As far as I remember the Redbook standard has always been 2v.
Just look at the first players from Sony/Marantz/Philips.
EG: Sony CDP-101 Marantz CD-73 etc.
They all have 2v output spec, which is all that's needed to drive the majority of poweramps from yesteryear or today into clipping.
All this gain with preamps today, is a left over from the days of vinyl with low gain phono, step ups, and head amps, when you needed some extra gain.
Today digital sources, including phono stages have 2v and over output and that's all needed with a passive pre or unity gain buffer to send an amplifier into full clipping, so why the extra gain??
I keep coming back to Nelson Pass's statement below.
"We’ve got lots of gain in our electronics. More gain than some of us need or want. At least 10 db more.
Think of it this way: If you are running your volume control down around 9 o’clock, you are actually throwing away signal level so that a subsequent gain stage can make it back up.
Routinely DIYers opt to make themselves a “passive preamp” - just an input selector and a volume control.
What could be better? Hardly any noise or distortion added by these simple passive parts. No feedback, no worrying about what type of capacitors – just musical perfection.
And yet there are guys out there who don’t care for the result. “It sucks the life out of the music”, is a commonly heard refrain (really - I’m being serious here!). Maybe they are reacting psychologically to the need to turn the volume control up compared to an active preamp."
Cheers George
Just look at the first players from Sony/Marantz/Philips.
EG: Sony CDP-101 Marantz CD-73 etc.
They all have 2v output spec, which is all that's needed to drive the majority of poweramps from yesteryear or today into clipping.
All this gain with preamps today, is a left over from the days of vinyl with low gain phono, step ups, and head amps, when you needed some extra gain.
Today digital sources, including phono stages have 2v and over output and that's all needed with a passive pre or unity gain buffer to send an amplifier into full clipping, so why the extra gain??
I keep coming back to Nelson Pass's statement below.
"We’ve got lots of gain in our electronics. More gain than some of us need or want. At least 10 db more.
Think of it this way: If you are running your volume control down around 9 o’clock, you are actually throwing away signal level so that a subsequent gain stage can make it back up.
Routinely DIYers opt to make themselves a “passive preamp” - just an input selector and a volume control.
What could be better? Hardly any noise or distortion added by these simple passive parts. No feedback, no worrying about what type of capacitors – just musical perfection.
And yet there are guys out there who don’t care for the result. “It sucks the life out of the music”, is a commonly heard refrain (really - I’m being serious here!). Maybe they are reacting psychologically to the need to turn the volume control up compared to an active preamp."
Cheers George