# No sound output possible after updating Studio Low Level /Core API from 1 to 2
**URL:** https://qa.fmod.com/t/no-sound-output-possible-after-updating-studio-low-level-core-api-from-1-to-2/15375
**Category:** FMOD Engine
**Created:** [January 9, 2020, 10:38pm UTC](https://qa.fmod.com/t/no-sound-output-possible-after-updating-studio-low-level-core-api-from-1-to-2/15375 "2020-01-09T22:38:04Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Controller1](https://qa.fmod.com/u/Controller1)
#### Post date: [January 9, 2020, 10:38pm UTC](https://qa.fmod.com/t/no-sound-output-possible-after-updating-studio-low-level-core-api-from-1-to-2/15375/1 "2020-01-09T22:38:04Z")
In my player I replaced the fmod.dll from Version 1.10.18 to 2.00.06 (both the latest versions).
Seems to run stable, but I cannot hear anything (both with x64 and x32 versions) (Spektrum showing same levels)
I checked the fmod changelogs but could not find anything that could cause this.
So I checked the FMOD\_OUTPUTTYPE declarations and found those changed heavily.
Sadly, not only the IDs have changed. My player supports FMOD\_OUTPUTTYPE\_DSOUND (#6 in 1.10) and FMOD\_OUTPUTTYPE\_WINMM (#7 in 1.10). Both are now missing.
Due the changed IDs, my player should currently run FMOD\_OUTPUTTYPE\_WASAPI (#6 in 2.6) or FMOD\_OUTPUTTYPE\_ASIO (#7 in 2.6) instead.
However I should hear sond, at least with WASAPI? (I have no ASIO software installed)
Running Windows 7 64bit
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### Author:  [@brett](https://qa.fmod.com/u/brett)
#### Post date: [January 12, 2020, 10:30pm UTC](https://qa.fmod.com/t/no-sound-output-possible-after-updating-studio-low-level-core-api-from-1-to-2/15375/2 "2020-01-12T22:30:15Z")
Hi,
WASAPI is the default in Windows now and needs nothing special to setup, are you using something pre-Windows 7? Winmm and dsound are old/deprecated and emulated these days.
Check the examples, they all run in default audio mode so you should hear something.
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### Author:  [@Controller1](https://qa.fmod.com/u/Controller1)
#### Post date: [January 13, 2020, 4:12pm UTC](https://qa.fmod.com/t/no-sound-output-possible-after-updating-studio-low-level-core-api-from-1-to-2/15375/3 "2020-01-13T16:12:55Z")
Hi,
seems there was an error in my app about which soundcard was actually used, which with the changed output modes unluckily ended up using my third sound-card. That soundcard is used only for my external microphpne and not plugged to any speaker. It’s disabled in Windows, but I guess still available for ASIO.
So, problem solved I guess. Thanks for your help.