Short answer: the Topping A50 III. It ranks #2 of 19 headphone amplifiers by measured performance, rated 4.8/5, at $199. The Topping L50 ranks #8, rated 4.7/5, at $169, $30 cheaper, not enough of a saving to outweigh the sound-quality gap.
What the Topping A50 III does well: Audio Science Review measured a SINAD of 121 dB, so its noise and distortion are inaudible. The catch: It is an amp only, so you need a separate DAC.
Why pick the Topping L50: Audio Science Review measured a SINAD of 121 dB, so the amp adds no audible noise or distortion. The catch: It has no DAC, so it needs a separate source with line outputs.
Buy the Topping A50 III. It is rated higher, and the $30 saving on the Topping L50 is not enough to make up the difference.
Looking for alternatives? See the complete Headphone Amps and DACs rankings.
Specifications Side By Side
| Topping A50 III | Topping L50 | |
|---|---|---|
| Price | $199.00 | $169.00 |
| Ranked | #2 of 19 in Headphone Amplifiers | #8 of 19 in Headphone Amplifiers |
| Device Type | Headphone amp | Headphone amp |
| SINAD | 121 dB (measured by Audio Science Review) | 121 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 3,500 mW (manufacturer rated, balanced) | 2,800 mW (manufacturer rated) |
| Output Power (300 ohms) | 760 mW (manufacturer rated, balanced) | 540 mW (manufacturer rated) |
| Headphone Outputs | 6.35 mm, 4.4 mm balanced | 6.35 mm, 4-pin XLR |
| Balanced Output | Yes (4.4 mm) | - |
| Inputs | RCA, 6.35 mm TRS balanced | RCA, 6.35 mm TRS balanced |
| Volume Control | Hardware knob | Hardware knob |
| Dimensions | 4.9” x 1” x 5.5” (125 x 26 x 140 mm) | 6.5” x 1.6” x 5.1” (166 x 41 x 129 mm) |
| Outputs | - | RCA, 6.35 mm TRS (input passthrough, active only when the amp is off) |
| Weight | - | 1.2 lbs (545 g) |
Related Amp and DAC Comparisons
More worthwhile head-to-heads for Topping A50 III:
- Topping A30 Pro vs Topping A50 III
- Topping A50 III vs Topping A70 Pro
- Schiit Midgard vs Topping A50 III
- Topping A50 III vs Topping L30
- Topping A50 III vs JDS Labs Atom Amp 2
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
Topping A50 III: $199.00 Amazon eBay
Pros: Audio Science Review measured a SINAD of 121 dB, so its noise and distortion are inaudible. A rated 3.5 W into 32 ohms and 760 mW into 300 ohms from its balanced output is enough for nearly any headphone. It has 6.35 mm and 4.4 mm balanced outputs and costs less than the Schiit Midgard at the same rating.
Cons: It is an amp only, so you need a separate DAC. Its balanced input uses 6.35 mm TRS rather than XLR, and there are no line outputs for passing the signal on to speakers.
Full Topping A50 III review and specifications →
| Released | Mar 2024 (2 years ago) |
|---|---|
| Balanced Output | Yes (4.4 mm) |
| Device Type | Headphone amp |
| Dimensions | 4.9” x 1” x 5.5” (125 x 26 x 140 mm) |
| Headphone Outputs | 6.35 mm, 4.4 mm balanced |
| Inputs | RCA, 6.35 mm TRS balanced |
| Output Power (300 ohms) | 760 mW (manufacturer rated, balanced) |
| Output Power (32 ohms) | 3,500 mW (manufacturer rated, balanced) |
| SINAD | 121 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Topping L50: $169.00 Amazon eBay
Pros: Audio Science Review measured a SINAD of 121 dB, so the amp adds no audible noise or distortion. A rated 2,800 mW into 32 ohms and 540 mW into 300 ohms is enough for nearly any headphone, including demanding planar magnetic and high impedance models. It offers a 4-pin XLR balanced headphone output and accepts balanced 6.35 mm TRS or RCA inputs.
Cons: It has no DAC, so it needs a separate source with line outputs. The Topping A50 III rates slightly higher with more rated power for a little more, and the passthrough outputs only work while the amp is switched off.
Full Topping L50 review and specifications →
| Device Type | Headphone amp |
|---|---|
| Dimensions | 6.5” x 1.6” x 5.1” (166 x 41 x 129 mm) |
| Headphone Outputs | 6.35 mm, 4-pin XLR |
| Inputs | RCA, 6.35 mm TRS balanced |
| Output Power (300 ohms) | 540 mW (manufacturer rated) |
| Output Power (32 ohms) | 2,800 mW (manufacturer rated) |
| Outputs | RCA, 6.35 mm TRS (input passthrough, active only when the amp is off) |
| SINAD | 121 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 1.2 lbs (545 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons