Re: Cabinet impulses?
Start with "what is a preamp". It's in general an object that is
used between the source and the amp. It's usage is for the
modelling of the source signal (for example add distortion,
make equalization) and set the signal level. You know that if
you give too much signal into the computer (or in general
an audio unit), the sound can distort. In the opposite case, the
signal can be too low so with a preamp you can up its level.
The recording of instruments with high impedance output, like
guitar and basses, need a "preamp" for match the input impedance
of audio units (like mixers or sound cards. Some preamps work like
that or it can be done by a D.I. Box (direct injection box)
that match the output impedance of the guitar with the input
People that use their amp, want to use the preamp section of
it for modelling the sound. Some guitar amplifiers have a "line out"
or "rec out" that have the correct impedance for recording. Who
don't have this output, can use the send but a D.I. Box is needed.
You can consider your DS-1 a preamp, but it's not a D.I. Box, so you
need it for recording the guitar better. What happen if the impedance
doesn't match? The input of mixer/sound card work as a filter that
cut high frequencies and high harmonic frequencies, so it alter the
natural sound of your guitar.