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* EDIT: Up-to-date information is available in Yek's Guide to the Fractal Audio Amplifier Models *
Euro Uber: based on Bogner Uberschall
The Uberschall was one of the early really, really high-gain amps. Reinhold Bogner himself calls it “Armageddon in a box”. The amp has got a clean channel but that’s not what we’re here for. The ultra high-gain channel is the unique selling point of this amp. And that’s what we have access to as a model.
The Uberschall is around 100 watts (EL34, KT88 or 6L6 power tubes) and it specializes in heavy grinding lows and insane gain. It has a single input. I believe that the modeled Uberschall is the original amp (with EL34s), not the later “Twinjet” version, but that really doesn’t make much of a difference.
Bogner:
The controls on the high-gain channel are: Gain, Bass, Middle, Treble, Presence, Master.
The Uberschall has an enormous amount of bass, which can be overpowering. Try the Cut switch in the model if the bass is too booming.
Also very important: the Middle control. Turn it to hear the impact on the tone. Manual:
Cliff:
The tone of the Uberschall is also available as a standalone Bogner pedal. In a similar fashion you can turn the Amp block into a pedal, by disabling the power amp section of the amp model (turn down Supply Sag until it says: “P.A. off”).
The accompanying cabinet is Bogner’s Uberkab, a 4x12 with V30 and T75 speakers. These are available as stock cabs.
https://www.youtube.com/watch?v=3E-ghBgnjD0
Euro Uber: based on Bogner Uberschall
The Uberschall was one of the early really, really high-gain amps. Reinhold Bogner himself calls it “Armageddon in a box”. The amp has got a clean channel but that’s not what we’re here for. The ultra high-gain channel is the unique selling point of this amp. And that’s what we have access to as a model.
The Uberschall is around 100 watts (EL34, KT88 or 6L6 power tubes) and it specializes in heavy grinding lows and insane gain. It has a single input. I believe that the modeled Uberschall is the original amp (with EL34s), not the later “Twinjet” version, but that really doesn’t make much of a difference.
Bogner:
“Uberschall is the German word for Super Sonic and we designed this amp primarily for extreme, heavy and aggressive styles of music. Detuned or baritone guitars crave this amp.
We unleash mayhem with the super aggressive high gain channel with gain, bass, middle, treble, volume and presence controls. You think you've heard BASS before, no way, the UBERSCHALL can crush on demand. Even with extreme gain and volume this channel stays massively focused and resists mushing out from the heaviest right-hand attack. Have some crazy effects? Put them through the tube buffered effects loop. Power comes from a throaty EL34 output section.
Our UBERKAB is perfectly matched for the thunderous UBERSCHALL. This 4x12" straight front speaker cabinet features a black front speaker grill with silver piping and a combination of front loaded Celestion Vintage 30's and G12T75's wired at 16 ohms. This combination unleashes the aggressiveness of the UBERSCHALL amp, plus helps to maximize the low end and give great cutting power to the mids and highs. Our standard Bogner 4x12" cabinet, with Vintage 30's, also sounds great with the UBERSCHALL but we wanted to offer a cabinet that was fine tuned for the flame-throwing UBERSCHALL."
The controls on the high-gain channel are: Gain, Bass, Middle, Treble, Presence, Master.
The Uberschall has an enormous amount of bass, which can be overpowering. Try the Cut switch in the model if the bass is too booming.
Also very important: the Middle control. Turn it to hear the impact on the tone. Manual:
“The "Midrange" control is very interactive with all the other tone controls; you can go from a hollow scooped-mid setting to an aggressive in your face and on your throat kind of intensity.”
Cliff:
"People think Bogners are dark but they really aren't. The reason they seem that way is the pot tapers. Most people assume knobs should be set somewhere around noon. If you do this on a Bogner it's like turning the treble way down on a Marshall. Close your eyes and adjust the tone controls with your ears. Don't be afraid to turn them way up or way down." source.”
"Human nature is to put the knobs near noon. We are reticent to deviate much from noon. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. A prime example are Bogner amps. Everyone says "Bogner amps are dark". No they aren't. But he uses a Log10A taper for the treble pot. It's a standard Marshall tone stack. Usually a linear taper pot is used for the treble. The treble knob at 5.0 (noon) on a Bogner is equivalent to the treble knob at 1.0 on a Marshall. People put the knob at 5.0 and go "wow, this amp is dark". No it isn't. If you turned the treble up to 8 or 9 it would sound a lot like a Plexi but humans are reticent to turn the knobs to extremes. Amp designers know this and exploit it to give their amps a "signature sound"."
"The feedback circuit is responsible for the behavior of the Presence and Depth controls. Certain Bogners and Diezels have a unique type of feedback circuit. There are no new parameters and nothing to do except twist the Presence and Depth knobs to your desired tone. Note that an Uberschall doesn't have a Depth knob. The default Depth value when you select the Euro Uber model is equivalent to the amp's fixed depth circuit."
The tone of the Uberschall is also available as a standalone Bogner pedal. In a similar fashion you can turn the Amp block into a pedal, by disabling the power amp section of the amp model (turn down Supply Sag until it says: “P.A. off”).
The accompanying cabinet is Bogner’s Uberkab, a 4x12 with V30 and T75 speakers. These are available as stock cabs.
More IRs of Bogner cabs are available in Cab Pack 9 and Cab Pack 14 (which includes Cab Pack 5). OwnHammer also has a large collection of Bogner IR libraries.
https://www.youtube.com/watch?v=3E-ghBgnjD0
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