Headphone Amp to powered speakers

Suddenly i got a hint of connecting my powered desktop T40 speakers to my soundblaster z card headphone
out with amp. Sound/audio play improve a big amount compare to the usual 2v line level output.
What come to my mind is that 2v is very small voltage which can only drive 1m length of line level cable.
Longer than that, quality and performance will drop. While trying out different length/size of 3.5mm line level
cables at the headphone out with amp, i found out that even a reduce in size and length from a thick and 2m
length cable make improvement to sound/audio.

A search on the internet also can find headphone amps that enable connection to both headphone and powered speakers. Anyone has opinions on this and using headphone amp for powered speakers can kindly share it here. Below are a link to some good headphone amps reviewed.

Best Headphone Amps of 2022 | The Master Switch

Consumer electronics has been operating at -10 dBV (nominal reference level at 0.316 volts and maxes anywhere from 1.4-1.6v) for 50-60 years. And the RCA audio cables running from the tape deck to the amp has been 6 foot long as well.

So basically, a whole of lot of technical nonsense.

Expensive junk. Does nothing. Just put bull in front of one of those manufacturers names.

Hello,
Look up USB audio interface, that would be the best way to go, I think. I have that setup, it's a Firewire interface for more channels but the same end result.

sandyt said:

Consumer electronics has been operating at -10 dBV (nominal reference level at 0.316 volts and maxes anywhere from 1.4-1.6v) for 50-60 years. And the RCA audio cables running from the tape deck to the amp has been 6 foot long as well.

So basically, a whole of lot of technical nonsense.

How to you deal with such technical nonsense that seem to put listerner/viewer to work ?
Do you totally avoid audio/video equipments ?

Helmut said:

Expensive junk. Does nothing. Just put bull in front of one of those manufacturers names.

There are more afforable ones, it's a fact that lot of peoples are using headphone through headphone amp, it's just that
i use it on powered speakers.

TidySean said:

Hello,
Look up USB audio interface, that would be the best way to go, I think. I have that setup, it's a Firewire interface for more channels but the same end result.

Do you mean usb speakers or usb dac headphone amp ? I wonder how reliable is usb interface for audio purpose as
it's only has 5v 0.5a 2.5watts output ? And what sort of usb interface audio setup you have ?

sportster said:

How to you deal with such technical nonsense that seem to put listerner/viewer to work ?
Do you totally avoid audio/video equipments ?

This is the first item return from a simple google search --- rca audio cable length.

3.5mm audio cable --- 150 ft
Componsite rca --- 100 ft.

Audio/Video | Cable Distance Limits | ShowMeCables.com

You are talking specifically about powered speakers, so the 3.5mm cable doesn't drive anything. It is only carrying the analog audio data like an ethernet cable carrying digital data. And that analog signal can be carried by 3.5mm cable for 150 feet. You missed the number by a factor 50x.

In the history of audio/video equipments, Sony/Panasonic/JVC/RCA/Samsung... have never supplied you with a RCA cable less than 6 ft in length. You buy a VCR, they give you a 6 ft rca cable to plug into the tv or the a/v receiver. You buy a vinyl record player, they give you a 6 ft cable to plug into the amp. You buy a cd player, they give you a 6 ft cable to plug into the a/v receiver. You buy an amplifier, they give you a 6 ft cable. All the cable connections only transmit the "data", they don't drive anything.

Are you telling us that Sony crippled their own CD player right out of the box because they give you a 6 ft cable?

Somehow, everybody else is wrong except you.

sportster said:

Do you mean usb speakers or usb dac headphone amp ? I wonder how reliable is usb interface for audio purpose as
it's only has 5v 0.5a 2.5watts output ? And what sort of usb interface audio setup you have ?

Hey, I have a Saffire pro 24, not USB but the same thing, it's an audio interface, search that, you will see. Not sure what all this voltage stuff is about, modern kit will handle most things. My interface will switch between instrument and line level audio so it doesn't matter.

It doesn't apply to the discussion because the OP is talking about powered speakers, not driving headphones.

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The world looked like this in the real world.




And every single cable they gave you is 6 feet in length. That's how they designed it. If the OP's theory is right that cable length is too long for the voltage, Sony/Panasonic/JVC/RCA would have changed the voltage, period.

Also the average height of a desk is 30 inches and every single 2.1 computer speakers have you put the subwoofer on the floor. You CANNOT physically connect something from the desktop down to the floor with a 36 inch cable (that's why they all give you a 6 feet cable). So THX must be mad to certify klipsch 2.1 THX computer speakers because the length of 6 foot cable would have destroyed the audio signal.

I skimmed over the part where they said powered speakers i have a habit of skim reading especially late at night. Disregard what i said lol as powered speakers negate the need for an amp and depending on the setup would be dangerous.