iFi Audio GO Bar Kensei Ultra Portable DAC/Amplifier

iFi Audio GO bar Kensei

iFi audio GO bar Kensei is a premium ultra-portable USB DAC/headphone amp built for serious headphone listening anywhere you use a phone, tablet, or laptop. Crafted from Japanese stainless steel for maximum rigidity, it pairs a 32-bit Cirrus Logic DAC with a 16-core XMOS controller and precision clocking to deliver clean, low-jitter hi-res playback in a pocket-sized form factor. For sound tailoring, it combines four selectable digital filters with iFi’s all-analog XBass+ and XSpace processing—so you can add weight, space, or keep things strictly neutral depending on the track. It’s equally comfortable driving power-hungry full-size headphones or ultra-sensitive IEMs thanks to Turbo gain (+6 dB) and iEMatch, while K2HD processing (PCM up to 192kHz) can restore harmonic richness for a more “master-like” presentation.

The iFi Audio GO Bar Kensei is part of ListenUp's iFi Portable Collection.

What It's Good At:

• Restoring realism and harmonic richness to PCM music with K2HD processing (up to 192kHz PCM)
• Driving everything from sensitive IEMs to demanding over-ears with Turbo (+6 dB) and iEMatch
• Delivering powerful, low-noise output in a tiny form factor (up to 477mW balanced)
• Customizing sound instantly with four digital filters plus XBass+ and XSpace (analog)
• Keeping playback pristine with ultra-low jitter clocking and a high-performance XMOS + Cirrus DAC platform
• Reducing noise/crosstalk and expanding compatibility via 4.4mm balanced and 3.5mm S-Balanced outputs

iFi Audio GO bar Kensei Full Specifications:

• Product type: Ultra-portable USB DAC & headphone amplifier
• Chassis/material: Japanese stainless steel
• DAC chipset: 32-bit Cirrus Logic (Bit-Perfect DSD & DXD DAC)
• USB interface/controller: 16-core XMOS microcontroller
• Clocking: GMT (Global Master Timing) precision clock system (ultra-low jitter)
• K2HD Processing: Yes (effective on PCM ≤ 192kHz; not effective/available on DSD or MQA)
• Digital filters: Standard, Bit-Perfect, GTO, Minimum Phase
• Analog processing: XBass+®, XSpace (analog domain)
• Gain/drive features: iEMatch; Turbo Mode (+6dB)
• Inputs: USB-C (digital input)
• Headphone outputs:
  • 1x 4.4mm balanced
  • 1x 3.5mm S-Balanced
• Formats supported:
  • PCM: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz
  • DSD: 2.8 / 3.1 / 5.6 / 6.1 / 11.3 / 12.3 MHz (Native DSD256 up to 12.3MHz)
  • DXD: 352.8 / 384 kHz
  • MQA: Full Decoder
• Frequency response: 20Hz – 70kHz (-3dB)
• DNR: 108dB(A) / 109dB(A) (BAL / S-BAL)
• SNR: 132dB(A) / 121dB(A) (BAL / S-BAL)*
• Additional SNR listing: 114dB(A) / 114dB(A) (BAL / S-BAL)
• THD+N:
  • Balanced: ≤ 0.0025% (600Ω, 2V) @ (20–20kHz)
  • S-Bal: ≤ 0.009% (16Ω, 1.27V) @ (20–20kHz)
• Output impedance (4.4mm): < 0.62Ω
• RMS output power:
  • Balanced: 477mW @ 32Ω; 7.2V @ 600Ω
  • S-Bal: 300mW @ 32Ω; 3.8V @ 600Ω
• Power consumption: < 4W max.
• Dimensions: 65 x 22 x 13.2 mm (2.6" x 0.9" x 0.5")
• Net weight: 65.5g (2.3 oz)
• Limited warranty: 12 months
• In the box:
  • 1x GO bar Kensei
  • 1x USB-C to USB-A Adapter
  • 1x USB-C OTG Cable
  • 1x User Manual

iFi Audio GO bar Kensei Q&A:

What devices can the GO bar Kensei connect to?

It connects to smartphones, tablets, and computers via its USB-C input for plug-and-play hi-res audio.

What headphones work best with it—full-size, IEMs, or both?

Both. Turbo Mode adds +6dB for harder-to-drive headphones, while iEMatch helps tame hiss and optimize output for sensitive IEMs.

Does it support high-resolution audio formats?

Yes—PCM up to 32-bit/384kHz, Native DSD up to DSD256 (12.3MHz), DXD up to 384kHz, and full MQA decoding.

What is K2HD processing and when should it be used?

K2HD is a PCM enhancement mode designed to restore harmonics and realism; it works on PCM files up to 192kHz and is not available for DSD or MQA playback.

What are the digital filters and what do they do?

You can choose Standard, Bit-Perfect, GTO, or Minimum Phase to fine-tune transient feel, tonal character, and perceived detail depending on your music.

What do XBass+ and XSpace do?

XBass+ adds deeper, tighter low-end weight, while XSpace expands the soundstage for a more speaker-like presentation—both done in the analog domain.

What headphone outputs does it have?

It offers a 4.4mm balanced output and a 3.5mm S-Balanced output to cover balanced cables and conventional single-ended headphones.

Does it have a battery?

No—it's powered from the connected USB device, so there’s no internal battery to charge or replace.