Selection of AMPs according to the measured characteristics under the parameters of the amplifier and the enviropment

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

Types of reports (test suite) PRO

• Reports of headphones measurements
• Reports of headphones AMPs' measurements
  (internal amp: DAP, sound cards, DACs)
• Reports of DACs' measurements
  (Line out: DACs, sound cards and DAPs)

Types of reports (test suite) USER

• Reports of headphones measurements
• Reports of headphones AMPs' measurements
  (internal amp: DAP, sound cards, DACs)

Certification

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

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

online calculators

• V1/V2 => dB
• V1+dB => V2
• V+R => W, I
• W+R => V, I (dBV)
• I+R => V, W
• dB/V <=> dB/mW
• V <=> dBV <=> dBu <=> Vpp
• W <=> mW <=> dBW <=> dBm
• dB <=> %
• Level dB <=> %

Reference Audio Analyzer

• about RAA
• news
• forum
• F.A.Q.
• Review
• History
• Test of devices
• РЎollaboration
• Partners and clients
• Feedback

Setting

• set display

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