Synergy Bogner Uberschall Preamp Module – Legendary High-Gain Power

With the Synergy Bogner Uberschall preamp module, aggressive authority and the signature clarity of Bogner’s famed Uberschall amplifier are available for any modular Synergy setup. Extended-range players, metalheads, and studio professionals will benefit from the unmistakable punch and depth of the original amp in a compact, flexible design. Created by Reinhold Bogner, the Uberschall circuit is a sought-after solution for wall-shaking distortion, precise note separation, and versatility spanning both modern and classic heavy genres. Synergy’s modular platform brings this sound within easy reach—no need for a bulky or expensive full-sized head.

What Sets the Uberschall Module Apart

Built for uncompromising high-gain tones, the preamp features two fully independent channels, modeled after "Twin Jet" and "Super High Gain" circuits. Players can fine-tune input tube bass response using the three-position cathode select switch, and the pre-EQ, Boost, and Cut toggles unlock additional tonal sculpting options rarely seen in this format.

High-Gain Engineered Flexibility – Technical Details

Separate controls for each channel enable a wide range of voices, from muscular crunch to searing lead. Use dual 3-band EQs, Gain and Volume controls per channel, plus mini toggles for Cut and Boost, to tailor your sound in any environment.

• Channels: 2 (Twin Jet, Super High Gain) — move between modern crunch and saturated distortion at a moment's notice
• Preamp Tubes: 2 x 12AX7 — authentic tube-driven dynamics and response
• Adjust bass and input gain for any guitar or playing style with a three-position cathode select switch

Fine-Tuned Player Controls – Shaping Your Signature Sound

Shape tones for rhythm or lead with individual EQ and gain/volume controls per channel, while the Pre-EQ, Boost, and Cut toggles offer extra sonic flexibility. With this, the Uberschall module covers tight, percussive modern metal, fluid soloing, and thick classic rock tones alike.

• Independently sculpt lows, mids, and highs for each channel with a dedicated 3-band EQ
• Mini Switches: Pre-EQ, Boost (Red), Cut (Blue) — instantly modify attack and gain structure
• Compatible with Synergy preamp docks and legacy Egnater/Randall single-channel hardware

Practical Design & Modular Power – Pro-Level Integration

Installation is rapid—modules swap in seconds, letting you customize your rig for stage, studio, or home. Direct pairing with Synergy SYN-1 or SYN-2 docks is supported, and the design interfaces seamlessly with modular systems for flexible setups.

• Dimensions: 140 mm (L) x 178 mm (W) x 38 mm (H) — compact and fits standard Synergy slots
• Despite its portable 0.45 kg metal chassis, the construction remains rugged for professional use
• Works with Synergy SYN-1 tabletop, SYN-2 rack, and SYN-50 heads

Brand & Product Story – Bogner Legacy in a Modern Platform

Bogner Uberschall, crafted by Reinhold Bogner, set the benchmark for powerful guitar tones among professionals, known for its ability to deliver massive, clear distortion without losing note definition. The Synergy module distills this history into a modular solution, granting guitarists access to the revered Bogner sound with greater flexibility. The collaboration between Bogner and Synergy brings the spirit of this high-gain classic to contemporary modular rigs for today's musicians.