iFi iDSD GR 2 MT and Chord Mojo 2 Comparison Review

by Ryan Gannon

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iFi iDSD GR 2 and Chord Mojo 2 Title Card

As portable DAC/Amplifiers go, few names ring as loudly as the ever enduring Chord Mojo 2. Its compact build and staggering power have made it the go-to device for many years, even receiving a recent revision with USB-C charging and a 4.4mm jack. A few months ago, fellow UK company iFi released the iDSD GR 2 as a worthy competitor with onboard Bluetooth and smart tech capabilities. iFi then doubled down on this design with the brand new iDSD GR 2 MT, collaborating with Grammy and Brit-Award winning producer Steve Levine to better hone its sound potential. Where the original GR 2 had an edge as a more affordable option, the GR 2 MT now boasts a higher price than the Mojo 2. Are these new improvements enough to give the GR 2 MT a definitive leg up?

WHAT COMES IN THE BOX

iFi iDSD GR 2 MT: $699

  • 1x iDSD GR 2 MT
  • 1x Steve Levine Signature Card
  • 1x Type A to Type C Cable
  • 1x Type C to Type C Cable
  • 1x Microfibre protective bag
  • 1x User Manual

Chord Mojo 2: $650

  • Chord MOJO 2 Amplifier
  • Micro-USB Charging cable

DESIGN & BUILD QUALITY

These black rectangles may appear similar on the surface, but they carry significant aesthetic differences. With its colored sphere controls and wistful font, the Mojo 2’s presentation is a lot more whimsical. It also carries a smooth, reserved black finish, cleverly drawing more attention to its standout control scheme. The GR 2 MT opts for a far more industrial design, with angular UI fonts and a sleek ribbed shell to illustrate a serious product. Speaking of the GR 2 MT's shell, it feels denser and sturdier than the Mojo 2, at the expense of some extra weight.

As was true with the original model, the GR 2 MT is notably larger than the Mojo 2. As portability goes, this might be a preemptive death sentence for the GR 2 MT. However, the GR 2 MT grants users access to Bluetooth listening with aptX Lossless and LDAC codecs, keeping it competitive for on-the-go listening. The Mojo 2 can do Bluetooth using the Poly peripheral, but that comes with the inconvenience of buying and managing additional hardware, whilst increasing its size to a comparable length. 

While certainly novel in a vacuum, having the Mojo 2’s entire control setup handled by four color-changing buttons is a bit unintuitive if you attempt to use its other features. With a screenshot of the manual on hand, it is certainly manageable, but the UI on the GR 2 MT is far more legible. Using self-explanatory pictures with additional text for more specific features make its diverse toolbox more inviting out of the box. Having a volume dial with numbered levels is also more user-friendly than the color levels of the Mojo 2.

EXTRA FEATURES

Alongside analog conversion and amplified sound, each DAC/Amp has additional tricks to customize their respective sounds. The GR 2 MT is significantly more robust in this regard, offering a wide array of iFi’s typical tricks alongside aforementioned Bluetooth capabilities. These include their “XBassII” and “XSpace” modifiers, gain and input modes, and two Steve Levine signature filters. Users also gain access to the iFi Nexis application, providing further controls and firmware updates to the GR 2 MT. 

Even if comparatively lacking, the Mojo 2 still has a few unique features that keep it competitive. Most notable for the sake of comparison are the dedicated EQ settings. While certainly not universal in range, it provides modification to more frequencies than the GR 2 MT's modifiers. Specifically, you receive adjustment capabilities at 20 Hz, 125 Hz, 3 kHz, and 20 kHz. As I mentioned previously, however, putting this larger EQ behind four color-changing control buttons makes it a bit less intuitive than your standard band slider.

PHOTO GALLERY

iFi iDSD GR 2 MT and Chord Mojo 2, standing
iFi iDSD GR 2 MT and Chord Mojo 2, stacked
iFi iDSD GR 2 MT and Chord Mojo 2, side by side

PROVIDED TECHNICAL SPECIFICATIONS

iFi iDSD GR 2 MT:

  • Analog Inputs: Balanced 4.4mm / Single-Ended 3.5mm
  • Analog Outputs: Balanced 4.4mm / Single-Ended 3.5mm
  • Battery: Lithium-Polymer 4,900mAh; ~7hr battery life
  • Bluetooth Codecs: aptX Lossless, aptX Adaptive, aptX, LDAC, LHDC/HWA, AAC, SBC
  • Chipset: Burr-Brown PCM1795
  • Digital Inputs: USB-C / Bluetooth 5.4
  • Dimensions: 141 x 75 x 19mm (5.55 x 2.95 x 0.75")
  • Net Weight: 268g (0.59lbs)
  • Headphone Output: Balanced 4.4mm / Single-Ended 3.5mm
  • Hi-Res Support: PCM 768kHz; DSD512
  • Output Impedance:
    • ≤0.4Ω; ≤4.5Ω with iEMatch (Bal)
    • ≤0.2Ω; ≤4.4Ω with iEMatch (S-Bal)
  • RMS Output Power:
    • 6.94V/1,513mW @ 32Ω; 8.60V/119mW @ 600Ω (Bal)
    • 4.26V/567mW @ 32Ω; 4.27V/30mW @ 600Ω (S-Bal)
  • THD+N:
    • 0.006% @ 16Ω (headphone outputs)
    • 0.0005% @ 0dBFS (line outputs)
  • SNR DNR: 115dBA (all outputs)
  • Power Supply Requirement: 5V/>1.8A via USB-C; ~3.5h charging time

Chord Mojo 2:

  • Five Digital Inputs:
    • Coaxial
    • Dual-data Coax
    • Optical
    • Micro-USB
    • USB-C
  • Dynamic Range: 125.7 dB A wt.
  • Noise: 2.7 uV A wt., no measurable noise floor modulation
  • Distortion & Noise: 0.00027 % at 2.5 V 300 ohms
  • Power Output 1% distortion:
    • 90 mW 300 ohms (5.2 V RMS)
    • 600 mW 30 ohms (4.2 V RMS)
  • Output Impedance: 0.06 Ω
  • 118 dB Stereo Separation 1 kHz 300 ohms 2.5 V

LISTENING REVIEW

Pushing a variety of headphones through these DAC/Amps displayed different advantages for each. Starting with a reference staple, the Sennheiser HD 600, the Mojo 2 quickly established its most notable strength: sheer power. With significantly ample headroom to spare, the Mojo 2 pushes this typically demanding headphone to a bigger and broader scale, providing exciting energy to the 600’s more neutral sound. The GR 2 MT might have required a bit more volume, but certainly had enough for the 600. Where the GR 2 MT really shone through was in its warm tonality, taking full advantage of its updated tuning for a comforting listening experience. While the GR 2 MT moves the headphone towards the direction of what I like personally, the Mojo 2 was truer to the 600 signature with a uniform quality enhancement.

Switching to the new Audio-Technica ATH-AWX7000, I found the GR 2 MT’s variety of modifiers made my closed-back listening experience far more engaging. Predominantly, getting XSpace to open up the soundstage naturally lifted the closed sound. Its warmer amplifier sound also complimented the AWX7000’s tuning for further upper bass and lower mid dynamics. As was true with the HD 600, The Mojo 2’s sound provides an all-encompassing drive to the AWX7000, with more noticeable impact throughout the signature. I find these headphones work well replicating technical bass performances from bands like Primus or Tool, so having that speedy but resonant punch with the Mojo 2 was certainly a treat. While the GR 2 MT’s tuning does also play into the AWX7000’s strengths, it also takes steps to go beyond the headphones' closed back design, making it inviting for those typically hesitant on these models.

Finishing with the Abyss Diana MRx solidified what I previously discovered with the HD 600 and AWX7000. The GR 2 MT added some warm flavor to its reference bass sound, pulling our more tone from this already incredible headphone. While I found the XSpace a bit less natural on the MRx’s already massive soundstage, experimenting with the two levels of XBass put some meaty weight behind its reference low-end detail. Serving as an overall powerhouse, the Mojo 2 brings up the bass by heightening what is already there, whilst opening for more control with its dedicated EQ. 


FINAL THOUGHTS: GR 2 MT or Mojo 2?

The GR 2 MT and Mojo 2 carve distinct but dominating lanes in the path of portable DAC/Amplifiers. As their contrasting design philosophies are suitable for different on-the-go device experiences, deciding between the GR 2 MT and Mojo 2 depends on which kind you prefer.

Through its utility belt of features, connection opportunities, and analog tonality, the GR 2 MT pushes its predecessor to a noticeable premium. The GR 2 MT is a far more robust product for listeners looking for varieties of ways to listen, especially when moving around without their home setup. While the GR 2 MT lacks a dedicated EQ, this is far more easily substituted than its unique filters and modifiers would be for the Mojo 2.

As an overarching enhancer, the Mojo 2 remains one of the powerhouses of its class. Boasting staggering power and polished sound, the Mojo 2 grants room to better experience headphones in their standard tunings. If you are unimpressed by the GR 2 MT's modifiers and exclusively desire a wired experience, I find few options better than the Mojo 2.

The iFi iDSD GR 2 MT and Chord Mojo 2 are both available at Audio46.

QUICK SUMMARY

The GR 2 MT presents plenty of options to listen. Whether it be through wired and wireless inputs or audio filters and modifications, the GR 2 MT's listening experience flexes portable variety for audiophiles away from their collection.

The Mojo 2 excels in clarity and raw power. Where the GR 2 MT had a more defined warm tone, the Mojo 2 looks to expand the headphone's natural sound with broader scale and detail.

Do you want a jack of all portable trades or a master of one?

OTHER COMPARISON REVIEWS

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