Hello everyone,

I recently acquired an AZT2320 based ISA sound card picture below.

When testing the OPL3 the sound is perfect, however Sound Blaster digital sound has a vey awful quality.

I recorded some of Day of Tentacle intro attached. You can clearly hear a very pronounced noise in S consonant of "Nonsense!". In Phil's review of a similar card, he complains about sound quality but listening to his DOTT recording I don't hear same type of noise or as much noise as mine.

The board has quiet a few electrolytic capacitors, many of them connected directly to the chipset. Unfortunately, I could not find any datasheet or schematics for AZT2320 to see if any caps are used for digital sound filtering.

So my question is, has anyone else noticed same type of sound quality degradation? If this is an issue of the chipset itself, I really don't want to waste any capacitors or time on fixing this.