Short answer: the Little Labs Monotor. It ranks #14 of 19 headphone amplifiers by measured performance, rated 3.6/5, at $580; the Rupert Neve Designs RNHP ranks #15, rated 3.2/5, and costs $699, so there is little reason to consider the other one.
The Little Labs Monotor is the better-sounding option. Audio Science Review measured a SINAD of 109 dB, clean for nearly all listening. The catch: Little Labs doesn’t publish a power figure into 32 ohms, and there are no balanced headphone outputs.
What the Rupert Neve Designs RNHP does well: Audio Science Review measured a SINAD of 101 dB, clean enough for nearly all listening. Watch for: Rupert Neve Designs does not publish a power figure into 32 ohms, so its ability to drive demanding headphones is unknown.
Buy the Little Labs Monotor. It is rated higher than the Rupert Neve Designs RNHP and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full Headphone Amps and DACs rankings.
Specifications Side By Side
| Little Labs Monotor | Rupert Neve Designs RNHP | |
|---|---|---|
| Price | $580.00 | $699.00 |
| Ranked | #14 of 19 in Headphone Amplifiers | #15 of 19 in Headphone Amplifiers |
| Device Type | Headphone amp | Headphone amp |
| SINAD | 109 dB (measured by Audio Science Review) | 101 dB (measured by Audio Science Review) |
| Headphone Outputs | 2 x 6.35 mm, 2 x 3.5 mm | - |
| Balanced Output | No | - |
| Inputs | XLR/TRS combo, TRS, 3.5 mm aux | XLR/TRS combo, RCA, 3.5 mm |
| Volume Control | Stepped attenuator knob | Hardware knob |
| Dimensions | - | 6.5” x 1.9” x 4.6” (165 x 48 x 117 mm) |
| Weight | - | 2 lbs (900 g) |
Related Amp and DAC Comparisons
How Little Labs Monotor compares with other leading options:
- Topping A70 Pro vs Little Labs Monotor
- Topping A90 Discrete vs Little Labs Monotor
- Tom Christiansen Audio HPA-1 vs Little Labs Monotor
- Soncoz SGA1 vs Little Labs Monotor
- Benchmark HPA4 vs Little Labs Monotor
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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The Two Amps and DACs In Full
Little Labs Monotor: $580.00 Sweetwater eBay
Pros: Audio Science Review measured a SINAD of 109 dB, clean for nearly all listening. It has two 6.35 mm and two 3.5 mm headphone outputs, XLR/TRS combo, TRS and 3.5 mm inputs, and a stepped attenuator for precise volume matching.
Cons: Little Labs doesn’t publish a power figure into 32 ohms, and there are no balanced headphone outputs. The JDS Labs Atom Amp 2 rates higher, measured cleaner and is rated at 2,650 mW into 32 ohms for far less.
Full Little Labs Monotor review and specifications →
| Balanced Output | No |
|---|---|
| Device Type | Headphone amp |
| Headphone Outputs | 2 x 6.35 mm, 2 x 3.5 mm |
| Inputs | XLR/TRS combo, TRS, 3.5 mm aux |
| SINAD | 109 dB (measured by Audio Science Review) |
| Volume Control | Stepped attenuator knob |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Little Labs Monotor vs Benchmark HPA4
- Little Labs Monotor vs Chord Alto
- Little Labs Monotor vs Soncoz SGA1
- Little Labs Monotor vs Fosi Audio SK01
- Little Labs Monotor vs HeadAmp Gilmore Lite Mk2
- Little Labs Monotor vs Tom Christiansen Audio HPA-1
- Little Labs Monotor vs Topping A90 Discrete
- Little Labs Monotor vs Topping A70 Pro
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 Fosi Audio SK01
- 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