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Post subject: How is power amp distortion incorporated into these models?
Posted: Tue Apr 26, 2011 6:54 am
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Another thread got me thinking about this. How do these amp models incorporate power amp distortion? It doesn't seem to be affected by Master Volume settings like it is on an actual tube amp...and it shouldn't be...one of the benefits of digital modelling is that you can get those glorious cranked amp tones at any volume.

So, how do they do that...is it all controlled by the gain, so that as you turn up the gain control, you increase both preamp and power amp gain on that particular model? If so, then they basically operate like an old non-master volume amp. In which case, the master volume on the model is actually an more of attenuator? Does that make sense?

What do you think?


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Post subject: Re: How is power amp distortion incorporated into these mode
Posted: Tue Apr 26, 2011 11:24 am
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There is a Master or Volume setting for every sound model / preset. That would be the place where some crispy power tube distortion should occur. I haven't noticed that effect anyhow..


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Post subject: Re: How is power amp distortion incorporated into these mode
Posted: Tue Apr 26, 2011 3:15 pm
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Joined: Wed Apr 13, 2011 11:22 pm
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Well, if you look at the Advanced Amp settings, you'll notice that on some amp models there will appear an extra Master Volume knob to the left of the Noise Gate knobs. This leads me to believe that the Volume knob on models that don't in reality have a master volume like the Deluxe, is a Preset volume control. Amp models that do have a master volume will have their Preset volume control in the Advanced Amp settings. In this way, the model allows you to induce "power tube saturation" while still having control over the preset's actual volume. Nice! Interestingly, two models have a "Blend" control in place of the Master Volume - the Bassman and the British 70's. I've tried messing with it and the effect is pretty subtle and am not really sure what it's doing. Anyone have any clues?

Just my opinion but this, I think, is so far the simplest, most musically useful and practical approach to amp modeling that I've seen. To me, this is the combination of tools that I've always wanted in a real amplifier. The fact that it all starts at $100.00 is just unbelievable. Yes, it would be nice to have more DSP for more simultaneous effects but I'm glad that the emphasis was on amp model control instead of just more features.

We don't need another GT-10 or Line 6 HD 500 but the Mustang's guts in a pedal form would be a total wake up call to Boss, Line6, Vox, etc. But that's just my opinion.

O.


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