Jomo Audio Invictus Magnetic Portable DAC/Amp

ES9281AC Pro | 3.5mm + 4.4mm Balanced | MagSafe Magnetic Mount | Dedicated Power Input

The Invictus DAC/Amp is Jomo Audio's portable source built as a companion to its Invictus flagship IEM, and it works just as well with any wired headphones or IEMs you already own. It is machined from a solid block of aerospace aluminum in the same watch-inspired style as the Invictus, then packed with the features that matter on the go: a clean ESS decoding stage, both single-ended and balanced outputs, a separate power input so it does not drain your phone, and a magnetic back that snaps straight onto your iPhone.

At a Glance

•      ESS ES9281AC Pro DAC with PCM up to 32-bit/768kHz, native DSD512, and full MQA rendering
•      3.5mm single-ended and 4.4mm balanced outputs, up to 4.2 Vrms from the balanced port
•      Dual USB-C design with a dedicated power inlet for running from a power bank
•      Built-in MagSafe magnetic array that snaps onto iPhone or any MagSafe-compatible phone case
•      Solid aluminum chassis with gold-plated brass bezel and shark fin cooling fins

Clean Power for Demanding IEMs

At its core is the ESS ES9281AC Pro DAC paired with dual RT6863C amplifiers in a push-pull balanced configuration. The 4.4mm Pentaconn balanced output delivers up to 4.2 Vrms and at least 137mW into 32Ω, while the 3.5mm output provides up to 2 Vrms and at least 126mW. With 119dB SNR and THD+N of just 0.0004%, it keeps backgrounds quiet and channel separation wide, giving multi-driver IEMs like the Invictus the headroom they need without hiss.

Two USB-C Ports, Less Battery Drain

Most dongle DACs pull all their power from your phone. This one gives you a choice. The bottom USB-C port handles audio data and power in a single cable for the simplest setup, while a dedicated top-mounted USB-C inlet accepts clean 5V power from an external power bank. Plug in that second source and the DAC/Amp stops drawing from your phone, giving you longer listening time and more current for dynamic, uncompressed sound.

Snaps Right Onto Your Phone

A high-strength MagSafe-compatible magnetic array on the back lets the DAC/Amp click flat onto any MagSafe iPhone, and it is MFi certified for iPhone and iPad. Android phones are fully supported too, and attach the same way with any MagSafe-compatible case. No rubber bands, no clamps, and no dongle swinging from a cable, just one clean stack that slides into a pocket.

Built Like a Watch, Cooled Like a Machine

The chassis is milled from a solid block of aerospace aluminum on five-axis CNC machines, with sharp bevels, a gold-plated brass bezel ring, and mirror-polished exposed screws that match the Invictus IEM. Shark fin cooling fins are cut into the sides to increase surface area and carry heat away during long high-gain sessions, keeping performance stable and the unit comfortable to hold.

Specifications

• DAC Chip: ESS ES9281AC Pro
• Amplification: 2 × RT6863C, dual push-pull balanced
• Inputs: USB-C audio; dedicated top-mounted USB-C 5V power inlet
• Outputs: 3.5mm single-ended; 4.4mm Pentaconn balanced
• 3.5mm Output Power: Up to 2 Vrms; ≥126mW @ 32Ω; ≥7mW @ 600Ω
• 4.4mm Output Power: Up to 4.2 Vrms; ≥137mW @ 32Ω; ≥29mW @ 600Ω
• SNR: 119dB
• THD+N: 0.0004%
• Frequency Deviation: <0.08dB @ 40kHz
• Decoding: PCM up to 32-bit/768kHz; native DSD512; MQA full rendering
• Compatibility: MagSafe magnetic mount; MFi certified for iPhone and iPad; Android
• Origin: Designed and assembled in Singapore

What's in the Box

•      Jomo Audio Invictus Magnetic Portable DAC/Amp
•      USB-C to USB-C cable (L-shaped plug, extra short)