Short answer: the TANCHJIM Space. It ranks #5 of 14 usb-c dongle DACs by measured performance, rated 4.2/5, at $89.99. The JCALLY JM20MAX ranks #8, rated 3.8/5, at $39.99, $50 cheaper, which does not close the gap in measured performance.
The TANCHJIM Space is the better-sounding option. Audio Science Review measured 115 dB SINAD, right at the level where noise and distortion become inaudible, so this dongle is effectively transparent. The tradeoff: It rates below the FiiO KA15 for a similar price, and that rival publishes more than twice the power from its balanced output.
What the JCALLY JM20MAX does well: Audio Science Review measured 113 dB SINAD, which is clean for nearly all listening. The tradeoff: The maker doesn’t publish a 32 ohm power figure, so its ability to drive harder headphones is unknown.
Buy the TANCHJIM Space. It is rated higher, and the $50 you would save on the JCALLY JM20MAX does not close the gap.
Want more options? Browse the full Headphone Amps and DACs rankings.
Specifications Side By Side
| TANCHJIM Space | JCALLY JM20MAX | |
|---|---|---|
| Price | $89.99 | $39.99 |
| Ranked | #5 of 14 in USB-C Dongle DACs | #8 of 14 in USB-C Dongle DACs |
| Device Type | USB-C dongle | USB-C dongle |
| SINAD | 115 dB (measured by Audio Science Review) | 113 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 230 mW (manufacturer rated) | - |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced | 3.5 mm |
| Balanced Output | Yes (4.4 mm) | No |
| Inputs | USB-C | USB-C |
| DAC Chip | 2 x CS43131 | CS43131 |
| Volume Control | Digital (buttons) | - |
| Weight | - | 0 lbs (6.5 g) |
Related Amp and DAC Comparisons
How TANCHJIM Space compares with other leading options:
- FiiO KA15 vs TANCHJIM Space
- E1DA 9039S vs TANCHJIM Space
- TRN Black Pearl vs TANCHJIM Space
- Fosi Audio DS3 vs TANCHJIM Space
- TANCHJIM Space vs TempoTec Sonata BHD 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Amps and DACs In Full
TANCHJIM Space: $89.99 HiFiGo eBay
Pros: Audio Science Review measured 115 dB SINAD, right at the level where noise and distortion become inaudible, so this dongle is effectively transparent. A rated 230 mW into 32 ohms drives most headphones, and it offers both a 3.5 mm jack and a 4.4 mm balanced output with dual CS43131 DAC chips. Button volume control lets you adjust level on the dongle itself.
Cons: It rates below the FiiO KA15 for a similar price, and that rival publishes more than twice the power from its balanced output. The TRN Black Pearl rates higher and measured cleaner for much less. The 230 mW figure suits most headphones but leaves little headroom for hard to drive planar magnetic models.
Full TANCHJIM Space review and specifications →
| Balanced Output | Yes (4.4 mm) |
|---|---|
| DAC Chip | 2 x CS43131 |
| Device Type | USB-C dongle |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced |
| Inputs | USB-C |
| Output Power (32 ohms) | 230 mW (manufacturer rated) |
| SINAD | 115 dB (measured by Audio Science Review) |
| Volume Control | Digital (buttons) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JCALLY JM20MAX: $39.99 Amazon eBay
Pros: Audio Science Review measured 113 dB SINAD, which is clean for nearly all listening. At 6.5 g it is a tiny USB-C dongle that adds a 3.5 mm jack to a phone or laptop for little money.
Cons: The maker doesn’t publish a 32 ohm power figure, so its ability to drive harder headphones is unknown. There is no balanced output, and the Fosi Audio DS2 rates higher with a 4.4 mm balanced jack, while the FiiO KA11 matches its rating for less.
Full JCALLY JM20MAX review and specifications →
| Balanced Output | No |
|---|---|
| DAC Chip | CS43131 |
| Device Type | USB-C dongle |
| Headphone Outputs | 3.5 mm |
| Inputs | USB-C |
| SINAD | 113 dB (measured by Audio Science Review) |
| Weight | 0 lbs (6.5 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons