Short answer: the JDS Labs Atom Amp 2. Both are rated 4.7/5 (#9 and #7 of 19 headphone amplifiers), and the JDS Labs Atom Amp 2 costs $129 against $149 for the Topping L30, and with measured performance even, the cheaper one is the better buy.
What the JDS Labs Atom Amp 2 does well: Audio Science Review measured a SINAD of 120 dB, so its noise and distortion are inaudible. Watch for: It has no DAC, so you need a separate source.
Why pick the Topping L30: Audio Science Review measured 121 dB SINAD, so its noise and distortion are inaudible. Watch for: It has only RCA analog inputs, so you need a separate DAC.
Buy the JDS Labs Atom Amp 2. Both are rated the same, and it costs $20 less than the Topping L30.
Want more options? Browse the full Headphone Amps and DACs rankings.
Specifications Side By Side
| JDS Labs Atom Amp 2 | Topping L30 | |
|---|---|---|
| Price | $129 | $149.00 |
| Ranked | #9 of 19 in Headphone Amplifiers | #7 of 19 in Headphone Amplifiers |
| Device Type | Headphone amp | Headphone amp |
| SINAD | 120 dB (measured by Audio Science Review) | 121 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 2,650 mW (manufacturer rated) | 2,300 mW (manufacturer rated) |
| Output Power (300 ohms) | 286 mW (manufacturer rated) | 280 mW (manufacturer rated) |
| Headphone Outputs | 6.35 mm, 4.4 mm | 6.35 mm |
| Inputs | RCA, 3.5 mm | RCA |
| Outputs | RCA | RCA (preamp) |
| Volume Control | Hardware knob | Hardware knob |
| Dimensions | 5.7” x 1.3” x 5.2” (145 x 34 x 131 mm) | 3.9” x 1.3” x 5.3” (100 x 32 x 134 mm) |
| Weight | 1 lbs (454 g) | - |
| Balanced Output | - | No |
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- Schiit Midgard vs Topping L30
- Topping L30 vs Topping L50
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
JDS Labs Atom Amp 2: $129 JDS Labs eBay
Pros: Audio Science Review measured a SINAD of 120 dB, so its noise and distortion are inaudible. A rated 2,650 mW into 32 ohms and 286 mW into 300 ohms drives nearly any headphone, and it offers both 6.35 mm and 4.4 mm outputs. It matches the rating of the Topping L50 for less and adds RCA preamp outputs for powered speakers.
Cons: It has no DAC, so you need a separate source. Its inputs are RCA and 3.5 mm only, with no balanced XLR input, and the Topping A50 III rates slightly higher for a bit more.
Full JDS Labs Atom Amp 2 review and specifications →
| Device Type | Headphone amp |
|---|---|
| Dimensions | 5.7” x 1.3” x 5.2” (145 x 34 x 131 mm) |
| Headphone Outputs | 6.35 mm, 4.4 mm |
| Inputs | RCA, 3.5 mm |
| Output Power (300 ohms) | 286 mW (manufacturer rated) |
| Output Power (32 ohms) | 2,650 mW (manufacturer rated) |
| Outputs | RCA |
| SINAD | 120 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 1 lbs (454 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Topping L30: $149.00 Apos Audio eBay
Pros: Audio Science Review measured 121 dB SINAD, so its noise and distortion are inaudible. A rated 2.3 W into 32 ohms and 280 mW into 300 ohms drive nearly any headphone, including planar magnetic and high impedance models. It also has RCA preamp outputs and a compact footprint.
Cons: It has only RCA analog inputs, so you need a separate DAC. There is no balanced headphone output, and the only jack is 6.35 mm. The JDS Labs Atom Amp 2 earns the same rating and publishes more power for less.
Full Topping L30 review and specifications →
| Released | Jul 2020 (6 years ago) |
|---|---|
| Balanced Output | No |
| Device Type | Headphone amp |
| Dimensions | 3.9” x 1.3” x 5.3” (100 x 32 x 134 mm) |
| Headphone Outputs | 6.35 mm |
| Inputs | RCA |
| Output Power (300 ohms) | 280 mW (manufacturer rated) |
| Output Power (32 ohms) | 2,300 mW (manufacturer rated) |
| Outputs | RCA (preamp) |
| SINAD | 121 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons