Bergantino Forte Ultra D

Bass tone means different things to different players—but one thing is clear: capturing the true essence of a real tube amp is no easy feat. While distortion pedals and circuits can get you part of the way there, the magic lies deeper—in how the amp compresses, sags, and responds to the player’s touch and the speaker load.

At Bergantino, we’ve meticulously dissected those signature characteristics to deliver all the sonic warmth, richness, and complexity of tube drive—without the downsides. Want that sweet, smooth soft-clip purr? It’s in there. Need some gritty growl to cut through the mix? You’ve got it. Craving that glorious, saturated sound of a tube amp pushed to its absolute limits? The Forté D delivers it in spades.

And the best part? This drive stays tight and musical—whether you’re adding just a touch of harmonic sparkle or pushing into full-blown saturation. With a single, intuitive knob, we’ve distilled decades of tube amp behavior into pure, effortless tone.

Bergantino’s new Parallel Dynamic Circuitry™ builds on all of the best attributes of our compression wizardry found in some of our other products and optimizes it for bass, automatically producing a sweet, note-thickening magic.

This new technology integrates seamlessly with the new Ultra Drive circuit, allowing for a very touch sensitive response that inspires, not only to achieve that pushed tube amplifier tone, but get that wonderful FEEL of total interaction between the player and amp.

Forté D features a custom tuned, yet powerful amplifier module and will provide up to 800W RMS power depending on the speaker load. At 8Ω the Forté D will provide 350W RMS, @ 4Ω this is increased to 700W RMS, while at a 2 or 2.67 Ω load the power output goes to 800W RMS.

Speaker impedance of the connected cabinets can also be matched from the front panel, this permits for optimal power transfer and allows the Forté D to function safely right down to a 2-ohm minimum load.