Product Overview

The Boss 2 DAC is the upgraded successor to the legendary Boss DAC—one of the most successful DACs ever designed for Raspberry Pi. After three years of refinement, the Boss 2 delivers improved sound quality, lower distortion, and even better value.

Powered by the Cirrus Logic CS43198 DAC chip, the Boss 2 achieves a THD of -120 dB, delivering darker, smoother sound with ultra-low noise—perfect for long listening sessions. With over 30 low-dropout regulators (LDOs), dual supercapacitors, and extensive filtering, this DAC offers exceptional clarity and precision for high-resolution audio streaming.

Designed for Raspberry Pi 4, the Boss 2 is available in an acrylic case with OLED display and remote control, making it as stylish as it is high-performing. For the best audio quality, pair it with the Nirvana PSU (earthed switch on) or the Shanti PSU.

Note: Raspberry Pi and microSD card are not included.

Key Features

• Premium Audio Performance – Uses Cirrus Logic CS43198 DAC for superior THD (-120 dB) and smooth, natural sound.
• High-Quality Power Filtering – Over 30 LDOs, dual supercapacitors, and upgraded common-mode chokes for noise reduction.
• OLED Display & Remote – Easy navigation and playback control right from your listening chair.
• Designed for Raspberry Pi 4 – Perfect fit with included acrylic case (ALU case option available separately).
• Flexible Power Options – Supports Boss 2 direct barrel input or Raspberry Pi Type-C input.
• Improved Wireless Streaming – Works best with external WiFi dongles for greater range and stable hi-res playback.

Technical Specifications

Audio Performance

• DAC Chip: Cirrus Logic CS43198 (Master Mode)
• THD: -120 dB (typical)
• THD+N: -114 dB
• Out-of-band noise: Ultra-low
• Sound Signature: Smooth, “darker” tonality compared to ESS-based DACs

Power Requirements

• Via Boss 2: 5V 2.85A via 5.5 x 2.1 mm barrel jack (Shanti, Nirvana, or standard 5V PSU)
• Via Raspberry Pi 4: 5V 2.85A via Type-C USB (adapter sold separately)
• If powering both Pi and Boss 2 separately, Boss 2 draws only 100 mA

Connectivity

• Compatible with Raspberry Pi 4 (case not compatible with earlier Pi models)
• External WiFi dongle recommended for extended range (up to 20m)

Included in Boss 2 Acrylic Bundle

• Boss 2 DAC
• Acrylic Case (for Raspberry Pi 4)
• OLED Display
• Remote Control