Chord Electronics MOJO 2 Portable DAC/Headphone Amplifier (B-Stock, Factory Refurbished) [Grade A, Full Warranty]

4.4mm Revision

The crucial upgrade for the British-built Mojo 2 sees one of the two original 3.5 mm outputs replaced by the 4.4 mm socket. The improvement opens up the Mojo 2 to a far greater range of high-performance headphones, while retaining a convenient 3.5 mm connection. In addition, both the 3.5 mm and 4.4 mm outputs have independent volume memory, giving the ability to precisely set output levels for different headphones.

Chord Electronics has further upgraded the Mojo 2 with the addition of switchable USB-C charging, simplifying the Mojo 2’s charging operation; the device’s existing USB-C input is now enabled for both data and charging.

Changes from the Original

• Replaces one 3.5 mm socket, for greater compatibility with a wider range of high-end headphones
• Now supports switchable USB-C charging using the USB-C data input, simplifying connectivity and power management within a single standard

DAC and headphone amplifier in one

The British designed, engineered and built Mojo 2 is the most advanced portable DAC and headphone amplifier in the world.

Distinctly different from all other devices, the What Hi-Fi? Product of the Year-winning Mojo 2 uses proprietary British digital audio technology perfected over more than two decades, coupled to a powerful ‘FPGA’ processor.

The result is class-leading sound quality both on the move or at home, with the power to effortlessly drive any headphones. For music just as the artist intended, Mojo 2 brings you closer to the music than any other portable.

Key Features at a Glance

• Improved FPGA: more resolution, power and efficiency
• New menu function
• 'UHD' DSP: Advanced EQ
• Improved battery: FPGA-controlled management plus improved capacity
• Improved WTA filtering: 40 DSP cores for better transparency and lower noise
• High-speed USB-C input
• Two 3.5 mm headphone outputs
• Wireless-ready - simply add the Poly streamer/server
• 768kHz Micro USB Input
• Separate Micro USB Charging
• 768kHz Coax Input via Jack
• 96kHz Optical Input
• Supports 800Ω Headphones
• Supports up to 768kHz
• Up to DSD 256 (4x) Capable
• DSD via DoP
• CNC Aluminium Chassis

KEY BENEFITS

• Unrivalled digital audio processing; powerful 'FPGA' technology
• Additional USB-C data input for fast data-transfer
• Fully transparent 'Ultra HD' digital signal processing EQ, tailoring the sound to you
• Take Mojo 2 wireless when adding the Poly streamer/server (2 TB)

Proudly made in Britain from aircraft-grade aluminium. Anodised, bead-blasted, precision CNC milled. Jett black finish.

UNIQUE FPGA TECHNOLOGY

For more than 20 years, Chord Electronics has exclusively used powerful programmable (FPGA) circuits with custom coding to provide the most advanced digital-to-analogue conversion performance in the world. With digital audio technologies perfected over two decades, Mojo 2 contains more digital audio know-how than any other small DAC, resulting in unrivalled sound quality, all backed by peerless technical measurements from the lab.

Versatile Connectivity

The Mojo 2 connects effortlessly to a range of digital devices, including smartphones, tablets, and laptops. Inputs include USB-C, Micro-USB, optical, and coaxial, with a dedicated Micro-USB port for charging. Two 3.5mm headphone jacks allow for shared listening, while the colorful control spheres provide easy operation and visual feedback. The newly added menu button expands functionality, offering new features such as the transparent UHD DSP function for precise sound customization.

A: Coaxial input

B: USB-C input

C: Micro-USB input

D: Micro-USB charging input

E: Optical input

F: Charge status LED

G: Menu button (new)

HVolume down/menu '-'

I: Volume up/menu '+'

J: Power button

K: Headphone outputs (2x 3.5mm)

UHD DSP for Precision Sound Control

Mojo 2 introduces the world’s first lossless DSP, offering precise tone control across the full frequency range without any degradation in sound quality. This breakthrough technology ensures compatibility with a wide range of headphones and audio formats, delivering a perfect listening experience every time.

The custom 104-bit DSP core operates at 705/768 kHz, enabling 18 levels of adjustment per frequency band for detailed fine-tuning of bass, mid-bass, treble, and high treble.

Improved Functionality and Battery Life

The new menu system offers features like mute, four levels of crossfeed, and a button lock for travel. Volume control has also been refined, with an expanded range from +18 dB to -108 dB and two operational modes for low and high volumes.

A new FPGA-based battery system allows for faster charging, reduced power loss, and cooler operation. With an increased capacity, the Mojo 2 offers over eight hours of playback time. Its enhanced Intelligent Desktop Mode lets users bypass the battery for uninterrupted desktop use without affecting sound quality.

Superior Sound Clarity

Thanks to a digital DC servo and DC coupling, the Mojo 2 is more transparent than ever. Its improved WTA filter, with 40,960 taps and 40 DSP cores, enhances clarity and reduces noise. Additionally, an updated noise-shaper and refined 4e Pulse Array DAC improve detail retrieval while lowering distortion and out-of-band noise, creating an ultra-neutral sound profile without the use of coupling capacitors.

COMPATIBLE WITH POLY FOR STREAMING

Completely compatible with our Wireless streaming module Poly, Poly allows for wireless integration to your system.

Check out the Chord Electronics POLY v3.0+ here

In The Box

• MOJO 2
• Quick start Guide
  
• Micro-USB to USB-A cable

Specifications

• Five digital inputs: coaxial, dual-data coax, optical, Micro-USB and USB-C
• Dynamic range 125.7 dB A wt.
• Noise 2.7 uV A wt., no measurable noise floor modulation
• Distortion and 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)
• 0.06 ohms output impedance
• 118 dB stereo separation 1 kHz 300 ohms 2.5 V

FAQ

• What is the Mojo 2?
  Mojo 2 is a portable DAC (Digital-to-Analog Converter) and headphone amplifier designed and built in Britain. It uses Chord Electronics' proprietary FPGA technology to deliver high-resolution sound from smartphones, tablets, laptops, streamers, and other digital audio sources.

• What changed with the 4.4mm Mojo 2 revision?
  The updated Mojo 2 replaces one of the original two 3.5mm headphone outputs with a 4.4mm headphone output. This makes it easier to use modern headphones and IEMs with 4.4mm cables without needing an adapter, while still retaining a standard 3.5mm headphone output.

• What inputs and outputs does Mojo 2 support?
  Mojo 2 features USB-C, Micro-USB, optical, and coaxial digital inputs, along with one 3.5mm headphone output and one 4.4mm headphone output. The revised version also supports switchable USB-C charging, while the dedicated Micro-USB charging input remains available.

• Does the 4.4mm output improve sound quality?
  The main benefit of the 4.4mm output is compatibility and convenience. Many higher-end headphones and IEMs now use 4.4mm cables, so the revised Mojo 2 lets you connect them directly. The core Mojo 2 DAC and amplifier design remains focused on Chord's FPGA-based digital processing and transparent sound quality.

• Can I use both headphone outputs at the same time?
  Yes, Mojo 2 can support listening through both headphone outputs. The revised version includes one 3.5mm output and one 4.4mm output, making it more flexible for users with different headphone cable terminations.

• Does Mojo 2 remember different volume levels for each output?
  Yes, the revised Mojo 2 includes independent volume memory for the 3.5mm and 4.4mm outputs. This is useful if you switch between sensitive IEMs and harder-to-drive full-size headphones, since each output can retain its own preferred listening level.

• What makes Mojo 2 unique?
  Mojo 2 uses Chord Electronics' custom FPGA technology, developed over decades, rather than a typical off-the-shelf DAC chip. It also features UHD DSP, a lossless digital tone control system that lets you adjust the sound without the usual quality loss associated with conventional EQ.

• How does the UHD DSP function work?
  Mojo 2's UHD DSP allows precise tone control across several parts of the frequency range without degrading sound quality. It offers 18 levels of adjustment per band for bass, mid-bass, treble, and high treble, making it useful for fine-tuning different headphones or recordings.

• Can the Mojo 2 drive high-impedance headphones?
  Yes, Mojo 2 is designed to drive a wide range of headphones, including high-impedance models up to 800Ω. It offers strong output power, low noise, and a wide dynamic range for both portable and desktop listening.

• How long does the battery last?
  Mojo 2 offers over 8 hours of playback time and features an intelligent battery management system designed to reduce power loss, improve efficiency, and support desktop use without compromising sound quality.

• Is the Mojo 2 compatible with wireless streaming?
  Yes, Mojo 2 is compatible with the Chord Poly module, which adds wireless streaming, network audio playback, and microSD music library support.

• What is included in the box?
  Mojo 2 includes the DAC/headphone amplifier, a quick start guide, and a Micro-USB to USB-A cable for charging and connection.

• What devices can Mojo 2 connect to?
  Mojo 2 can connect to smartphones, tablets, laptops, streamers, and other digital audio sources using USB-C, Micro-USB, optical, or coaxial inputs. It supports high-resolution playback up to 768kHz and DSD256.

About Chord Electronics

Chord Electronics first took flight from the aviation world, where engineering without limits means uncompromising standards. This concept designed by company owner John Franks has helped shape our philosophy since the company’s inception in 1989.  Our first amplifiers were supplied to the BBC, followed by world-leading studios including Abbey Road, Sony Music (New York) and later, The Royal Opera House.

Our reputation within the professional world generated demand for a domestic range encompassing the design, engineering and build standards demanded of the finest pro equipment. Today, we apply proprietary technologies to all of our British-made products and proudly deliver studio-grade audio performance across the entire Chord range.