SoloDallas SVDS Boost

The SoloDallas SVDS Boost is a one-knob analog boost pedal that reproduces the boost circuit found inside the Schaffer-Vega Diversity System (SVDS), the wireless unit originally introduced in 1975¹². Where a typical clean boost raises volume while leaving your tone alone, SoloDallas says the SVDS Boost does something different: it adds vintage coloration and harmonics, and the maker describes the result as spanning the distance between boost and overdrive¹³.

Its single Gain/Volume knob delivers up to 30dB of boost⁴⁵, and the pedal carries what SoloDallas calls a "Goalpost" EQ, which enhances harmonics and the extreme ends of the frequency spectrum while maintaining the midrange⁵⁶⁴. It sells for $129 street⁷.

From the Schaffer-Vega Diversity System

The circuit inside the SVDS Boost has an unusual origin. The Schaffer-Vega Diversity System was a wireless system introduced in 1975, and SoloDallas derived the pedal from the analog boost it found within that unit¹². The lineage goes back to a quarter-inch headphone jack on the SVDS wireless that was intended for monitoring: players discovered that by connecting their instruments to the headphone output, they could boost their signal by up to 30dB².

SoloDallas, the maker behind the SVDS Boost, describes the pedal as derived from the analog boost circuit found inside the Schaffer-Vega Diversity System wireless unit⁵. The company had already explored this territory before the SVDS Boost: its lineup includes the SoloDallas Storm and the SoloDallas The Schaffer Replica Storm, alongside the SoloDallas SVDS Mini Boost, a mini boost pedal also based on the boost from the Schaffer-Vega Diversity System, originally introduced in 1975, reviewed by Pedal of the Day in November 2024².

One knob: up to 30dB of boost

The SVDS Boost keeps its control surface to a single knob. Guitar World's review puts it plainly: "Its sole knob allows for up to 30dB of gain boost"⁵. RockBoard's PedalPedia entry adds that the boost brings sustain, rich harmonics, and controlled feedback along with the volume⁴.

Premier Guitar's reviewer found the minimalism no limitation, describing "Minimalist controls, one knob, that's it," and noting that the knob sits at unity gain in the earliest third of its range, with volume, compression, saturation and growl increasing above that point⁸. That behavior is what separates it from a clean boost: rather than only getting louder, the pedal moves toward saturation as you turn it up, which is why SoloDallas positions it between boost and overdrive¹³.

What reviewers said

Guitar World's Paul Riario reviewed the SVDS Boost and found its strength was not simply the decibels on tap⁶⁵:

Riario also characterized the pedal as "a pedalboard-friendly mini-pedal," which matters given its compact 4.69" by 2.52" footprint¹⁵. Guitar World's boost pedal buying guide repeated the verdict, crediting the pedal with enriching the dynamic feel of your playing overall⁶. Premier Guitar's Gear Award review from February 2025 found the one-knob format "no less delicious" for its minimalism⁸, and the pedal appeared in Premier Guitar's best guitar gear coverage at $129 street⁷.

Power and practical notes

The SVDS Boost runs on external power only. SoloDallas specifies 9 to 12V DC, center negative, with a 200mA draw, and lists the power supply as sold separately¹.

Other build details from the maker: the circuit is 100% analog, built on a commercial grade PCB, with Neutrik jacks for input and output, and the enclosure measures 4.69" deep by 2.52" wide by 1.57" high¹. SoloDallas sells the pedal directly on its own site, at a regular price of £118.00 (£106.00 on sale)¹, with the US street price at $129⁷.

The SVDS Boost and the SVDS Mini Boost

The SVDS Boost and the SVDS Mini Boost share the same family tree. Pedal of the Day reviewed the Mini Boost in November 2024 as a reproduction of the boost from the 1975 Schaffer-Vega Diversity System wireless, with the same up-to-30dB boost and the same vintage coloration that sets it apart from typical clean boosts². That review described the Mini Boost as "small but HUGE-sounding," built with high-quality components and designed to withstand the rigors of professional touring². The SVDS Boost is the current mini-pedal form of the circuit, as reviewed by Guitar World and Premier Guitar⁵⁸.

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