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The Soldano SLO-100 Super Lead Overdrive boasts searing harmonics with tons sustain & a tight touch response. Featuring all-tube preamp, 2 independent channels, & plenty of gain/EQ tone shaping. The SYNERGY SYN-20IR is an All-Tube, IR Equipped, 20w amp with a 3-Channel Preamp Module Platform.
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The Soldano SLO-100 didn't just raise the bar for high-gain amplification — it picked it up, cranked it to eleven, and left every other amp in 1987 questioning its life choices. Mike Soldano's legendary circuit has earned the trust of players like Mick Mars and Eric Clapton, and now that same iconic tone lives inside the Synergy SLO II preamp module. Paired with the SYN-20IR all-tube modular head, you get the sound of a cranked SLO-100 in a perfect package.
Most guitarists spend years chasing their perfect tone. The SLO II hands it to you in two fully independent channels that cover everything from sparkling clean to face-melting overdrive. Each channel operates on its own terms, letting you dial in two completely different voices and switch between them without any tonal identity crisis.
There’s no modeling here. No digital wizardry pretending to be a tube amp over a polite handshake. The SLO II is an all-tube preamp module powered by two 12AX7s, designed by Mike Soldano himself to replicate the exact circuit behavior of the original SLO-100. The result is rich harmonic complexity, thick saturation, and that famously elastic sustain — straight from the source.
The original SLO module became the most sought-after preamp in the entire Synergy lineup — and then the SLO II showed up and made it look like a rough draft. Three targeted upgrades give players more control without touching what made the original so special. The heart and soul — touch response, thick voice, famous sustain — remain completely intact.
The Synergy Soldano SLO II module paired with the SYN-20IR head is one of the most complete high-gain rigs available at any price. You get Mike Soldano's original circuit DNA, two independently voiced channels with more switching options than most guitarists know what to do with, a real tube power stage, built-in IR loading, and MIDI control — all in a package that's easy to transport, quick to install, and genuinely fun to play.
Whether you're chasing the searing harmonics that defined Mick Mars's crunch or the bluesy warmth that Eric Clapton found in his SLO-100, this combination gets you there.
The SLO II is an all-tube preamp module for the Synergy modular amp system, designed by Mike Soldano himself to replicate the circuit of his iconic SLO-100 amplifier. It features two independent channels, each with its own EQ, Crunch/Overdrive switch, and Normal/Tight switch for expanded tonal flexibility.
The SLO II adds three key upgrades over the original: independent three-band EQs on both channels, a Crunch/Overdrive select switch per channel, and a Normal/Tight switch per channel. Everything that made the original great, including touch response, thick voice, and sustain, remains unchanged.
Yes. The SYN-20IR is fully compatible with the entire Synergy preamp module library, which includes modules based on Marshall, Fender, Mesa/Boogie, Friedman, and many other iconic amplifiers. It’s one of the most flexible modular amp platforms available.
Absolutely. The SYN-20IR includes a built-in IR loader that allows you to record directly to your interface or run silent on stage without needing an external load box or cabinet. It’s a genuinely studio-ready solution out of the box.
Very much so. The original SLO-100 was famously used by Mark Knopfler, Eric Clapton, Gary Moore, and Warren Haynes, none of whom are known for playing metal. The SLO II's clean channel and crunch mode are expressive and dynamic enough for blues, classic rock, and country applications.
