After testing in the benchmark mode in the Reference Audio Analyzer software, the data is added to the online database of the RAA website.
You can view the test results on the comparison pages
and summary reports for beginners
and professionals.
You can go to the desired report or comparison/selection service through the menu on this page. Additionally, you can go to the comparison pages from any graph from reports and add other tested products for direct comparison.
OPPO HA-1 is available in reports and services. You are on the title page of the reports and services.
Information for entry level users
The automatic selection of the optimal AMP models
Information for all
Versus of characteristics
- Comparison of amplifiers by loudness (Volume Level)
- Comparison of the optimal range of volume control
Information for professionals
reports for a pro (DAC Line Out)
Comparison of on-line graphs
- Frequency response - Headphone amplifier
- Comparison of basic characteristics
- Impedance
- Comparison of the frequency response/SPL of the bundles of headphones and amplifiers
- Voltage and Sensitivity
- Frequency response - DAC Line Out
- Harmonic Distortion vs Level
- Spectra
- Impulse response
More detailed
Measurements of OPPO HA-1 Balanced Out were carried out by Roman Kuznetsov on the hardware-software complex RAA.
The OPPO HA-1 Balanced Out test was conducted as a black box test, without regard to cost and prestige. This is the basic principle for making measurements, measurement reports and developing tests in RAA.
I believe that it is important to do not make an absolute assessment of the device, but an aggregate assessment when working together with a headphones and taking into account external factors. This allows you to effectively reveal the potential of the entire set of devices or to make a more optimal choice of components.
Kuznetsov Roman
Founder of RAA
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