Short answer: the Topping A30 Pro on measured measured performance, the Topping L50 on price. The Topping A30 Pro ranks #1 of 19 headphone amplifiers, rated 4.8/5, at $349.99. The Topping L50 ranks #8, rated 4.7/5, at $169, $180.99 cheaper.
The case for the Topping A30 Pro: Audio Science Review measured 121 dB SINAD, so its noise and distortion are inaudible. Watch for: It is an analog only amp with no USB or other digital input, so you need a separate DAC.
The case for the Topping L50: Audio Science Review measured a SINAD of 121 dB, so the amp adds no audible noise or distortion. The tradeoff: It has no DAC, so it needs a separate source with line outputs.
Buy the Topping A30 Pro if measured performance matters more than the price. Buy the Topping L50 if the price matters more than measured performance.
Still deciding? The full Headphone Amps and DACs rankings cover every ranked option.
Specifications Side By Side
| Topping A30 Pro | Topping L50 | |
|---|---|---|
| Price | $349.99 | $169.00 |
| Ranked | #1 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) | 5,500 mW (manufacturer rated) | 2,800 mW (manufacturer rated) |
| Output Power (300 ohms) | 840 mW (manufacturer rated) | 540 mW (manufacturer rated) |
| Headphone Outputs | 6.35 mm, 4-pin XLR, 4.4 mm | 6.35 mm, 4-pin XLR |
| Balanced Output | Yes (4-pin XLR, 4.4 mm) | - |
| Inputs | RCA, XLR | RCA, 6.35 mm TRS balanced |
| Outputs | RCA pass-through, 6.35 mm TRS pass-through | RCA, 6.35 mm TRS (input passthrough, active only when the amp is off) |
| Volume Control | Hardware knob | Hardware knob |
| Dimensions | 6.9” x 1.8” x 5.4” (174 x 45 x 138 mm) | 6.5” x 1.6” x 5.1” (166 x 41 x 129 mm) |
| Weight | 1.9 lbs (870 g) | 1.2 lbs (545 g) |
Related Amp and DAC Comparisons
More worthwhile head-to-heads for Topping A30 Pro:
- Topping A30 Pro vs Topping A50 III
- Topping A30 Pro vs Topping A70 Pro
- Topping A30 Pro vs Topping A90 Discrete
- Schiit Midgard vs Topping A30 Pro
- SMSL VMV P2 vs Topping A30 Pro
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 A30 Pro: $349.99 HiFiGo eBay
Pros: Audio Science Review measured 121 dB SINAD, so its noise and distortion are inaudible. Topping rates it at 5,500 mW into 32 ohms and 840 mW into 300 ohms, enough power for nearly any headphone, with 6.35 mm, 4-pin XLR and 4.4 mm balanced outputs plus RCA and XLR inputs. Pass-through outputs let it sit in a chain ahead of speakers.
Cons: It is an analog only amp with no USB or other digital input, so you need a separate DAC. The Topping A50 III rates the same with the same measured SINAD for less.
Full Topping A30 Pro review and specifications →
| Balanced Output | Yes (4-pin XLR, 4.4 mm) |
|---|---|
| Device Type | Headphone amp |
| Dimensions | 6.9” x 1.8” x 5.4” (174 x 45 x 138 mm) |
| Headphone Outputs | 6.35 mm, 4-pin XLR, 4.4 mm |
| Inputs | RCA, XLR |
| Output Power (300 ohms) | 840 mW (manufacturer rated) |
| Output Power (32 ohms) | 5,500 mW (manufacturer rated) |
| Outputs | RCA pass-through, 6.35 mm TRS pass-through |
| SINAD | 121 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 1.9 lbs (870 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Topping A30 Pro vs Topping A50 III
- Topping A30 Pro vs Topping A70 Pro
- Topping A30 Pro vs Topping A90 Discrete
- Topping A30 Pro vs Schiit Midgard
- Topping A30 Pro vs SMSL VMV P2
- Topping A30 Pro vs Topping L30
- Topping A30 Pro vs JDS Labs Atom Amp 2
- Topping A30 Pro vs Tom Christiansen Audio HPA-1
- See all 10 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