Short answer: the Loxjie D40 Pro. Both are rated 4.9/5 (#1 and #7 of 59 DAC and headphone amp combos), and the Loxjie D40 Pro costs $282.99 against $299 for the Topping DX5 II, so with nothing between them on measured performance, price settles it.
What the Loxjie D40 Pro does well: Audio Science Review measured a SINAD of 123 dB, so noise and distortion are inaudible and it is fully transparent. The catch: At 24 cm wide and 2.4 lbs (1.1 kg) it needs a good amount of desk space.
The case for the Topping DX5 II: Audio Science Review measured a SINAD of 122 dB, so its noise and distortion are inaudible. It supports aptX Adaptive Bluetooth, which the Loxjie D40 Pro lacks. The catch: The Topping DX1 II shares its rating for well under half the price and still delivers about 1 W into 32 ohms, which is plenty for most headphones.
Buy the Loxjie D40 Pro. Both are rated the same, and it costs $16.01 less than the Topping DX5 II.
Looking for alternatives? See the complete Headphone Amps and DACs rankings.
Specifications Side By Side
| Loxjie D40 Pro | Topping DX5 II | |
|---|---|---|
| Price | $282.99 | $299.00 |
| Ranked | #1 of 59 in DAC and Headphone Amp Combos | #7 of 59 in DAC and Headphone Amp Combos |
| Device Type | DAC and headphone amp | DAC and headphone amp |
| SINAD | 123 dB (measured by Audio Science Review) | 122 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 3,000 mW (manufacturer rated) | 6,400 mW (manufacturer rated, balanced) |
| Output Power (300 ohms) | 700 mW (manufacturer rated) | 990 mW (manufacturer rated, balanced) |
| Headphone Outputs | 6.35 mm, 4.4 mm balanced, 4-pin XLR balanced | 6.35 mm, 4.4 mm balanced, 4-pin XLR balanced |
| Balanced Output | Yes (4.4 mm, 4-pin XLR) | Yes (4.4 mm, 4-pin XLR, XLR line out) |
| Inputs | USB-B, optical, coaxial, AES/EBU, I2S (HDMI), Bluetooth 5.0 | USB, optical, coaxial, Bluetooth |
| Outputs | RCA, XLR | RCA, XLR |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC | SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC |
| DAC Chip | ESS ES9039MSPRO | 2 x ES9039Q2M |
| Dimensions | 9.4” x 1.7” x 7.7” (240 x 43 x 195 mm) | 7.5” x 1.7” x 6.1” (190 x 44 x 155 mm) |
| Weight | 2.4 lbs (1.1 kg) | 2.1 lbs (945 g) |
| Volume Control | - | Hardware knob |
| Equalizer | - | Yes (10-band parametric) |
Related Amp and DAC Comparisons
How Loxjie D40 Pro compares with other leading options:
- SMSL RAW-MDA1 vs Topping DX5 II
- Topping DX5 vs Topping DX5 II
- Topping DX5 II vs Topping G5
- Topping DX5 II vs Aune X1s GT
- Sabaj A20d 2023 vs Topping DX5 II
Prices on this page were last checked October 13, 2026 at 3:17 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
Loxjie D40 Pro: $282.99 Amazon $282.99 eBay
Pros: Audio Science Review measured a SINAD of 123 dB, so noise and distortion are inaudible and it is fully transparent. It is rated at 3,000 mW into 32 ohms and 700 mW into 300 ohms, enough for nearly any headphone, through 6.35 mm, 4.4 mm balanced and 4-pin XLR outputs. Inputs include USB, optical, coaxial, AES/EBU, I2S over HDMI and Bluetooth with LDAC and aptX HD, and it matches the SMSL DO400 for less.
Cons: At 24 cm wide and 1.1 kg it needs a good amount of desk space. The Sabaj A20d 2023 rates the same for less if you don’t need this much power or the XLR headphone jack.
Full Loxjie D40 Pro review and specifications →
| Released | 2023 (3 years ago) |
|---|---|
| Balanced Output | Yes (4.4 mm, 4-pin XLR) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, LDAC |
| DAC Chip | ESS ES9039MSPRO |
| Device Type | DAC and headphone amp |
| Dimensions | 9.4” x 1.7” x 7.7” (240 x 43 x 195 mm) |
| Headphone Outputs | 6.35 mm, 4.4 mm balanced, 4-pin XLR balanced |
| Inputs | USB-B, optical, coaxial, AES/EBU, I2S (HDMI), Bluetooth 5.0 |
| Output Power (300 ohms) | 700 mW (manufacturer rated) |
| Output Power (32 ohms) | 3,000 mW (manufacturer rated) |
| Outputs | RCA, XLR |
| SINAD | 123 dB (measured by Audio Science Review) |
| Weight | 2.4 lbs (1.1 kg) |
- Reviews, Comparisons and Sound Samples
Topping DX5 II: $299.00 Amazon $299.00 eBay
Older model: the Topping DX5 (ranked higher, rated 4.9/5). See every Topping DX5 generation.
Pros: Audio Science Review measured a SINAD of 122 dB, so its noise and distortion are inaudible. A rated 6.4 W into 32 ohms and 990 mW into 300 ohms is enough for nearly any headphone, through 6.35 mm, 4.4 mm and 4 pin XLR outputs. It adds a 10 band parametric EQ, Bluetooth with LDAC and aptX Adaptive, and RCA and XLR line outputs, matching the rating of the SMSL DO400 for less.
Cons: The Topping DX1 II shares its rating for well under half the price and still delivers about 1 W into 32 ohms, which is plenty for most headphones. Its full size chassis takes more desk space than compact all in ones.
Full Topping DX5 II review and specifications →
| Released | Jun 2025 (1 year ago) |
|---|---|
| Balanced Output | Yes (4.4 mm, 4-pin XLR, XLR line out) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC |
| DAC Chip | 2 x ES9039Q2M |
| Device Type | DAC and headphone amp |
| Dimensions | 7.5” x 1.7” x 6.1” (190 x 44 x 155 mm) |
| Equalizer | Yes (10-band parametric) |
| Headphone Outputs | 6.35 mm, 4.4 mm balanced, 4-pin XLR balanced |
| Inputs | USB, optical, coaxial, Bluetooth |
| Output Power (300 ohms) | 990 mW (manufacturer rated, balanced) |
| Output Power (32 ohms) | 6,400 mW (manufacturer rated, balanced) |
| Outputs | RCA, XLR |
| SINAD | 122 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
| Weight | 2.1 lbs (945 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons