The Fosi Audio SK01 ranks #17 out of 19 total Headphone Amplifiers for sound quality. See all Headphone Amps and DACs rankings for every top pick.
Brand: Fosi Audio
Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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#17 Fosi Audio SK01: $79.99 Amazon eBay
Pros: A rated 2,400 mW into 32 ohms gives plenty of drive for most headphones, including many planars, from 3.5 mm and 6.35 mm outputs. Bass, mid and treble tone controls let you adjust the balance without software. It is compact at 121 mm wide and costs little.
Cons: Audio Science Review measured a SINAD of only 85 dB, a real audible weakness that can show up as noise or hiss, especially with sensitive in-ears. It accepts only a 3.5 mm analog input, so it needs a separate source and has no balanced output. The Loxjie D30 rates higher and measures far cleaner for a little more.
| Released | Jul 2023 (3 years ago) |
|---|---|
| Balanced Output | No |
| Device Type | Headphone amp |
| Dimensions | 4.8” x 2” x 1.7” (121 x 51 x 43 mm) |
| Equalizer | Yes (bass, mid, treble tone controls) |
| Headphone Outputs | 3.5 mm, 6.35 mm |
| Inputs | 3.5 mm analog |
| Output Power (32 ohms) | 2,400 mW (manufacturer rated) |
| Outputs | 3.5 mm line out |
| SINAD | 85 dB (measured by Audio Science Review) |
| Weight | 0.6 lbs (290 g) |
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