Audio line level out

I would like to hook up my dual 1GHz G4 (quicksilver) to my stereo but the headphone output provides very low volume audio output. What is the best way to boos my audio output so that the stereo has a decent input? Is there a way to get a line level output (via a USB device for example)? I tried some bluetooth receivers but apparently Apple provides only low quality audio output (telephone quality) via bluetooth.

Hi Billy,
here, try this: http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/6434002/wo/Pp3Jk gGCXGFW3DJqV6s18k78CEQ/2.0.21.1.0.8.25.7.11.7.3
It may do the trick, it may not. But I use one for a preamped input (mic), but on mine you can use it as a output too.
Rory

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HT1596 macbook Pro 15" mountain lion does't have any Audio Line In/Out.

i'm macbook Pro Retina display 15" user. i realised that this macbook does't have any Audio Line In/Out. I really need this to record audio direct from instrument to GarageBand. Any other way to do this?

Maybe the music pros will pop in soon (late night GarageBand sessions and all). From what I've read, most of the musical types around here use some sort of Firewire devices for audio in/out so you'd at the least need a Thunderbolt>Firewire adapter.
You might want to take your question to the GarageBand forum - https://discussions.apple.com/community/ilife/garageband - while a number of you musical types use MBPs, I would bet that you'd get more answers to your query in that forum.
Good luck,
Clinton

Audio: Line level Analog Out

I am trying to connect a Mac Mini (intel) to a regular Samsung HD LCD TV. DVI-to-HDMI works well for the video, but in order to get the audio, I am looking to get an analog, *line-level signal out* of the mini.
Any idea of how to achieve this?
TV audio input is RCA (red/white plugs). All the cables I have at the moment, seem to pull *headphone level* from the mac mini.
Help and pointers are much appreciated. Thanks // pascal

Your experience is a little unusual, and in fact if anything it should go the other way, since the output voltage for headphones is a little above the line-level typically used for pre-amped signals for which RCA inputs are commonly used, Thus if anything, the volume from the mini via the TV should be higher than normal TV channels.
All that being said, that assumes you have the volume control on the mini turned up of course! I typically leave mine at maximum (this is set in the Sounds preference pane, though I'm sure you know that!) and thus control the overall volume via the TV.
If your mini's volume is already a max, then test the output with a pair of headphones (or iPod earpieces etc) to check the output level is actually what it should be. If it's too low, there's a problem in the mini or with MacOS, if it's normal, then there's a problem with the audio cable or the TV. In the latter regard, I'm not familiar with the specific TV you have, but you might find you need to set the correct input for the video input you are using.

Line-level out?

How do I toggle the audio jack on a G4 Mini from headphone to line level output?
Mini 1.2/512/40/APE Mac OS X (10.4.6)

G4 Minis do not have optical out - only analog.
Line-level seems to be a strenght of analog signal - according to this WikipediA article. Whether the G4 will adjust the signal depending on which type of cable you use or always send the same signal is unknown to me, but there is no option in System Preferences nor in Audio MIDI Setup (in /Applications/Utilities) to specify which kind of signal can be sent.

Audio line level input gain too high

I've had this problem since getting my macbook 3 months ago. The line level input gain seems to be set very high no matter what & it still is too high after going into system preferences/sound & adjusting the input volume all the way down. I bought a Griffin imic thinking that might help getting around the problem, but it's just as overloading with the imic as using the macbook's built-in line input. Has anyone else experienced this? Any fixes?

Got it fixed, defective user

Line out audio line level too low to be useable, just started after update

I'm pretty sure this is a software issue. My line out level is so low it is not useable. Headphone jack still works. I removed all the audio preferences, cleared the cache, rebooted, reconfigured audio midi setup. I maxed out the volume, used the sound preference pane and selected line out. No improvent.
I picked up an m-audio Fast Track for now. Has anyone experienced this and resolevod it. I'm running 10.5.8...
< Edited by Host >

I put my son's PPC Mac Mini in target disk mode and booted off of it. Audio issue still persists. I wonder if the digital out / line out switch has a non volitile register ? or it could be fried ? I booted linux on onthe box and used alsamixer
I saw the ES9168 (or something like that).. that's the switch right ? It had no value.
I guess for now I'll get an Maudio device for sound.. but I still hope to figure our what if this is a software issue or is it hardware. The signal is low.. I put my oscilloscope on across the speaker inputs while a sound was playing.. 25mv! It's supposed to be 1v. I don't know how they designed the line out, there is no schemetic. I wonder if what happened is the line out pre-amp blew and I am hearing whatever signal is leaking/bridging across.
Everything else on my late 2005 powermac g5 is fine. It may be 5 years old but I can render HD video fine, and it's been very stable so I figured I'll keep it till it dies. There's one problem with that though. I've got over 3000 pictures in iPhoto that I shot, and my perl/php development projects are on it, plus my family videos are all on it I server them up to the Apple tv. Ahh.. I guess I have to backup / archive to something that will be compatible.
Well.. I'll start saving.
If you can think of any other possibilities let me know. I kind of think booting off the imac in target disk mode ruled out software, but then again the audio driver may be different from the one my G5 uses. Is there any Apple Service Disk kicking around for a Powermac G5 late 2005 model ? Maybe there's code on there to test / initialize the onboard audio.

Line level dock for ipod classic

In trying to figure out the best way to connect my ipod classic to my small Denon 30w stereo I've been experimenting. I have an old Apple branded dock I found in a drawer from 2004 when I bought my first Ipod, a 20g 2nd generation Ipod, the first one that came with the clickwheel. It has a line level output in the back, and it seems to work fine with the classic, as a matter of fact, with the Ipods volume and the stereos volume at the same levels it is at least 30-40% louder (and clearer) than using the typical headphone jack connection. But the line level plug on this dock is a little fidgety, bump it and one speaker goes out, you have to jiggle and/or twist the cable just so to recover, obvously it's a loosened connection inside the jack...so I go to Best Buy and get an offbrand dock that comes with a remote that was on clearance (it's a clone of Apples universal dock), it has a line level out as well, looks very much the same as the Apple dock. I assumed that a line level dock from any brand would be the same, since its sending a clean unamplified signal to the stereo (isn't it?), however the quality of the audio coming from this dock was about equal or even worse than the headphone jack, I really have to crank the volume on the stereo to get the same sound, and it just doesnt sound as good. I was surprised, I didnt think there was a lot going on in these docks, just routing the ipods signal to the stereo. Am I wrong here? Will springing $60 for Apples universal dock be the best option?

I connected my ipod classic to my maranz av receiver by apple dock. For best sound it is crucial to connect by dock input not audio out (earphones) ! For that i use apple component AV cable.

Any car charger with line level dock RCA outputs?

Hello,
My new car has RCA aux input jacks. I am looking for a car charger that will plug into a standard cigarette lighter type plug that also has the dock line level output with RCA plugs so I can keep the iPod charged and hook it up to RCA. I'm not interested in a headphone jack based RCA plug since that's not the line level out.

Found it cheap! $28.88
Roadshow Cable
PowerMac G5 Dual 2.5 Ghz Mac OS X (10.4.9)

Line Level Output

I have a wonderful pair of headphones and a nice headphone pre-amp to push them, I would much prefer to send the preamp a line level signal out and bypass any sort of volume control on the macbook. (the preamp has its own volume knob) Unfortunately after googling the problem I can not figure out how to do it.
How can i get a clean line level out signal to my pre-amp? (note: that the headphone preamp is straight analog, so digital connection is not an option)
Thanks!
J

Jake Lowen wrote:
Thank you for your help ypw. If I cant natively get a line out signal, surely there must be some kind of adapter to do us.. (DAC or USB?). What would be the cheapest way to get a line out signal?
Maybe this:
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?mco=361 EEAA5&nplm=TF815LL/A
It frankly doesn't do anything that MacBook doesn't already do, but perhaps the components are better.
I was just looking around for external DACs. As far as I recall, almost all tend to be really pricey since they're designed for audiophiles and have low production. The circuit itself can't be that expensive (they cost almost nothing to add to a preamp or receiver), but there isn't a huge market for separates.
I saw this one for $249:
http://www.ibasso.com/ShowProduct.aspx?ID=34
I saw a few combination DAC/headphone amps that allow you to turn off the amp output and use it as a line-level device. Pricey though.
This one looks pretty nice:
http://www.headphone.com/products/headphone-amps/the-mobile-line/headroom-total- bithead.php

Question about Audio line-in/optical in/Audio out/optical out

I have a late 2009 27" iMac (v3.06 GHz Intel Core 2 Duo). I note that on Apple's description of the rear ports, what I thought were simply headphone (Audio Out) and microphone (Audio In) jacks are described as:
1. Headphone/optical digital [S/PDIF] audio out:
"Line/Headphone output
"The headphone output is automatically selected for audio output if no external S/PDIF optical digital output device is detected. The headphone output supports a stereo data stream at bit depths of 16, 20, or 24 bits per sample and at sample rates of 44.1 kHz, 48 kHz, or 96 kHz. The headphone output volume can be adjusted from 0.0 dB to -64 dB..."
"The headphone output is automatically selected for audio output if no external S/PDIF optical digital output device is detected. The headphone output supports a stereo data stream at bit depths of 16, 20, or 24 bits per sample and at sample rates of 44.1 kHz, 48 kHz, or 96 kHz. The headphone output volume can be adjusted from 0.0 dB to -64 dB."
and
2. Audio line-in/optical in:
"Line input
"The analog line input operates independently from all other audio input ports and is always available. The line input supports recording at bit depths of 16, 20, or 24 bits per sample and at sample rates of 44.1 kHz, 48 kHz, or 96 kHz. Audio recorded from the line input is presented as a stereo data stream. You can adjust the line input gain from -16 dB to +30 dB..."
"The digital audio input has the following electrical characteristics (nominal specifications), based on input of a 1 kHz sine wave at 0 dBFS input level, 24-bit sample depth, and 44.1 kHz sample rate (unless otherwise specified below):
FSI – input sample rates: 44.1 kHz, 48 kHz, or 96 kHz
Bits per sample: 16, 20, or 24
Signal-to-noise ratio (SNR): >130 dB
Total harmonic distortion + noise (THD+N): <-130 dB (0.0003%)
Sound output/digital audio output port"
While, as an Olde School audiophile guy (62, and I still have vinyl!), I generally understand the gist of all this, I'm not at all hip to what S/PDIF optical digital output and/or digital audio input can do for me. So my questions are:
1. Can somebody please wise me up to the usage(s) of these optical inputs and outputs on the iMac?
2. The Apple description says,under "Line/Headphone output":
"PCM: 16, 20, or 24 bits per sample at sample rates of 44.1 kHz, 48 kHz, or 96 kHz
AC-3: 16 bits per sample at sample rates of 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, or 192 kHz"
and under "Line input
"The analog line input operates independently from all other audio input ports and is always available. The line input supports recording at bit depths of 16, 20, or 24 bits per sample and at sample rates of 44.1 kHz, 48 kHz, or 96 kHz. Audio recorded from the line input is presented as a stereo data stream. You can adjust the line input gain from -16 dB to +30 dB."
How -- where -- do I adjust these bit depth and sample rates?
Thanks for your help!
Bart

Thanks for the info. Turns out there's an even easier way to do it than using the "Audio Midi Setup": through the prefs in the latest (and probably some previous) version of VLC, which is currently Version 1.0.2 Goldeneye (Intel 64bit).
Now if we could only get full native resolution (or at least 1080p) HDMI input into the Mini-DPs of our 2560 x 1440-capable 27" iMacs and actually have it display something WAY better than 720p (half the resolution of which the 27" iMac is capable) to which Apple limited it, without having to buy a third-party $270.00 HDMI-to Mini-DPP converter and scaler. Call me crazy, but it seems kinda silly to have to pay another $300 to buy a device that will scale the 27" iMac's resolution back up to a measly 1080p, let alone its native 2560 x 1440. But, as the
As a side note, can anyone tell me -- perhaps the elusive and chimerical, but omniscient and omnipotent "communityhosts" of Apple.com -- why, in my original post in this thread, the phrase "1. Headphone/optical digital S/PDIF audio out" had the acronym "S/PDIF" stricken through, like it was a particularly egregious Anglo-Saxonism? Wikipedia defines the acronym thus: "S/PDIF is a data link layer protocol and a set of physical layer specifications for carrying digital audio signals between devices and components over either optical or electrical cable. The name stands for Sony/Philips Digital Interconnect Format."
If I have inadvertently broken another arcane, abstruse, and/or inscrutable canon of the rules (http://discussions.apple.com/help.jspa) governing what may or not be asked or said on these avowedly "user-driven" discussions, allow me to beg for forgiveness beforehand, pleading ignorance, and ask that Apple's "community hosts" or administrators would expand upon and make very clear, in their "Apple Discussions Terms of Use," a comprehensive list of terms, subjects, lines of discussion, references to certain items, products, people, policies, etc. that are simply disallowed in the forum.
It is extremely depressing and frustrating to spend however long it takes -- and it takes ME a long time, as I have a 60-year-ingrained tendency towards verbosity -- to ask and post a question or message, only to have the message never even posted to the forum, but, without any sort of consultation with me so that I may learn from, and correct, my errors, uncaringly consigned to the illimitable void by hands to whom there is no appeal or orison.
It seems unfair.

Line-level audio recording via headset jack

I'm interested in using my Touch to run the "FourTrack" app - but want to record line-level rather than via a mic. (I'm not very technically minded.)
Is there any reason that I can't use an "iPOD VIDEO / HIFI CABLE, 3.5mm RCA to AUDIO VIDEO AV TV Cable for IPOD Video Photo Nano Mini" (as it is described on Amazon) and use the video RCA plug (the yellow one) for my audio in.
(I guess that the touch expects a mic-level input, rather than line-level. I'll be getting a DI Box if that assumption is correct.)

Hi PeterPa,
Welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.
You could also try clearing the Smart Connect application to see if this app based,
Menu > Settings > Apps > All > Smart Connect > Clear Data
let us know how you get on.
- Official Sony Xperia Support Staff
If you're new to our forums make sure that you have read our Discussion guidelines.
If you want to get in touch with the local support team for your country please visit our contact page.

W520 audio line in / line out

Whenever i connect a 3.5mm cable with the line in/out it gets interpreted as a line out (headphone) cable. The line in gets displayed as not connected. Is there any way of switching the interpretation? I don"t need line in + out simultaneously, but i"d really like to use the line in as well

Does any one know how to setup or switch Audio line-in port in "W520 conexant 20672 in Windowns 7 64 bit"?
Does W520 Microphone jack support 3.5 mm audio in from iPod or any other sound device.
I have Mac book pro, they can do switch between Internal Microphone to Audio Line in.
How come this expensive W520 laptop can't do this?
Lenovo service group people doesn't know how to do it. Please help fix this problem that very appreciated.

Connecting to audio line out freezes QuickTime!

Today for the first time I tried plugging my Apple speakers into the line out socket of my new Mac Pro instead of the headphone socket, only to discover that this prevented any QuickTime files from playing. It also caused FCPX to freeze up. Has anyone else experienced this strange phenomenon?
This was after installing the latest Yosemite update, but I cannot say whether this made any difference as I did not try this socket previously.

The Mac Pro (Late 2013) has two distinct audio ports. Audio devices you connect to the port will appear in System Preferences > Sound > Output.
Audio out: The left audio port with a speaker icon is a 1/8" stereo minijack for audio line out. It can use analog audio and digital S/PDIF fibre optic cables. Note that this port does not support headsets or microphones.
Headphone port: The right audio port with a headset icon is a 1/8" stereo minijack for headphones. When you plug in headphones to this port, sound is redirected from the internal speakers to the headphones. If the headset contains a microphone, it will appear in System Preferences > Sound > Input.
As with handling audio processing errors on a per-application basis, you can try toggling some audio format and input/output device settings in the Sound panel of System Preferences, or using the Audio MIDI Setup utility that is in your Applications > Utilities folder.
If this does not work, then you may need to reset the audio daemon, which can be done by rebooting your system; however, this may not be desired if you are in the middle of a workflow and would prefer to keep your system operating. In these cases, you can manually reset the audio daemon, by simply forcing it to quit. This can be done by opening the Terminal utility and running the following command: sudo killall coreaudiod

Faulty audio line out

The audio line out on my G5 dual-core has stopped working. There is a tiny amount of output, but not enough to drive the speakers. The headphone jack in front works. Does this mean the sound card is bad? The machine is less than one year old - should I take it somewhere to be repaired? Does the sound from the headphone jack come from the same sound card?

Yes, I am using powered speakers.

Problems with audio line out jack

When I connect the headphones in the audio line out inmediately change to "Digital out" and I don´t listen nothing, but when the headphones is unplugged I hear the music through the internal speakers normally. What can I do about? Thanks.

I need to change the logic board? or only the audio line out jack can be replace?

Audio line level out

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