Manufacturers are constantly changing the taper of the pots in their amps. For example a 1M, 10A pot would be 10% of its value at "noon", or 100K. 30A) denotes the value of the pot at mid rotation. Potentiometers come in a variety of tapers: linear, 30A, 20A, 10A, etc. Now your 1M pot that should be 500K at halfway is only 360K. If it's linear it's midpoint should be 400K but could be as low as 360K. So if you have a 1M pot it could be as low as 800K. On top of that the midpoint accuracy can be another +/- 20%. That's huge and that's end-to-end accuracy. All our old reference amps are given a thorough checkup prior to modeling with any out-of-tolerance parts replaced.Ī typical consumer potentiometer has a tolerance of up to +/- 20%. If your amp is old chances are it doesn't sound like it did when it was new. Over time the value of these components drifts. They typically have tolerances of 10% or more. The components used in tube amps are low-cost, consumer-grade parts. If a model doesn't sound like your version of that amp it won't sound like our reference amp either. "The models in our products are based on our in-house reference amps. Why your amp doesn't sound like Fractal Audio's Amp modeling is part of the firmware but each generation of Fractal Audio's has a name: G3, Ares, Quantum, Cygnus. While Fractal Audio's processors also provide state-of-the art digital effects, the amp modeling is the flagship feature. Most amp models are showcased in the Factory presets page.įractal Audio's progressing modeling techniques are listed in the Firmware Release notes. Yek's Guide to the Fractal Audio Amp Models (PDF) provides additional in-depth information. The same applied to the earlier hardware generations (AX8 vs Axe-Fx II).Īll current amp models are listed on the Amplifier models list page. Many that I can't talk about because they are secrets." There's dozens of other little things like that. We even model esoteric things like the bias excursion in the phase inverter. And this DSP is 2-4x more powerful clock for clock than typical DSPs. The Axe-Fx III dedicates an entire 1GHz DSP to just amp modeling. "We model things that other products simply cannot as it requires more CPU power than available. These were removed to allow the core amp modeling to run on the lower-powered processor." dynamic presence/depth, input dynamic processing, etc. (FM3) "The Axe-Fx III contains various algorithms that allow you to enhance the amp modeling that don't exist on a real amp.
(FM3) "We removed all the superfluous stuff (bias tremolo, dynamic presence/depth, etc.) in order to get the core amp modeling to run on the slower processor." Certain features were removed to allow the algorithms to run including the bias tremolo, input dynamics processing (.)." (comparing the FM3's amp modeling to the Axe-Fx III) "They are the same quality. The FM3 also provides the same amp modeling, but due to its lesser processing power, some features are not available. The FM9 offers the same amp modeling as the Axe-Fx III. The Axe-Fx III is the flagship product, offering the most complete feature set. Read this: Amp and Cab modeling for beginners Fractal Audio's amp modelers The Amp block Available on which products
2.24 Noise, fizz, crackle, sizzle, intermodulation, crossover distortion.2.23 Replicating the sound of Kemper amp profiles.2.18.8 Can you reset a single parameter to its intended default value.2.18.7 Is “Refresh After New FW” the same as a reset.2.18.6 Reset in the editor’s Manage Preset tool.2.18.3 What happens when you reset an amp.2.18.2.2 Because FRACTAL AUDIO changed things.2.18.2 Why would you want to reset an amp.2.16 Settings for FRFR or guitar speaker.2.15 Cut, Bright, Fat and Boost switches.2.13 Authentic or idealized amp controls.2.9 When using a tube power amp (and traditional cab):.2.5 Why your amp doesn't sound like Fractal Audio's.