Precision Meets Power in the Palm of Your Hand

The CrinEar Protocol Max marks the brand’s bold debut in the source gear world, carrying forward CrinEar’s philosophy of acoustic precision into digital-to-analog conversion and amplification. Designed for audiophiles, engineers, and music lovers alike, this portable USB-powered DAC-amp delivers pure, reference-grade sound in a compact and rugged body.

Designed for Effortless Driving Power

With up to 600mW of clean output from its balanced connection, the Protocol Max confidently drives everything—from ultra-sensitive in-ear monitors to high-impedance full-size headphones. Its dual operational amplifiers ensure stable current delivery with minimal distortion, offering both raw power and refined control in one pocket-sized powerhouse.

Custom Sound, Simplified

No apps, no software installs, no hassle. The Protocol Max introduces a browser-based parametric EQ via the Hangout.Audio Graph Tool, allowing users to adjust and save their preferred tuning directly onto the device. Your EQ settings stay stored internally, so your personalized sound travels wherever you go.

Intelligent Dual Power Modes

Choose your performance style: Eco Mode for power efficiency and longer sessions, or Boost Mode when you need full output for demanding headphones. The seamless switching ensures optimal performance in any setup—portable or desktop.

Crafted for Everyday Portability

Milled from premium aluminum, the Protocol Max’s sleek and sturdy housing not only looks elegant but also offers reliable protection. Lightweight yet durable, it’s built to travel effortlessly with your gear while maintaining a professional, modern aesthetic.

Technical Details

DAC Chips
Dual Cirrus Logic CS43198
Amplifier Chips
Dual SG Micro SGM8262-2
Output Power
Up to 600mW @ 32Ω (Balanced)
Output Options
4.4mm Balanced / 3.5mm Single-Ended
Output Impedance
<1Ω
EQ Control
Browser-based via Hangout.Audio Graph Tool
Power Modes
Eco / Boost
Power Source
USB-Powered
Housing
CNC-Machined Aluminum
Compatibility
Windows, macOS, Android (OTG)
Dimensions
Compact Portable Form Factor
Inside the Box
  • 1 x CrinEar Protocol Max
  • User Manual

30-Day Return Policy

You may return any non-customized product that is still factory sealed, within 30 days upon receiving it. For items that are damaged, incorrect, or faulty upon delivery, Linsoul will assess the issue and provide a solution accordingly.

1 Year Warranty

The CrinEar Protocol Max Comes with a 1 year warranty on the AMP & DAC only. Warranty doesn't apply to the included accessories.

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