Quote:
Originally Posted by LuciferX  What do you people think about this combo?:
HT | OMEGA Claro Halo XT 24-bit 192KHz PCI [..]
+
AKG K 701 WHITE HEADPHONES
[..]
My current setup is: Onboard card (ALC888 :P) and JBL REFERENCE 410 BLACK, im from Argentina
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well, any soundcard will fare better measurements than your onboard POS...that's for sure!
but the Claro Halo gives *VERY* bad IMD measurements in RMAA, identical to your onboard chip actually.
here's some food for thoughts, look at the IMD+N rates
Code:
RightMark Audio Analyzer test report
Testing device Realtek HD Audio output
Sampling mode 24-bit, 96 kHz
Interface MME
Testing chain External loopback (line-out - line-in)
RMAA Version 6.2.3
20 Hz - 20 kHz filter ON
Normalize amplitude ON
Level change -0.1 dB / 0.1 dB
Mono mode OFF
Calibration singal, Hz 1000
Polarity correct/correct
Summary
Frequency response (from 40 Hz to 15 kHz), dB +0.02, -0.05 Excellent
Noise level, dB (A) -82.5 Good
Dynamic range, dB (A) 82.4 Good
THD, % 0.0047 Very good
THD + Noise, dB (A) -75.7 Average
IMD + Noise, % 0.023 Good
Stereo crosstalk, dB -77.6 Very good
IMD at 10 kHz, % 0.021 Good
General performance Very good
Frequency response
From 20 Hz to 20 kHz, dB -0.16, +0.02
From 40 Hz to 15 kHz, dB -0.05, +0.02
Noise level / Left Right
RMS power, dB -80.9 -79.9
RMS power (A-weighted), dB -82.4 -82.7
Peak level, dB FS -63.1 -63.1
DC offset, % +0.0 +0.0
Dynamic range / Left Right
Dynamic range, dB +80.5 +80.1
Dynamic range (A-weighted), dB +82.3 +82.5
DC offset, % +0.00 +0.00
THD + Noise (at -3 dB FS) / Left Right
THD, % +0.0047 +0.0047
THD + Noise, % +0.0203 +0.0194
THD + Noise (A-weighted), % +0.0168 +0.0159
Intermodulation distortion / Left Right
IMD + Noise, % +0.0229 +0.0240
IMD + Noise (A-weighted), % +0.0198 +0.0181
Stereo crosstalk /Left Right
Crosstalk at 100 Hz, dB -68 -69
Crosstalk at 1000 Hz, dB -76 -77
Crosstalk at 10000 Hz, dB -70 -71
IMD (swept tones) / Left Right
IMD + Noise at 5000 Hz, 0.0217 0.0198
IMD + Noise at 10000 Hz, 0.0209 0.0203
IMD + Noise at 15000 Hz, 0.0216 0.0199
Asus ST, headphones out(mid setting)
Code:
RightMark Audio Analyzer test report
Testing device ASUS Xonar Essence ST Audio
Sampling mode 24-bit, 96 kHz
Interface DirectSound
Testing chain External loopback (line-out - line-in)
RMAA Version 6.2.3
20 Hz - 20 kHz filter ON
Normalize amplitude ON
Level change 0.4 dB / 0.3 dB
Mono mode OFF
Calibration singal, Hz 1000
Polarity correct/correct
Summary
Frequency response (from 40 Hz to 15 kHz), dB +0.01, -0.09 Excellent
Noise level, dB (A) -110.0 Excellent
Dynamic range, dB (A) 110.2 Excellent
THD, % 0.0005 Excellent
THD + Noise, dB (A) -100.7 Excellent
IMD + Noise, % 0.0012 Excellent
Stereo crosstalk, dB -108.2 Excellent
IMD at 10 kHz, % 0.0011 Excellent
General performance Very good
Frequency response
From 20 Hz to 20 kHz, dB -0.16, +0.01
From 40 Hz to 15 kHz, dB -0.09, +0.01
Noise level / Left Right
RMS power, dB -109.0 -108.8
RMS power (A-weighted), dB -110.1 -110.0
Peak level, dB FS -81.2 -80.3
DC offset, % -0.0 -0.0
Dynamic range / Left Right
Dynamic range, dB +108.9 +109.1
Dynamic range (A-weighted), dB +110.1 +110.2
DC offset, % -0.00 -0.00
THD + Noise (at -3 dB FS) / Left Right
THD, % +0.0004 +0.0006
THD + Noise, % +0.0009 +0.0009
THD + Noise (A-weighted), % +0.0009 +0.0010
Intermodulation distortion / Left Right
IMD + Noise, % +0.0012 +0.0012
IMD + Noise (A-weighted), % +0.0009 +0.0009
Stereo crosstalk / Left Right
Crosstalk at 100 Hz, dB -102 -103
Crosstalk at 1000 Hz, dB -107 -108
Crosstalk at 10000 Hz, dB -97 -96
IMD (swept tones) / Left Right
IMD + Noise at 5000 Hz, 0.0011 0.0011
IMD + Noise at 10000 Hz, 0.0010 0.0010
IMD + Noise at 15000 Hz, 0.0011 0.0011
claro halo xt(measurements given by the manufacturer) :
Code:
RightMark Audio Analyzer test report
Testing device Claro halo
Sampling mode 24-bit, 48 kHz
Interface DirectSound
Testing chain External loopback (line-out - line-in)
RMAA Version 6.0.6
20 Hz - 20 kHz filter ON
Normalize amplitude ON
Level change -0.2 dB / -0.1 dB
Mono mode OFF
Calibration singal, Hz 1000
Polarity inverted/inverted
Summary
Frequency response (from 40 Hz to 15 kHz), dB +0.03, -0.04 Excellent
Noise level, dB (A) -111.7 Excellent
Dynamic range, dB (A) 111.8 Excellent
THD, % 0.0009 Excellent
THD + Noise, dB (A) -97.5 Excellent
IMD + Noise, % 0.0014 Excellent
Stereo crosstalk, dB -109.3 Excellent
IMD at 10 kHz, % 0.017 Very good
General performance Excellent
Frequency response
From 20 Hz to 20 kHz, dB -0.10, +0.03
From 40 Hz to 15 kHz, dB -0.04, +0.03
Noise level / Left Right
RMS power, dB -111.8 -110.1
RMS power (A-weighted), dB -112.8 -110.6
Peak level, dB FS -83.6 -83.4
DC offset, % +0.4 +0.4
Dynamic range / Left Right
Dynamic range, dB +111.8 +110.5
Dynamic range (A-weighted), dB +112.8 +110.9
DC offset, % +0.41 +0.39
THD + Noise (at -3 dB FS) / Left Right
THD, % +0.0010 +0.0009
THD + Noise, % +0.0011 +0.0012
THD + Noise (A-weighted), % +0.0013 +0.0014
Intermodulation distortion / Left Right
IMD + Noise, % +0.0013 +0.0014
IMD + Noise (A-weighted), % +0.0010 +0.0011
Stereo crosstalk / Left Right
Crosstalk at 100 Hz, dB -106 -111
Crosstalk at 1000 Hz, dB -106 -111
Crosstalk at 10000 Hz, dB -97 -106
IMD (swept tones) / Left Right
IMD + Noise at 5000 Hz, 0.0094 0.0090
IMD + Noise at 10000 Hz, 0.0167 0.0159
IMD + Noise at 15000 Hz, 0.0249 0.0238
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. But well I think it´s mostly the DAC part that does the magic. And the amp section isn´t ruin anything that´s for sure 
