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ASUS ROG Phoebus Sound Card Pictured, Driven by New CMI Oxygen Express Chip
ASUS displayed its latest sound card, the Republic of Gamers (ROG) Phoebus. This card is designed for multichannel gaming audio. While it might not pack any fancy DSP that doesn't already exist, its AMP circuitry is so designed to give the best positional audio that could come handy with competitive online gaming. With this card, ASUS also brought to the fore C-Media's latest audio chipset, the CMI 8788DH Oxygen Express, which packs native PCI Express support. All PCI Express sound cards launched by ASUS so far feature OxygenHD and ASUS-rebadged AV-100 chipsets, that use legacy PCI, and hence depend on PCIe-to-PCI bridge chips by PLX to function on PCI Express.
The primary DAC for headphone/front-out channel of the ROG Phoebus is TI-BB PCM1792A, with stellar signal-noise ratio (SNR) of 127 dBA. Other main channels are handled by Cirrus Logic, probably the CS5381, with SNR of 120 dBA. There's also a tertiary Realtek ALC889 (110 dBA) CODEC that probably handles an independent set of audio channels, or handles the digital outputs, since it's licensed with a few Dolby technologies. On the AMP side, we spy bleeding-edge OPAMPs, a Texas Instruments 6120A2(?) AMP chip (for the headphones channel), etc. Many parts of the card are electrically isolated from the PCI Express slot, to prevent interference from the ground layer of the motherboard. So these parts rely on power drawn from a 6-pin PCIe power connector, conditioned by a tiny VRM. Only the power-conditioning parts of the card use solid-state capacitors, the AMP and audio parts use audiophile-grade electrolytic capacitors since by design they are better for analogue circuits. The whole card is topped off with a groovy-looking EMI shield. Expect this card to be costly. Source: VR-Zone |
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#2 |
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I already fear the day when audio cards will require dual 8 pin power. *shiver*
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#3 | |
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Editor & Senior Moderator
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Quote:
Why no Molex? Because it's an old, ugly connector in its dusk. |
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#4 |
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I've been waiting for this card
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#5 |
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ASUS Xonar Essence STX was using 4 pin molex for power supply in addition to PCIe. Also power draw was apparently pretty high because i had power stability issues when it was plugged in on a 550W PSU with higher end components. It was aooarently on the edge already and the soundcard tipped it over...
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#6 |
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Crazy Dogmatic Bullsh!t!
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I wonder if this is worth getting over the Xonar STX....
though, I really do wish Asus would spend more time on their Audio drivers. They only really release a new driver once or twice a year and it doesnt matter if their new drivers are bugged or not they just make you wait until the next release ![]() luckily, modded drivers are available and they are leagues ahead of Asus's the change log is like a 50 page essay on Astro Physics compared to Asus's own changes/updates.
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#7 |
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Electrolytic caps ?!
I know it's not a power-circuit, but still... |
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#8 | |
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you obviously do not know a whole lot about analogue circuits, many professional and top end audio equipments use electrolyte caps because they tend to sound more 'musical' (warm or tube-like) to the solid state caps. |
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#9 | ||
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Editor & Senior Moderator
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Quote:
Besides VRM areas, a PC motherboard doesn't really need solid caps in other parts. The vendors put them anyway, for PR reasons. Quote:
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#10 |
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Battosai
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It looks cool.. It sounds like something good.. But, if I can't go and swap my opamps easily... It's not for me...
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The only way success is before work, is in the dictionary Support for the mind. Support for your hardware |
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#11 | |
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Quote:
Also gold painted electrolytic caps are easylier to explain for the marketing department. There are some green/blue/magenta ones that are much better. Even if it makes no difference whatsoever.
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There are more things in heaven and earth then are dreamt of in your philosophy. |
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#12 |
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Crazy Dogmatic Bullsh!t!
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people believe too much that anything made of gold (or looks like gold) is pure win.
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![]() “I used to be a serial upgrader like you, then i took a downgrade to the knee” -FreedomEclipse |
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#13 | |
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Quote:
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RejZoR's Little Secrets @ rejzor dot tk |
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#14 | |
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#15 |
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I'm the only one
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Very nice, really good SNR on the front outputs, but were is the FP connection gone
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http://img.techpowerup.org/110324/v6351cpuzvalj197.jpg ]Monster E6300 oc http://www.techpowerup.com/gallery/2163.html |
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#16 |
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That shield looks ugly...
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#17 |
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Realtek ftw
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#18 |
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How About A TPU Review!?
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#19 | |
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#20 |
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Did Asus ever fix that headphone/eardrum damaging super screech? I know it's rare but the possibility of ear damage is significant enough to warrant never recommending their soundcards.
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#21 |
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My Auzentech Preludes have that feature I believe. I haven't upgraded anything on any of them though. Should I?
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The head honcho at the Serious Gamers' Association Criticism “However, the Intel CPU dispatcher does not only check which instruction set is supported by the CPU, it also checks the vendor ID string. If the vendor string is "GenuineIntel" then it uses the optimal code path. If the CPU is not from Intel then, in most cases, it will run the slowest possible version of the code, even if the CPU is fully compatible with a better version. ” |
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#22 |
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#23 |
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#24 |
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How is Asus software? I'm still feeling burned by my old Creative problems.
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#25 | |
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LOGISYS AD201 12v Molex to 12V 6Pin Adapter
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The head honcho at the Serious Gamers' Association Criticism “However, the Intel CPU dispatcher does not only check which instruction set is supported by the CPU, it also checks the vendor ID string. If the vendor string is "GenuineIntel" then it uses the optimal code path. If the CPU is not from Intel then, in most cases, it will run the slowest possible version of the code, even if the CPU is fully compatible with a better version. ” |
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