GO bar
interface_dac
$249
Used market: $150*
Specifications
3 of 10 values have a recorded source- Type
- Dongle Adapter·
- Bus Powered
- yes·
- Max Gain dB
- 0·
- Analog Inputs
- ·
- Analog Outputs
- 3.5mm Headphones, 4.4mm Balanced Headphones·
- Digital Inputs
- USB-C·
- Min Usb Power W
- 4✓
- Headphone Output
- Max Power mW: 300 · Max Voltage Vrms: 3.8 · At Impedance ohms: 32·
- Max Sample Rate kHz
- 384·
- Phantom Power Provided
- no·
Expert Audio Engineering Commentary
Headroom Notes
The unbalanced jack is rated 300 mW into 32 ohms and 3.8 V into 600 ohms. Those two describe different limits: 300 mW into 32 ohms is 3.1 V, so on a low-impedance load the GO bar is current-limited and gives up 1.7 dB of the voltage it can reach on a light one. The balanced jack roughly doubles both. A dongle that asks for up to 4 W will also make a phone complain long before a laptop does.
Amplification Warning
The OUTPUT IMPEDANCE row of the specification table is present but empty on the page as served, so no figure is recorded here. Note that the GO bar has an iEMatch switch precisely because its bare output impedance matters with sensitive IEMs.
What the datasheet actually says
Quoted verbatim from the manufacturer’s own page, with the date we checked it. We state what is printed, not what anyone intended by it.
«475mW max. into 32 ohms / 7.5V max. into 600 ohms»
The body of the product page states 7.5 V max. into 600 ohms; the specification table lower on the same page states Balanced: 475mW@32Ω; 7.2V@600Ω. Two different voltages for the same output on the same page, a difference of 0.35 dB. The prose also gives the balanced figure without naming the jack, while the unbalanced output is rated 300 mW and 3.8 V — half the headline.
checked 8/5/2026* Estimated with the depreciation fallback (~60% retained value). · checked on 8/5/2026