Differential Signal Amplifiers.

[RiottStarr]

Can we get some examples of these? How can we tell by looking at an amp specs online?

[Kyblack76]

You just talking about Balanced, VS UN Balanced?

Balanced ive used was my RF 2500bdcp and T1000.4ad, my Dc amps are also Balanced.

That said, my HU doesnt pack a balanced sig, so... .meh...

[RiottStarr]

Just curious? I just watched a D'Amore video about differential and single ended amps/rca's. Says that differentials are higher end amps.

[RiottStarr]

Anyone else?

[Wicks]

You won't be able to tell from the specs unless they specifically mention differential inputs.

Some companies advertise it, some don't.

They are generally used in higher end amps since there is more circuitry involved which filters out common mode noise and gives you a larger/cleaner input signal.

Any reputable company should have a technical support team that can tell you if their product supports a differential signal.

If they can't or won't...walk away.

Also keep in mind that your device (HU) sending the signal MUST output a differential signal for the noise cancellation to work.

[RiottStarr]

Soo, that brings me to the next question. what head unit companies provide this feature? High end Pioneers? Alpine?

[Wicks]

Hmm, none that I can think of offhand.

There are solutions though.

Fosgate makes a Line Driver module that will output differential signals.

http://www.rockfordfosgate.com/products/details/rf-bld

Or you can get an external processor (360.3) that does the same.

Not that many people like buying extra equipment but there are options.

[RiottStarr]

but, are the options worth it? is it safe to assume yes?

[Wicks]

If you have noise that you need to get rid of then they could definitely be worth it.

If your (unbalanced) signals are clean and you you're happy with it then no its probably not worth it, unless you want some of the other features of the device.

[RiottStarr]

New question!! Are Sundown amps single ended or Differential Input?