What is a pre pro?

[luxlis]

New to this. Thanks in advance for answering.

 

[Lordoftherings]

A Pre/Pro is a Receiver without the Amp section.

* Also, it sometimes includes the Tuner section, and sometimes does not.

 

[mtrycrafts]

New to this. Thanks in advance for answering.

In the old days or analog it would be called a preamp.
Today, it has all sorts of sound processors associated within so the name.

 

[Lordoftherings]

^ Thanks for the distinction.

* My guess was that the OP was asking in reference to a modern A/V Surround Receiver.
Then, in that case, a Pre/Pro is as I mentioned before.
So, a preamp more precisely, with processing for Surround sound and of course, Video Processing. Only the multichannel power amp section is missing.
And like I already said, the Tuner section nowadays is also included, so is all type of digital tuners accessibility, plus Ethernet and Internet as well, Ouf!
That is a lot of Processing power indeed.

** It's true that in the past, in the world of Stereo, a preamp did not have a
Multichannel Surround Processor, only Stereo, and still not even (in the old days).
Also, the Tuner section was missing (that was the norm, more than the exception).

 

[agarwalro]

New to this. Thanks in advance for answering.

Pre = Pre-amp, Pro = Processor.

The pre-pro serves the following functions:

1) Pre: Act as switch connecting all inputs to output (audio or video)
2) Pre: Bring analog signal to line level for amp input
3) Pro: Perform Digital to Analog audio conversion
4) Pro: Apply any changes to sound or video when compared to source. Eg. equalization or bass management, video noize reduction.

So you can have Audio only pre-pro (sometime called simply pre-amp) used with a power amp, Video only pre-pro, a pre-pro that does audio and video and finally the Audio Video Receiver (AVR) is a single chassis containing all the audio and video pre-pro and the power amplifier.

 

[CraigV]

The “pro” part will also decode surround sound material. Depending on the age and cost, this can include all the latest codecs, like Dolby TrueHD & DTS Master. It then steers the sound to the appropriate amplifier channel to be amplified. Some people will contend that this is the means to get the best sound from a system, but using a receiver that has pre-am outputs and a good external amp (like an Emotiva) will afford the listener more head room, and an overall boost in sound quality.