated when plugged into AC by itself.
Plug power supply into a different socket.
Test the adapter with a meter.
Try a different power supply (within a range of DC input).
Test the included power supply on other electrical equipment.
Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What are the differences in power outputs using the 32V and 48V power supplies?
- Using a more powerful power supply can help prevent distortion.
- Enables amplifier to drive larger, more powerful, or higher-impedance speakers.
What is a GaN?
- The GaN supply has a power output of 240W.
- Offers overload and over-temperature protection.
- The 48V 5A GaN power supply is also available on Amazon.