Introduction: AMP MODELS
1•3
AMP MODELS
The TubeTone process allowed Line 6 to create software Amp Models modeled after a
collection of amplifiers recognized by guitarists the world over as true “tone classics.”
We got these amps together, cranked ’em up, and had a look at the electronic data
generated by the tubes, transformers, capacitors, plate and grid voltages, tone control
curves – and the whole mess of components and elements unique to each amplifier
design. This research led to the creation of TubeTone software Amp Models. These
Amp Models were tweaked up through careful A/B listening comparisons to the amps
that inspired them, with an ear open for the effects of different volume levels and
settings of the originals’ tone and gain controls. The gain and equalization
characteristics of the modeled amps were carefully measured so that changes to amp
knobs on the models would mirror the effects of these changes on the originals as
closely as possible. We’re talkin’ major attention to detail here. Tone control center
frequencies, slopes, and cut/boost range were painstakingly analyzed, and we also
carefully attended to the effect of presence circuits, “bright” channels and switches,
and other model-specific factors. Not only that, but since these old amps had highly
interactive circuits, we paid careful attention to the way that the setting of one knob
will change the way that another knob on the amp will behave. All in an effort to
make our Amp Models as much like the amps we modeled as possible. The resulting
TubeTone Amp Models are the foundation of the AX2 guitar amp. Now, then. Here
are a couple of things we want to be crystal clear on:
1. The TubeTone modeling process is a 100% digital software-based technology
exclusive to Line 6.
2. TubeTone is not sampling, nor is it solid state; no special guitar, pickup, or
cabling is needed.
So, now that you know what’s in store, it’s time to experience the TubeTone Amp
Models for yourself. Grab your favorite axe, plug in to the AX2, and join us for the
AX2 Grand Tour....
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