ARIETTA crossfeed filter measurements.

The "CORDA ARIETTA" headphone amplifier of the MEIER-AUDIO is equipped with a low level crossfeed filter for relaxing listening by headphones. Below are some measurements of the Meier crossfeeder.

CORDA ARIETTA

See also audio tests of the headamp here.

The graphs shows measurements like a Bauer stereophonic-to-binaural DSP (bs2b) description.

Crossfeed filter frequency response.

The frequency responses of the crossfeed filter are made by frequency analysis of white noise: one channel signal is for frequency responses of lowpass and highboost filters, mono two channels signal and independent two channels signal is for approximate stereo frequency response.

Crossfeed filter time delay response.

The time delay response of the crossfeed filter are made by analysis of one channel sinusoidal signal.

See also original description of the Meier's crossfeed http://www.meier-audio.homepage.t-online.de/crossfeed.html.

MEIER-AUDIO CORDA ARIETTA headphone amplifier RMAA test report.

This is a more precise RMAA tests of the MEIER-AUDIO CORDA ARIETTA headphone amplifier are made with Asus Xonar Essence STX sound card through ASIO drivers.

CORDA ARIETTA headamp

Test conditions:

• Sound card line output to amp input and amp output with volume at 2 clock to card line input.
• RMAA version 6.3.0.
• 24 Bit-Depth, 96 kHz sample rate.
• Asus drivers version 7.12.8.1794 (Xonar Essence STX).
• ASIO version 2.0.0.07 at 24 Bit-Depth, 10 ms latency.
• Windows 7 Pro SP1 x64.

See also:

• Asus Xonar Essence STX RMAA tests.
• Early made tests of the amp.
• MEIER-AUDIO CORDA ARIETTA headphone amplifier inside.

Test results

Frequency response subtracted from sound card response

Dynamic range

THD

IMD

Stereo crosstalk

Focusrite Scarlett 2i4 RMAA test report (Balanced I/O).

Below is a RightMark Audio Analyzer (RMAA) test results of the balanced I/Os of the Focusrite Scarlett 2i4 USB sound card.

See also the early posts about viscera and unbalanced I/O tests of the Scarlett 2i4.

 

Focusrite Scarlett 2i4

Abbreviations and conditions:

1. S1 - mono; instrumental + pad mode at 11 clock gain; 3 clock monitor volume; 220 ms latency; ASIO;
2. S2 - stereo; instrumental + pad mode at 11 clock gain; 3 clock monitor volume; 220 ms latency; ASIO;
3. S3 - stereo; instrumental + pad mode at 11 clock gain; 3 clock monitor volume; 220 ms latency; MME (16-bit @ 96 kHz);
4. S4 - stereo; instrumental mode at 11 clock gain; 1 clock monitor volume; 220 ms latency; ASIO;
5. S5 - stereo; line mode at 1 clock gain; max monitor volume; 220 ms latency; ASIO;

• Windows 7 x64;
• Focusrite USB2.0 Win-2.5.1 Driver;
• ASIO 24-bit @ 96 kHz;
• MME 16-bit @ 96 kHz (only 16-bit by Focusrite MME driver supported);
• RMAA 6.3.0;
• Balanced TRS jack cable - #1 output to #1 input, #2 output to #2 input;

Test results

S1 - THD

S2 - THD

S2 - Stereo crosstalk

S2 - Dynamic range

S2 - IMD