iFi GO bar Amplifier
World’s most powerful headphone USB DAC of its size
The GO bar is iFi's top-of-the-line ultra-portable USB DAC/headphone amplifier.
Whether you are commuting, working remotely or at your desk or simply travelling for pleasure, the GO bar is the perfectly portable way to make headphones sound heavenly.
Connect to your laptop, MacBook, tablet or smartphone or any other digital device with a USB port for sensational sound at home, in the office, or on the move.
Accessories include a leather travel case and a Lightening to USB-C, no need to buy a Camera Connection Kit, plus a USB-C OTG cable and a USB-C to USB-A adapter.
The DAC section of the GO bar uses a powerful 16-core XMOS micro controller to process the audio data received at the USB input. The iFi team has programmed the XMOS firmware to optimize sound quality and ensure a perfect partnership with the GO bar‘s 32-bit Cirrus Logic DAC chipset.
A customized digital filter minimizes pre-echoes and ringing artefacts.
Despite its diminutive size, the GO bar’s analogue circuitry sports a balanced circuit design with symmetrical twin-channel output stage. This reduces noise and crosstalk in the signal path by fully separating the left and right channels. This is usually found in larger and more expensive amplifiers.
The circuitry is packed full of high quality discrete components and special attention has been paid to power supply filtering too, dramatically reducing signal noise introduced through the USB input.
No headphone amp of such a diminutive size can match the GO bar’s ability to drive tricky headphone loads or work with a wider variety of headphones.
What's in the box?
- GO bar
- USB-C / USB-C cable
- Lightning / USB-C cable
- Adapter USB-A M / USB-C F
- Leather travel case

Technical information
- Input: USB C
- Formats:
PCM: 44.1/48/88.2/96/176.4/192/352.8/384kHz
DSD: 2.8/3.1/5.6/6.1/11.3/12.3MHz
DXD: 352.8/384kHz
MQA: Full Decoder
DAC: Bit-Perfect DSD & DXD DAC by Cirrus Logic - Headphone Output: BAL 4.4mm / UnBAL 3.5mm
- Power Output:
Balanced: 475mW @ 32Ω; 7.2V @ 600Ω
UnBAL: 300mW @ 32Ω; 3.8V @ 600Ω - Output Impedance: <1Ω (BAL/UnBAL)*
- SNR: 132dBA / 108dBA (BAL/UnBAL)
- DNR: 109dB(A) / 108dB(A) (BAL/UnBAL
- THD + N:
Balanced: <0.002% (6.5mW/2.0V @ 600Ω)
UnBAL: <0.09% (100mW/1.27V @ 16Ω) - Frequency Response: 20Hz - 45kHz (-3dB)
- Power Consumption: <4W max.
- Dimensions: 65 x 22 x 13.2 mm
- Weight: 28.5 g
iFi GO bar - Introducing
iFi GO bar - Quick Setup Guide