Modeler "Input Impedance" -vs- Real Tube Amp "Input Impedance" ?

[HomespunEffects]

In Boise, Idaho it is illegal to fish while riding a giraffe.

 

[ucnick]

If we wanna get nipicky, it's actually technically incorrect.

The correct statement would be "prior to the ADC and the DAC" not "prior to the ADC, not the DAC".

But the point was made clearly enough for a forum such as this, so who's counting...

? Wait, what DAC where? In the input path?

 

[ucnick]

Everything that affects the impedance the guitar sees is "prior to" the ADC, the DSP, the DAC, the output buffering, etc., etc. The only thing that affects the impedance load on the guitar is the first stage of the analog input. It has nothing to do with digitization.
I'm aware that you know this, I'm just trying to keep it simple and unambiguous.

Exactly.

 

[Boudoir Guitar]

? Wait, what DAC where? In the input path?

In the output path; which is after the input path. I was being highly pedantic.

 

[ucnick]

In the output path; which is after the input path. I was being highly pedantic.

No worries. I was just confused by it... sorry bud...

 

[Antipodes]

In the output path; which is after the input path. I was being highly pedantic.

There is a whole lot of digital domain stuff between the ADC and the DAC. Not relevant to this discussion I would have thought - why add this complication other than to obfuscate that you put the wrong initials down initially?

 

[Diary Of An Axeman]

Typical input impedance for a tube amp is 1M and is set by the first grid leak resistor.

I dropped a VHT Valvulator 1 between a 2112 SGS's balanced left / right outputs before going into two Crate Power Blocks.... the headroom is insanely high.
Just experiment with what gear you have and see what kind of results you get. Sometimes something unconventional will have great success for your needs.