Cayin has unveiled the RU-9, a groundbreaking portable DAC/amp that integrates the Nutube 6P1 vacuum tube into a compact form factor. This innovation marks a significant milestone in the evolution of portable audio devices.

A blue-coloured case is also included with this purchase.

Specs:

• DAC Chipset: Dual AK4493SEQ DACs

• Vacuum Tube: Nutube 6P1, solid state

• Outputs: 3.5mm single-ended, 4.4mm balanced

• Inputs: USB Type-C

• Battery: Rechargeable via USB, battery life up to 4.7 hours
  

• Magnetic back design (works with Magsafe)
  
  
• Triple power supply modes
  
  
• Bluetooth version: 5.1
  
  
• Weight: 150g