GeoTubaEb
GeoTubaEb gives GeoShred Studio its brass floor: a physically modeled Eb tuba whose breath-driven tone runs from a soft pedal tone to a full, round blast. The continuous pitch surface carries the slow slurs and sustained foundation lines that give a brass ensemble its weight, with every note driven continuously by pressure and gesture.
The 20 factory presets include Diatonic and Arp as well as piano, uniform, and Janko keyboard layouts. Works with MPE controllers, wind and breath controllers, and GeoShred Control, a free iPhone and iPad companion app that delivers a multi-touch expressive surface for live performance.
GeoTubaEb runs inside GeoShred Studio, with a license included for customers who do not already own one.
GeoTubaEb – Physically Modeled Eb Tuba for GeoShred Studio
FROM A SOFT PEDAL TONE TO A FULL, ROUND BLAST, THE BRASS FLOOR UNDER CONTINUOUS CONTROL
The lowest rows of GeoShred Studio's continuous pitch surface belong to GeoTubaEb, where the Eb tuba's deep, wide voice sits under the hand. Pressure governs the breadth of the tone: a light touch gives the soft, rounded pedal tone that underpins a chorale, and driving into the surface brings the full, round blast of a brass-band tutti, modeled as one continuous event. Slow slurs between foundation notes are a finger moving along a row, and a solo line's vibrato follows the hand's small movements. The integrated FX rack adds a hall, or AmpCab weight for contemporary textures, and Audio Modeling's SWAM engine simulates the widely conical bore and large bell beneath the surface.

What's Inside GeoTubaEb:
- Continuous pitch surface across the Eb tuba's compass, with slurs and portamento on every note and the foundation register under the lowest rows
- Breath-driven dynamics from a soft pedal tone to a full blast, with tonal breadth, attack, and vibrato responding to pressure and gesture
- 20 factory presets including Diatonic and Arp, plus piano, uniform, and Janko keyboard layouts as alternatives to the isomorphic grid
- Integrated GeoShred FX rack including EchoMT, Reverb, and AmpCab, from orchestral hall to weighted contemporary low brass
- MPE controller, wind and breath controller, and GeoShred Control companion app support
- SWAM physical modeling by Audio Modeling: widely conical bore, deep cup mouthpiece, and lip-driven air column simulated in real time
Deep and Wide: The Eb Bass Tuba
Deep, round, and broad: the Eb tuba is the bass tuba of British brass bands and British orchestral playing, pitched a fourth above the BBb contrabass. Its bore widens steadily to a broad bell, and a deep cup mouthpiece sets a wide column of air in motion. It is agile for its size, at home in a walking bass line or a sustained pedal point, and its pedal register extends below the normal compass. GeoTubaEb models that air column so the breadth of the tone follows the intensity of the breath.
Foundation Lines, Pedal Tones, and Keyboard Layouts
A tuba part is mostly about weight and timing: the root on the downbeat, the pedal point that holds a chord progression together, the slow slur that moves the harmony. In GeoShred Studio each of those is a physical gesture. Press lightly for a pedal tone that sits under the mix, press through a phrase for the swell that lifts a brass chorale, and use a lateral drift along the row for the glissando that ends a march. Presets named Arp and Diatonic offer arpeggiated and scale-based starting points for repeating bass figures and in-key foundation lines.
Because bass lines are often played from a keyboard, GeoTubaEb also ships with piano, uniform, and Janko keyboard layouts alongside the isomorphic grid, with the same pressure and gesture response on every surface.
GeoShred Studio and GeoShred Control
GeoShred Studio is moForte's professional desktop instrument platform, running as a VST3, AU, or AUv3 plugin inside your DAW or as a standalone application. Its multi-row continuous pitch surface and native pressure response give a low brass instrument what it needs most: dynamics that follow the hand in real time, and pitch that can slur between notes without a break. Wind and breath controllers connect directly, and MPE hardware integrates natively.
GeoShred Control pairs with GeoShred Studio over USB or wireless MIDI, delivering a free multi-touch iOS surface for live performance alongside hardware controllers.

GeoSWAM vs. SWAM Tuba (Eb)
GeoSWAM instruments run inside GeoShred Studio and are built around GeoShred's expressive performance surface, including its multi-row grid, continuous pitch layout, pressure response, gesture control, and integrated FX rack. The instrument's core parameters are curated and mapped for immediate, real-time musical control within the GeoShred environment.
SWAM Tuba (Eb) is Audio Modeling's standalone instrument and plug-in, included in SWAM Horns and Tubas, which can operate independently or inside a DAW. It provides deeper access to advanced model parameters and detailed customization within its own interface.
Both use the same underlying SWAM physical modeling technology and are capable of highly expressive performance. The difference lies in interface design, parameter depth, and workflow architecture.
They are separate products developed independently, and there are no upgrade or crossgrade paths between the two product lines.
GeoShred Studio Required. GeoTubaEb runs inside GeoShred Studio. A GeoShred Studio license is included with purchase for customers who do not already have one. Existing GeoShred Studio owners can use their current license to run GeoTubaEb.
FAQ
What is GeoTubaEb?
GeoTubaEb is a physically modeled Eb tuba powered by SWAM technology from Audio Modeling, running inside GeoShred Studio. It delivers the tuba's deep, round foundation voice with breath-driven dynamics from pedal tone to full blast, continuous pitch control, pressure-responsive expression, and 20 factory presets across GeoShred's performance surfaces.
Do I need GeoShred Studio to use GeoTubaEb?
Yes. GeoTubaEb runs inside GeoShred Studio, and a GeoShred Studio license is included with your purchase for customers who do not already own one. If you already own GeoShred Studio, you can use your existing license to run GeoTubaEb.
What's the difference between GeoSWAM and Naada instruments?
GeoShred offers two families of physically modeled instruments: GeoSWAM and Naada. While both deliver deeply expressive performance through GeoShred's touch surface and MPE support, they come from different modeling technologies and are designed with different musical goals in mind.
GeoSWAM instruments are developed in collaboration with Audio Modeling and are closely related to their acclaimed SWAM instruments. These models focus primarily on Western orchestral and acoustic instruments such as brass, woodwinds, and strings. GeoSWAM instruments are designed for highly detailed expressive solo performance and operate as monophonic instruments, just like their real-world counterparts.
Naada instruments are developed by AccelMatrix and emphasize a broader palette of global instruments, including instruments such as Bansuri, Sitar, Veena, and many others alongside selected Western instruments. In contrast to GeoSWAM, Naada instruments are polyphonic, making them ideal for chords, layered textures, and rich ensemble-style performance.
In short:
GeoSWAM: monophonic, orchestral focus, highly detailed solo performance
Naada: polyphonic, broader global instrument palette, ideal for chords and layered textures.
Both instrument families share the same expressive GeoShred performance environment, giving players an intuitive and powerful way to perform physically modeled instruments.
Do GeoSWAM and Naada instruments use the same parameters?
No. Because the two families use different modeling technologies, each instrument includes its own parameter set tailored to its physical model. These parameters control aspects of the instrument's behavior and performance response.
What controllers work with GeoTubaEb?
GeoTubaEb works with MPE controllers, wind and breath controllers, the free GeoShred Control iOS companion app, and standard MIDI keyboards when paired with a breath, expression, or foot controller.
Is GeoTubaEb monophonic?
Yes. Like all GeoSWAM instruments, GeoTubaEb is monophonic, mirroring the behavior of its acoustic counterpart. For polyphonic performance, GeoShred Studio offers the Naada instrument family, which supports chords, layered textures, and ensemble-style playing.
Can I play GeoTubaEb from a keyboard-style layout?
Yes. Alongside GeoShred's isomorphic grid, GeoTubaEb includes piano, uniform, and Janko keyboard layout presets, each with the same breath-driven pressure and gesture response.












