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Psst is a faceless application that lets you adjust/mute the volume of your Mac's startup chime. Double-Click "Psst!" in the Finder to adjust the volume settings.

Important: The method Psst uses to change the volume does not work on every model... What it actually does: It simply adjusts the volume settings before shutting down and after logging in.

What's New

Version 2.1.1:
  • Added check routine to prevent Psst from launching from disk image
  • Psst asks you to anonymously submit your Mac configuration in order to create a comprehensive list of (un-)supported setups. Check it out here: www.satsumac.com/Psst/Compatibility.php
  • Uninstalling Psst: just stop it and trash it!


OS X 10.4 or later

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Psst User Discussion

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IanB3074 Member IconReview+0

I have tested Psst on my 2.8 GHz Intel Core 2 Duo iMac running OS X 10.8.5 Mountain Lion and it works perfectly, either completely muting or reducing the volume of the startup chime.

Reply0 replies
Version 2.1.1
tommytune Member IconReview+0

I Love this little utility app - I've used it for 6 years on a G4 Powerbook, a G4 Digital Audio, a MDD G4, and a G5 dual 2.0 (all running Tiger 10.4.11). Also worked on the G5 & the Powerbook under Leopard 10.5.6.

After years of "too loud" startup chimes waking the kids at 3 AM [and freaking ME out as well!], I finally have the perfect solution! The app is 'persistent', so set it and forget it! (unless you want to make changes, then just relaunch & move the slider volume). One of my all-time favorite apps!! Does EXACTLY what it needs to, and DOESN'T mess with anything else! I've never had any app or sys process conflict with it.

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Version 2.1.1
Dawda Member IconReview+11

This is a wonderful little utility.
After downloading the DMG from MU I got the message that it's corrupt. After searching the web i FINALLY found one that worked.

I uploaded the working one to my dropbox for you to download. I'll have it there for as long as this one does not work.


I scanned it with avast, nothing.
But please tell me if you find something wrong with the file.

Reply1 reply
Version 2.1.1

Thank you

Swordfish Member IconComment+47

For those wondering, Psst works in Lion, 10.7.2

Reply1 reply
Version 2.1.1

Once I attach my external speakers, it doesn't control the volume anymore. Never had this issue before. Any ideas?

magosilvan Member IconReview+94

I downloaded v.2.1.1 for my wife's new iMac. I setted near to zero the volume and tried to reboot without submitting an answer to developer's question. The system told me Psst prevented to relaunch. I tried to quit it, but it refused. I was forced to a forced quit.
So I relaunced and I answered it didn't work.
Then I CLOSED the submitting window and, surprise, relauncing again I discovered it works. After many attempts I can confirm that it works flawlessly.
The problem is all in that window! It's impossible to submit before trying.
It should have a short time persistence then automatically disappear.

Add iMac 2,66 GHz Intel Core 2 Duo with OsX 10.5.5 to compatible Mac list.

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Version 2.1.1
Jolly-Roger Member IconReview+57

StartupSound.prefpane doesn;t sem to work at all on Intel-based Macs. This utility, on the other hand, works flawlessly on both PowerPC- and Intel-based Macs. So I'm revising my review rating for it. : )

Reply1 reply
Version 2.1.1

Hi. It's been a couple of years since you commented on Psst, stating that StartupSound.prefpane didn't work on Intel-based Macs, but there's now an updated version that does at http://www5e.biglobe.ne.jp/~arcana/software.en.html.

gilwestfall Member IconComment+0

i upgraded to iLife '08 and then my sound stopped working... internal speakers were not listed in my sound preferences. during the iLife install the machine deleted some of my system caches. i uninstalled Psst & the sound came back... could have been a coincidence but if someone else has the same combination maybe removing may be worth a try. i didn't try to re-install it.

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Version 2.1.1
bztranier Member IconComment+0

Started using Psst 2.1 in June 07 - worked fine for a couple months. Then stopped working. Trashed it and downloaded again, and again it worked fine till yesterday. Trashed it and downloaded 2.1.1. So far, no joy.
Intel iMac 1.83 GHz, OS/X 10.4.10

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Version 2.1.1
maconnect Member IconReview+26

This software is great. Thanks a lot to his autor. Works fine on a MBP and iMacG5.

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Version 2.0.8
nowheredense Member IconComment+18

Another freeware to consider, if Psst does not work, is

StartupSound.prefPane 1.1b1

It has worked flawlessly both of my G5 Tower and MacBook Pro.

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Version 2.0.8
There are no Ratings for this App yet.
> 4 10


Current Version (2.x)


Downloads 62,648
Version Downloads 49,035
Type Utilities / System
License Free
Date 31 Oct 2007
Platform OS X / PPC 32 / Intel 32
Price Free
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