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Just got my Xonar Essence STX for Christmas - Page 3

post #21 of 23
Quote:
Originally Posted by yellowtoblerone View Post
why you no google "opamp"

just a small ss amp


issue is stx sound qual can only take you so far. its just not worth changing the opamp, or even mi-hi fi headphones for that matter
what!? have you guys opamp rolled...ever!? Do you guys know any electrical / electronic engineers!? opamps in an electrical circuit is critical to how the electrical signal is processed.
post #22 of 23
Yes, I do know an electrical engineer...namely, myself and a whole bunch of other EE grads. Last time I tried an opamp swap on an X-Fi XtremeMusic, I came to the conclusion that it didn't really do much of anything. I did side-by-side listening between an X-Fi with the LM4562 and an X-Fi with the stock NJM4556 on the front channel and heard no differences between the two. The X-Fi Hot-rodding guide even stated that this change should make the biggest difference in sound.

Given the differences in slew rates, frequency response and gain bandwidth products, I believe physically, there should be differences. However, I'm still skeptical if you'd actually hear those differences given a side-by-side test with identical hardware otherwise.

This is the problem I see a lot with audio. You can change something like an opamp on a sound card or DAC or maybe a cable on a headphone, but no one ever has the pre-modded version to compare to, which, unfortunately for me, invalidates a lot of claims. If everybody did side-by-side comparisons for modded and unmodded, I'd have a lot more reason to believe people aren't just fooling themselves.
Edited by RallyMaster - 12/27/10 at 11:17pm
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Malignance
(24 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K Asus P8Z68-V eVGA GTX670 FTW 16GB Mushkin DDR3-2100 1.5V 
Hard DriveHard DriveHard DriveOptical Drive
2 x 128GB Crucial M4 2 x 1TB Samsung F3 RAID0 1.5TB Seagate Asus 22X DVDRW 
CoolingOSMonitorMonitor
Noctua NH-D14 Windows 7 Ultimate 64-bit Dell Ultrasharp U2410 Asus ProArt PA248Q 
KeyboardPowerCaseMouse
Rosewill RK-9000BR PCP&P Silencer MKIII 600W Lian Li PC-A05NB Logitech G500 
Mouse PadAudioAudioAudio
Rocketfish Dual Sided Asus Xonar Essence STX Infinity Primus P153 | Dayton DTA-120 Amplifier... Shure SRH840 
AudioAudioAudio
Audio Technica ATH-AD700X Objective DAC Audio-Technica ATR2500-USB 
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Reply
post #23 of 23
Well, depends on the circuit really, particularly the circuit gain.

See here:

http://www.jensign.com/RMAA/RMAAOpAmpTests.html
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