Manufacturer Grado

Reports

• Test reports

Type of device

• Headphones
• Wireless headphones
• Internal sound cards
• USB-DAC
• DACs
• Combines with USB
• Smartphones
• Players
• Headphones with active amplification
• External sound cards
• Headphone Amplifiers with Line In
• Laptops & Tablets
• Combines with SPDIF
• Motherboards
• Displays
• USB-transport

Comparison On-Line

• The frequency response of headphones
• The combined frequency response of a bundle of headphones and an amplifier
• The combined frequency response of a bundle of headphones and an amplifier
• Basic characteristics of headphones
• Basic characteristics of headphone amplifiers
• Power and Sensitivity
• Comparison of volume gain AMPs

Automatic selection of chracteristics

• AMPs
• Headphone

Test On-Line

• Demo sounds from android mixer
• Demo sounds from Balanced armature vs dynamic drivers

Certification

• Certification and testing of bundles: player + smartphone + USB-DAC
• Certified devices

Collaboration

• Banner advertising
• Test of devices
• Partners and clients

RAA

• About RAA
• News
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• F.A.Q.
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Setting

• set display

• русский
• english