Advanced Gravis Ultrasound - some questions regarding Revisions

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Advanced Gravis Ultrasound - some questions regarding Revisions

Postby retro games 100 » 2018-8-10 @ 06:35

Does anyone know how many PCB revisions the Advanced Gravis Ultrasound Classic card had? I can only think of 3, but I'm guessing there may be more. I can think of:

2.4 (I think)
3.4
3.74

I guess there must have been a 1.something card?

Also, I am guessing that the actual sound quality output would be the same across all revisions, or perhaps was that not entirely the case? For example, as revisions went onwards with Creative cards, they sometimes got poorer, as they cut corners with streamlining production.

For those of you who own more than one revision of this card, do they sound the same, in terms of the sound output quality?

Thanks a lot for any comments!
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Re: Advanced Gravis Ultrasound - some questions regarding Revisions

Postby Rawit » 2018-8-10 @ 08:40

From Pouet:

http://www.pouet.net/topic.php?which=97&page=1#c1641

"The early ones had rather horrible 12-bit DACs" makes me assume there is a big difference in sound quality output. Later revisions have a mixer and combined several chips AFAIK. Some versions have their channels swapped and the drivers compensate for this.

I own GUS ACE cards, but both 1.0 and 1.1 sound the same to me. The 1.0 doesn't seem to suffer from the swapped channels bug, but I didn't test this specifically.
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Re: Advanced Gravis Ultrasound - some questions regarding Revisions

Postby tpowell.ca » 2018-8-11 @ 01:47

I have revision 2.4 and 3.74 cards and cannot hear any diffidence in quality between them.
I'm not so sure about Pouet's 12bit DAC comment as both cards sound clean and don't have the bad aliasing typically associated with low bit-depth DACs.
    Merlin: Shuttle HOT-433v4, AMD5x86-133, 64MB, 16GB CF, ZIP100, ESS668, GUS, S3 VirgeGX 2MB, HardMPU
    Newton: DFI K6XV3+/66, AMD K6-III+450, 256MB, 32GB CF, AWE32 8MB, GUS 16MB, Voodoo3-3k
    Einstein: ASUS P8P400, P4-3GHz HT, 1.5GB, Quadro4 980XGL
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Re: Advanced Gravis Ultrasound - some questions regarding Revisions

Postby Disruptor » 2018-8-12 @ 01:54

I've got a revision 2.2
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Re: Advanced Gravis Ultrasound - some questions regarding Revisions

Postby Rawit » 2018-8-13 @ 07:12

Disruptor wrote:I've got a revision 2.2


How does it sound? And did you ever had the chance to compare it to another revision? Revision 2.2 is from what I've read the first one to reach the consumer market.
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Re: Advanced Gravis Ultrasound - some questions regarding Revisions

Postby Disruptor » 2018-8-13 @ 20:36

I'm sorry, I don't have another one.
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