Short answer: the Khadas Tone2 Pro. It ranks #22 of 43 DAC and headphone amp combos by measured performance, rated 4.2/5, at $159; the Fosi Audio K7 ranks #26, rated 4.1/5, and costs $199.99, so there is little reason to consider the other one.
The case for the Khadas Tone2 Pro: Audio Science Review measured a SINAD of 118 dB, so its noise and distortion are inaudible. Watch for: Khadas rates it at 211 mW into 32 ohms on the balanced output, enough for most headphones but short of what many planar magnetic models want.
The case for the Fosi Audio K7: Audio Science Review measured a SINAD of 116 dB, so its noise and distortion are inaudible. Watch for: Fosi Audio doesn’t publish a 32 ohm power figure, so its headroom for hard to drive headphones is unclear.
Buy the Khadas Tone2 Pro. It is rated higher than the Fosi Audio K7 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Headphone Amps and DACs rankings.
Specifications Side By Side
| Khadas Tone2 Pro | Fosi Audio K7 | |
|---|---|---|
| Price | $159.00 | $199.99 |
| Ranked | #22 of 43 in DAC and Headphone Amp Combos | #26 of 43 in DAC and Headphone Amp Combos |
| Device Type | DAC and headphone amp | DAC and headphone amp |
| SINAD | 118 dB (measured by Audio Science Review) | 116 dB (measured by Audio Science Review) |
| Output Power (32 ohms) | 211 mW (manufacturer rated, balanced) | - |
| Output Power (300 ohms) | 83 mW (manufacturer rated, balanced) | - |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced | 3.5 mm, 4.4 mm balanced |
| Balanced Output | Yes (4.4 mm) | Yes (4.4 mm) |
| Inputs | USB-C, coaxial, Bluetooth (with optional BT Magic dongle) | USB-C, optical, coaxial, Bluetooth, 3.5 mm mic |
| Outputs | RCA, balanced RCA | RCA |
| DAC Chip | ES9038Q2M | AK4493SEQ |
| Volume Control | Hardware knob | Hardware knob |
| Bluetooth Codecs | - | SBC, aptX HD, aptX LL |
| Equalizer | - | Yes (bass and treble knobs) |
Related Amp and DAC Comparisons
How Khadas Tone2 Pro compares with other leading options:
- SMSL DS20 vs Khadas Tone2 Pro
- Tanchjim Luna vs Khadas Tone2 Pro
- Khadas Tone2 Pro vs SMSL D12
- Fosi Audio SK02 vs Khadas Tone2 Pro
- Khadas Tone2 Pro vs Loxjie D40
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
Khadas Tone2 Pro: $159.00 Amazon eBay
Pros: Audio Science Review measured a SINAD of 118 dB, so its noise and distortion are inaudible. It offers 3.5 mm and 4.4 mm balanced headphone outputs, RCA and balanced RCA line outputs, USB-C and coaxial inputs, and optional Bluetooth through an add-on dongle, and it rates higher than the Woo Audio WA11 Topaz for far less.
Cons: Khadas rates it at 211 mW into 32 ohms on the balanced output, enough for most headphones but short of what many planar magnetic models want. The Fosi Audio SK02 matches its rating with much more balanced power for less, and Bluetooth requires buying the separate dongle.
Full Khadas Tone2 Pro review and specifications →
| Balanced Output | Yes (4.4 mm) |
|---|---|
| DAC Chip | ES9038Q2M |
| Device Type | DAC and headphone amp |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced |
| Inputs | USB-C, coaxial, Bluetooth (with optional BT Magic dongle) |
| Output Power (300 ohms) | 83 mW (manufacturer rated, balanced) |
| Output Power (32 ohms) | 211 mW (manufacturer rated, balanced) |
| Outputs | RCA, balanced RCA |
| SINAD | 118 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Fosi Audio K7: $199.99 Amazon eBay
Pros: Audio Science Review measured a SINAD of 116 dB, so its noise and distortion are inaudible. It is unusually flexible for the money, with USB, optical, coaxial and Bluetooth inputs (SBC, aptX HD, aptX LL), RCA line out, a 4.4 mm balanced headphone jack, a microphone input and bass and treble knobs.
Cons: Fosi Audio doesn’t publish a 32 ohm power figure, so its headroom for hard to drive headphones is unclear. The SMSL DS20 rates higher for a little less, and the Fosi Audio SK02 rates slightly higher for much less. Its Bluetooth lacks AAC and LDAC.
Full Fosi Audio K7 review and specifications →
| Released | Apr 2025 (1 year ago) |
|---|---|
| Balanced Output | Yes (4.4 mm) |
| Bluetooth Codecs | SBC, aptX HD, aptX LL |
| DAC Chip | AK4493SEQ |
| Device Type | DAC and headphone amp |
| Equalizer | Yes (bass and treble knobs) |
| Headphone Outputs | 3.5 mm, 4.4 mm balanced |
| Inputs | USB-C, optical, coaxial, Bluetooth, 3.5 mm mic |
| Outputs | RCA |
| SINAD | 116 dB (measured by Audio Science Review) |
| Volume Control | Hardware knob |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons