Protocol Max Brings Desktop-Class Performance to Your Pocket with Up to 600mW of Power, Driving Everything from Sensitive IEMs to Demanding Headphones

• Dual Cirrus Logic CS43198 chips for transparent, hi-res digital conversion
• Dual SG Micro SGM8262-2 op-amps provide up to 600mW of clean amplification
• Adjustable and persistent Parametric EQ
• Dual power modes for efficiency or max output
• 4.4mm BAL + 3.5mm SE outputs with low output impedance for maximum compatibility

Pocket Power, Unleashed

The Protocol Max marks CrinEar’s bold entry into the source gear market, bringing their philosophy of acoustic precision to digital-to-analog conversion and amplification. With up to 600 mW of clean power on tap from its balanced output, the Protocol Max effortlessly drives everything from sensitive in-ear monitors to demanding full-size headphones, all without breaking a sweat. 

Beyond raw strength, the Protocol Max features persistent, PC browser-based parametric EQ via the Hangout.Audio Graph Tool, letting you fine-tune your sound signature and store your custom profiles directly onto the device. No companion app, no extra steps—just plug into your PC, set your curve, and enjoy.

With its blend of muscle, precision, and user-focused flexibility, the Protocol Max balances clean, reference-grade performance with real-world practicality, making it the ultimate pocket-sized DAC-amp for enthusiasts and professionals alike. 

Dual DAC, Dual Amp

Equipped with dual Cirrus Logic CS43198 DACs and dual SG Micro SGM8262-2 op-amps, the Protocol Max delivers crystal-clear resolution, expansive dynamics, and distortion-free amplification, engineered for absolute fidelity. 

Parametric EQ

Your sound, your way. With the browser-based Hangout.Audio Graph Tool, you can upload and store PEQ profiles directly on the device. No extra apps, no hidden steps; just seamless customization that stays with you. 

Learn how to upload PEQ profiles into your Protocol Max using this guide. 

Two Power Modes

Switch between Eco mode for power efficiency and Boost mode for maximum power output. Whether you’re listening on the go or at your desk, the Protocol Max adapts to your gear and your needs. 

Versatile Outputs

With 4.4mm balanced and 3.5mm single-ended connections, the Protocol Max pairs effortlessly with a wide range of headphones and earphones. A low output impedance (<0.3Ω SE) ensures precise control and compatibility across the board. 

Built to Travel

Housed in sleek aluminium with a quad-wire weaved cable, the Protocol Max is built for durability without sacrificing portability. Compact, solid, and ready to perform anywhere. 

Specifications

• DAC: Dual Cirrus Logic CS43198
• Amplifier: Dual SG Micro SGM8262-2
• Max. Power Output (BAL): 600mW @ 16Ω (Boost Mode)
• Max. Power Output (SE): 500mW @ 8Ω (Boost Mode)
• SNR @1kHz 0dBFS: 132dB (BAL), 127dB (SE)
• THD+N @1kHz 0dBFS: -118dB (BAL), -116dB (SE)
• Crosstalk @1kHz -6dBFS: -116dB (BAL), -65dB (SE)
• Output Impedance: <0.6Ω (BAL), <0.3Ω (SE)

In the Box

• CrinEar Protocol Max DAC/Amp
• USB-C to C cable
• USB-C to A cable
• User manual