iTunes/computer feeding an external DAC: The iTunes Equalizer - diyAudio
Go Back   Home > Forums > Source & Line > PC Based
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

PC Based Computer music servers, crossovers, and equalization

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 22nd February 2010, 07:00 PM   #1
NV&H is offline NV&H  United States
diyAudio Member
Join Date: Feb 2005
Location: Charlotte, North Carolina
Default iTunes/computer feeding an external DAC: The iTunes Equalizer

I have an external Musical Fidelity (V-DAC) USB DAC that's fed from a Mac computer via iTunes. I've noticed that the equalizer within iTunes can still be turned on running this way. I was very surprised by this because I just assumed that the equalizer operated in the analog domain. And I assumed that, for "purity of signal" reasons, this feature would be locked out when a lossless digital stream is being pulled out.

I don't yet have the speakers to fully evaluate the quality of the equalizer, so, can you share your opinions about any signal degradation caused by the equalizer operating this way?
  Reply With Quote
Old 26th February 2010, 04:43 PM   #2
diyAudio Member
Join Date: Jul 2006
Send a message via ICQ to Crossblade Send a message via AIM to Crossblade Send a message via MSN to Crossblade Send a message via Yahoo to Crossblade
Do you need it? Of course it can work (as can the in-iTunes volume control), but better don't use it
  Reply With Quote
Old 26th February 2010, 05:19 PM   #3
diyAudio Member
Join Date: May 2008
no application will comunicate directly with the dac i think, as far as i know all audio apps on mac realy on the coreAudio which then routes the signal to the hardware devices selected. for sure it's how itunes works.

compared to a 64bit linear phase VST equalizer i found that it is really degrading... also on it's own, before i was able to compare it seemed to suck life out of the drivers, but then maybe it was me doing wrong-exagerate equalization. to route the signal to a VST equalizer you need something like:

the free (i don't know how to use it) Jack OS X - a Jack implementation for Mac OS X
or the shareware very easy Rogue Amoeba | Audio Hijack Pro: Record Any Audio On Mac OS X

then just use the VST you prefer, there is one 32-bands built-in osx for pro-audio but to me it didn't sound as good as a 64-bit ultra-powerful-presets shareware i can't recall the name (there is a thread about DSP in the fullrange section of this forum)

also as suggested i would keep the digital volume control from itunes at its 100% position
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
iTunes/computer feeding an external DAC: The Equalizer NV&H Digital Line Level 14 6th August 2010 03:34 PM
SACD quality itunes? cbdb Music 2 24th February 2010 10:07 PM
No more HDCD with iTunes Aramys Digital Source 20 5th May 2008 10:04 AM
iTunes Ripping Question serengetiplains Digital Source 0 11th January 2006 04:27 PM

New To Site? Need Help?

All times are GMT. The time now is 09:29 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2