Topping
DX3 Pro+
interface_dac
$199
Used market: $120*
Specifications
4 of 10 values have a recorded source- Type
- DAC/Amp Combo·
- Bus Powered
- no·
- Max Gain dB
- 0·
- Analog Inputs
- ·
- Analog Outputs
- 3.5mm Headphones, RCA Line Out·
- Digital Inputs
- USB-B, Optical SPDIF, Coaxial SPDIF x2, Bluetooth·
- Min Usb Power W
- 0·
- Headphone Output
- Max Power mW: 1800 · Max Voltage Vrms: 7.6 · At Impedance ohms: 32 · Output Impedance ohms: 0.1·
- Max Sample Rate kHz
- 768·
- Phantom Power Provided
- no·
Expert Audio Engineering Commentary
Headroom Notes
The manual's two headphone numbers do not agree: output level is given as 21.5 Vpp at high gain, which is 7.6 Vrms, while the 250 mW at 300 ohms rating implies 8.66 Vrms. The lower of the two is recorded. Topping's '6.0 dB / 19 dB gain' is measured from digital full scale to the headphone jack, not an analogue input gain — there is no analogue input on this device at all.
* Estimated with the depreciation fallback (~60% retained value). · checked on 8/5/2026