Short answer: the Topping G5. Both are rated 4.9/5 (#7 and #2 of 43 DAC and headphone amp combos), and the Topping G5 costs $299 against $399 for the D&A Alpha, with the ratings tied, the lower price decides it.
Why pick the D&A Alpha: Audio Science Review measured 122 dB SINAD, so its noise and distortion are transparent. The catch: It is a large, heavy desktop box at 3.6 lbs (1,650 g), so it is no fit for a cramped desk or travel.
What the Topping G5 does well: Audio Science Review measured a SINAD of 120 dB, so its noise and distortion are inaudible. It supports aptX Adaptive Bluetooth, which the D&A Alpha lacks. Watch for: Its 175 mW into 300 ohms limits headroom with high-impedance headphones.
Buy the Topping G5. Both are rated the same, and it costs $100 less than the D&A Alpha.
Want more options? Browse the full Headphone Amps and DACs rankings.
Specifications Side By Side
| D&A Alpha | Topping G5 | |
|---|---|---|
| Price | $399.00 | $299.00 |
| Ranked | #2 of 43 in DAC and Headphone Amp Combos | #7 of 43 in DAC and Headphone Amp Combos |
| Device Type | DAC and headphone amp | DAC and headphone amp |
| SINAD | 122 dB (measured by Audio Science Review) | 120 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 9,000 mW (manufacturer rated, balanced) | 1,200 mW (manufacturer rated) |
| Output Power (300 ohms) | 1,100 mW (manufacturer rated, balanced) | 175 mW (manufacturer rated) |
| Headphone Outputs | 6.35 mm, 4.4 mm balanced | 3.5 mm, 4.4 mm |
| Balanced Output | Yes (4.4 mm, XLR line out) | Yes (4.4 mm) |
| Inputs | USB, optical, coaxial, Bluetooth | USB-C, Bluetooth, 3.5 mm analog |
| Outputs | RCA, XLR | - |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC | SBC, AAC, aptX, aptX LL, aptX HD, aptX Adaptive, LDAC |
| DAC Chip | 2 x ES9039Q2M | ES9068AS |
| Volume Control | Analog volume IC (NJU72315) | Hardware knob |
| Dimensions | 7.7” x 2.2” x 8.2” (195 x 55 x 208 mm) | 2.8” x 5.5” x 0.7” (70 x 140 x 18 mm) |
| Weight | 3.6 lbs (1,650 g) | 0.6 lbs (265 g) |
| Battery Life | - | 9 hours (USB), 10 hours (Bluetooth), 25 hours (analog) |
Related Amp and DAC Comparisons
More top alternatives to D&A Alpha:
- D&A Alpha vs SMSL DO400
- D&A Alpha vs SMSL RAW-MDA1
- D&A Alpha vs Topping DX5 II
- D&A Alpha vs D&A Alpha Pro
- D&A Alpha vs JDS Labs Element IV
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
D&A Alpha: $399.00 Amazon eBay
Pros: Audio Science Review measured 122 dB SINAD, so its noise and distortion are transparent. A rated 9 W balanced into 32 ohms and 1.1 W into 300 ohms is enough for nearly any headphone, planar magnetics included, and it adds optical, coaxial and LDAC Bluetooth inputs with XLR line outputs for powered speakers. It matches the rating of the SMSL DO400 for less.
Cons: It is a large, heavy desktop box at 1,650 g, so it is no fit for a cramped desk or travel. The Topping DX5 II rates the same with similarly huge balanced power for less, and the 9 W figure applies only to the 4.4 mm balanced output.
Full D&A Alpha review and specifications →
| Released | Jan 2026 (9 months ago) |
|---|---|
| Balanced Output | Yes (4.4 mm, XLR line out) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC |
| DAC Chip | 2 x ES9039Q2M |
| Device Type | DAC and headphone amp |
| Dimensions | 7.7” x 2.2” x 8.2” (195 x 55 x 208 mm) |
| Headphone Outputs | 6.35 mm, 4.4 mm balanced |
| Inputs | USB, optical, coaxial, Bluetooth |
| Output Power (300 ohms) | 1,100 mW (manufacturer rated, balanced) |
| Output Power (32 ohms) | 9,000 mW (manufacturer rated, balanced) |
| Outputs | RCA, XLR |
| SINAD | 122 dB (measured by Audio Science Review) |
| Volume Control | Analog volume IC (NJU72315) |
| Weight | 3.6 lbs (1,650 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Topping G5: $299.00 Amazon eBay
Pros: Audio Science Review measured a SINAD of 120 dB, so its noise and distortion are inaudible. A rated 1,200 mW into 32 ohms is unusual for a battery unit and handles most planars, with 3.5 mm and 4.4 mm balanced outputs. It runs about 9 hours on USB, 10 on Bluetooth with LDAC and aptX Adaptive, and 25 as an analog amp, and weighs 265 g.
Cons: Its 175 mW into 300 ohms limits headroom with high-impedance headphones. The Topping DX1 II rates the same and measures slightly cleaner for much less, though it is not portable. At 140 mm long and 18 mm thick, it suits a bag better than a pocket.
Full Topping G5 review and specifications →
| Released | Aug 2022 (4 years ago) |
|---|---|
| Balanced Output | Yes (4.4 mm) |
| Battery Life | 9 hours (USB), 10 hours (Bluetooth), 25 hours (analog) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX LL, aptX HD, aptX Adaptive, LDAC |
| DAC Chip | ES9068AS |
| Device Type | DAC and headphone amp |
| Dimensions | 2.8” x 5.5” x 0.7” (70 x 140 x 18 mm) |
| Headphone Outputs | 3.5 mm, 4.4 mm |
| Inputs | USB-C, Bluetooth, 3.5 mm analog |
| Output Power (300 ohms) | 175 mW (manufacturer rated) |
| Output Power (32 ohms) | 1,200 mW (manufacturer rated) |
| SINAD | 120 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 0.6 lbs (265 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons