Introducing the eSMART DUO, the latest addition to our lineup of smart power distribution systems. Positioned between the eSMART BG-DH MKII and the eSMART TRIO, this ultra-compact and portable unit is designed specifically for location sound recordists who require reliable and efficient power solutions for their audio equipment.

The eSMART DUO is perfect for sound bags, offering a small footprint while delivering powerful performance. Whether you need to hot swap batteries or utilize AC power with battery backup, this unit provides the flexibility you need on set.

AUDIOROOT smart battery distribution systems, like the eSMART DUO, offer numerous advantages for location sound recordists. By utilizing smart batteries, these systems provide real-time power monitoring, precise energy management, and enhanced reliability in demanding field conditions. Features such as hot-swappable batteries, customizable input configurations, and detailed battery diagnostics ensure continuous operation, reducing downtime and improving efficiency on set. With a modular design, compact form factor, and robust construction, AUDIOROOT power solutions optimize power delivery, making them essential tools for professional audio workflows.

• 2 smart battery inputs with a modular design for seamless integration.
• 6 x Hirose™ compatible DC outputs (4 main, 2 auxiliary) on the rear panel, with one output supporting smBUS battery data aggregation.
• High-visibility 96×64 pixels color OLED display for real-time battery monitoring.
• Displays detailed battery data, including:
  • Remaining capacity (%)
  • Estimated runtime
  • Voltage, current, and power
  • Battery cycles and temperature
  • Serial number and cell voltage
• 4 selectable main display layouts (combined, individual, legacy, auto) to suit user preference.
• Configurable battery capacity alarm threshold to ensure uninterrupted power supply.
• Green LED-illuminated pushbutton for intuitive menu navigation.
• 2 locking toggle switches to control output activation.
• Micro USB port (internal) for easy firmware upgrades.
• Compatible with USB-C PD power supplies via the Audioroot ePSB USB-C to TA4 adapter (available Q3 2025).
• Compatible with all AUDIOROOT smart batteries and combiners : Li-48neo, Li-96neo, Li-49Wh, Li-98Wh, LiFE-256Wh, LiFE-576Wh, BC1150, BH2,…
• User-replaceable input connectors/cables for maintenance and configuration flexibility.
• Compact and lightweight:
  • Size: 63.5 x 32 x 80mm (without belt clip)
  • Weight: 170g (for the DUO with 2 x TA4M inputs)
  • Belt clip included for easy portability
• Made in France

AUDIOROOT provides three optional interchangeable cable harnesses, allowing users to adapt their setup:

• DUO-CAB-TT: 2 x Switchcraft-compatible TA4M connectors (8cm length) (pre-installed by default).
• DUO-CAB-CC: 2 x smart battery cups (30cm length).
• DUO-CAB-TC: Hybrid cable with 1 x TA4M connector + 1 x smart battery cup (8cm + 30cm lengths).