Short answer: the Fosi Audio SK01. Both are rated 3.2/5 (#17 and #15 of 19 headphone amplifiers), and the Fosi Audio SK01 costs $79.99 against $699 for the Rupert Neve Designs RNHP, and with measured performance even, the cheaper one is the better buy.
The case for the Fosi Audio SK01: 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. The tradeoff: 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.
The case for the Rupert Neve Designs RNHP: Audio Science Review measured a SINAD of 101 dB, clean enough for nearly all listening. The catch: Rupert Neve Designs does not publish a power figure into 32 ohms, so its ability to drive demanding headphones is unknown.
Buy the Fosi Audio SK01. Both are rated the same, and it costs $619.01 less than the Rupert Neve Designs RNHP.
Want more options? Browse the full Headphone Amps and DACs rankings.
Specifications Side By Side
| Fosi Audio SK01 | Rupert Neve Designs RNHP | |
|---|---|---|
| Price | $79.99 | $699.00 |
| Ranked | #17 of 19 in Headphone Amplifiers | #15 of 19 in Headphone Amplifiers |
| Device Type | Headphone amp | Headphone amp |
| SINAD | 85 dB (measured by Audio Science Review) | 101 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 2,400 mW (manufacturer rated) | - |
| Headphone Outputs | 3.5 mm, 6.35 mm | - |
| Balanced Output | No | - |
| Inputs | 3.5 mm analog | XLR/TRS combo, RCA, 3.5 mm |
| Outputs | 3.5 mm line out | - |
| Equalizer | Yes (bass, mid, treble tone controls) | - |
| Dimensions | 4.8” x 2” x 1.7” (121 x 51 x 43 mm) | 6.5” x 1.9” x 4.6” (165 x 48 x 117 mm) |
| Weight | 0.6 lbs (290 g) | 2 lbs (900 g) |
| Volume Control | - | Hardware knob |
Related Amp and DAC Comparisons
More worthwhile head-to-heads for Rupert Neve Designs RNHP:
- Topping A70 Pro vs Rupert Neve Designs RNHP
- Topping A90 Discrete vs Rupert Neve Designs RNHP
- Tom Christiansen Audio HPA-1 vs Rupert Neve Designs RNHP
- Soncoz SGA1 vs Rupert Neve Designs RNHP
- Little Labs Monotor vs Rupert Neve Designs RNHP
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Amps and DACs In Full
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.
Full Fosi Audio SK01 review and specifications →
| 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) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Rupert Neve Designs RNHP: $699.00 Amazon eBay
Pros: Audio Science Review measured a SINAD of 101 dB, clean enough for nearly all listening. It accepts an XLR/TRS combo input, RCA and 3.5 mm sources, making it easy to connect studio or home gear.
Cons: Rupert Neve Designs does not publish a power figure into 32 ohms, so its ability to drive demanding headphones is unknown. There is no balanced headphone output listed. The Topping L50 rates much higher, measures cleaner and is rated for 2,800 mW into 32 ohms for far less.
Full Rupert Neve Designs RNHP review and specifications →
| Device Type | Headphone amp |
|---|---|
| Dimensions | 6.5” x 1.9” x 4.6” (165 x 48 x 117 mm) |
| Inputs | XLR/TRS combo, RCA, 3.5 mm |
| SINAD | 101 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 2 lbs (900 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Rupert Neve Designs RNHP vs Chord Alto
- Rupert Neve Designs RNHP vs Little Labs Monotor
- Rupert Neve Designs RNHP vs HeadAmp Gilmore Lite Mk2
- Rupert Neve Designs RNHP vs Soncoz SGA1
- Rupert Neve Designs RNHP vs Tom Christiansen Audio HPA-1
- Rupert Neve Designs RNHP vs Topping A90 Discrete
- Rupert Neve Designs RNHP vs Topping A70 Pro