Amp Model Section - Korg SV-1 Editor Manual

34 – The effects in detail | Amp Model section
A M
MP ODEL SECTION
It wasn't easy to select the amps to model, since, there's a plethora of great
sounding amps to choose from. After countless hours of searching, discussing
and listening sessions, we came out with a top list. As you're about to discover,
the ones we went with are not only the cream of the crop but also offer up the
widest possible array of the greatest tones.
The operating mode of the preamp and power amp, the response of the tone
controls, and their placement within the circuit will change depending on the
type of amp you select here, precisely replicating the exact gain and tonal charac-
ter of the original amp. The all-important power amp stage (class A or AB) and
negative-feedback circuit (or lack thereof) are also carefully simulated.
About the Gain and Volume knobs
SV-1's amp models provide two knobs that affect the volume (or gain): PRE
VOLUME (or DRIVE) and AMP VOLUME. Each control has its own specific
job, and the sound of a particular amp model can vary over an amazingly wide
range just depending on the settings of these knobs. In addition, the POWER
ATTENUATOR in the cabinet section is placed between the output of your amp
and the input of your speaker cabinet. A PROGRAM LEVEL knob in the cabinet
section controls the level of the final mix and allows you to balance all your pre-
sets to each other.
As in how the original amps work, we have made the relationship between
preamp and power amp work in the same way. Therefore to obtain truly authen-
tic tones please use the Pre/Drive Volume control in the same way. Low settings
of Pre Volume will tend to produce more of a preamp distortion, while high set-
tings will add the distinctive distortion and warmth of the Valve Reactor.
NOTE: Setting the Pre Volume to high settings will result in heavy distortion, and is
not recommended.
Tube Talk
Brits call 'em valves while their US cousins call 'em tubes... as the saying goes:
England and America are merely two countries divided by a common language!
Anyway, call 'em what you will, these wondrous glass bottles lie at the tonal heart
of each of our models. As all the amps we've modelled hail from one of the two