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Synergy Amps Soldano SLO-II 2-channel Preamp Module

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Synergy Amps Soldano SLO-II 2-channel Preamp Module

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$366.00 to $1,459.99

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2 saved

Page last updated Jul 05, 2026

Pricing and availability

We compare 600+ stores and found this item at 6 stores. Prices updated July 3, 2026.

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5.0 (2)

$1,459.99

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$399.99

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5.0 (4)

$399.99 12 available New

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5.0 (1)

$399.99

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$399.99

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4.8 (13)

$369.00 $366.00 $3.00 · All time low

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Price History

Based on price data from 5 merchants for "Synergy Amps Soldano SLO-II 2-channel Preamp Module". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Unlock the legendary high-gain tones that defined a musical era with the Synergy Soldano SLO-II 2-channel Preamp Module. Crafted under the meticulous guidance of Mike Soldano himself, this module delivers the iconic Soldano SLO-100 sound with modern refinements that suit any guitarist's rig. Whether you're a fan of searing leads or tight rhythm tones, the SLO-II's all-tube design powers your performance with lush harmonics and responsive touch.

The SLO-II isn't just about nostalgia; it offers a suite of tone-shaping tools for today's discerning musician. Each of the two channels features independent three-band EQ controls, letting you sculpt distinct sonic identities for each channel. Want more? Engage the Crunch/Overdrive switches to toggle between smooth overdrive and a grittier crunch, all at the flick of a switch. Plus, the Normal/Tight switches offer additional control, letting you choose between classic open sounds or a tighter response that is ideal for modern metal riffing.

Designed to integrate seamlessly into Synergy's modular system, this preamp module is as versatile as it is powerful, making it a must-have for any guitarist looking to elevate their sound.

Key Features:

Two independent channels with dedicated three-band EQs
Crunch/Overdrive and Normal/Tight switches for each channel
Powered by two 12AX7 preamp tubes
Designed by Mike Soldano for authentic SLO-100 tones
Easy installation into Synergy preamp docks

Product specs

Type	Synergy SLodano SLO II Module
Channels	2 channel
Form Factor	Module
EQ	3-band EQ, 2 x Crunch/Overdrive Switch, 2 x Tight/Normal
Tubes	2 x 12AX7
Compatibility	Synergy Preamp Module Dock
Height	1.5"
Width	7"
Depth	5.5"
Weight	1 lbs.

FAQs

What are the main features of the Synergy Soldano SLO-II Preamp Module?: The Synergy Soldano SLO-II Preamp Module features two channels, a 3-band EQ, and switches for Crunch/Overdrive and Tight/Normal settings. It uses two 12AX7 tubes and is designed to fit Synergy Preamp Module Docks.
Is the Synergy Soldano SLO-II suitable for high-gain tones?: Yes, the Synergy Soldano SLO-II is renowned for delivering high-gain tones, making it ideal for rock and metal genres, thanks to its Crunch/Overdrive channel settings.
Can the Synergy Soldano SLO-II Preamp Module be used with any amplifier?: The Synergy Soldano SLO-II is specifically designed to work with Synergy Preamp Module Docks, ensuring optimal performance and compatibility.
What type of tubes does the Synergy Soldano SLO-II Preamp Module use?: The Synergy Soldano SLO-II Preamp Module uses two 12AX7 tubes, which contribute to its signature high-gain and dynamic sound.
How does the Synergy Soldano SLO-II compare to the original Soldano SLO 100?: The Synergy Soldano SLO-II captures the essence of the original Soldano SLO 100, offering similar high-gain tones in a more compact and modular format for preamp docks.

Videos

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Fredrik Akesson OPETH trying the SOLDANO SLO II module by SYNERGY Amps

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Synergy Soldano SLO II Review/Playthrough

BobbyDoesMusic

Synergy Soldano SLO II | New & Updated

GUITARGUITAR

Reviews

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PROS

Delivers a punchy, warm, and authentic tube tone.
Offers versatile high-gain sounds with impressive tonal flexibility.
Compatible with various overdrive pedals, enhancing sound versatility.
Tight switch effectively shapes tone, though it slightly reduces gain.
Great sound quality at both high and low gain settings.
Provides a distinct sound character, different from the original Soldano version.
Built-in IR is surprisingly usable for direct recording.
Excels in delivering 80's to modern metal tones.
Ideal for complementing other Synergy modules, especially for clean tones.

CONS

Higher noise level due to increased gain and bass.
Lacks proper clean tones, requiring additional modules for versatility.
Initial setup may require manual adjustments for optimal sound.
Balancing multiple volume controls can be a bit complex.
Built-in stock IR is considered subpar without external enhancements.

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Synergy Amps Soldano SLO-II 2-channel Preamp Module.

Comparisons

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The Synergy SLO-II matches the in-room feel of amps like Marshall DSL40CR and Friedman Runt 20, especially at above-bedroom volumes.
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The Bogner Uberschall module is noted for its noise even when using noise gates, contrasting with quieter options like the ENGL Powerball.
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Owners note the SYN20-IR's recording quality rivals other amps like the Bogner Ecstasy and Soldano Astro 20, especially in a home studio setting.
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Value and pricing

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Synergy modules, like the ENGL Powerball, offer a cost-effective alternative to full amp heads, providing similar tones at a fraction of the price.
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Use cases and applications

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The Synergy system is highlighted for its appeal to home music room setups, offering extensive tonal options without needing multiple high-cost amp heads.
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The Z-Wreck module is praised for its compatibility with Voxy sounds, handling medium gain tones effectively for diverse musical styles.
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The amp's clean channel is praised for its quality, successfully accommodating fuzz and overdrive pedals without losing clarity.
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The XLR out bypasses the power amp section, using IRs and power amp simulation for silent recording, similar to the Friedman IR-X pedals.
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User experience

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Owners find the Synergy modules particularly appealing for metal, with the ENGL Powerball being a top choice for high-gain preferences.
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After three months, owners still find the Z-Wreck module excels with Marshall-style drive pedals, though power amp structure settings do not save upon restart.
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Initial setup reveals noticeable dynamic differences and improved playing feel compared to digital modelers like Helix.
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Features and functionality

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The ENGL Powerball module's blue channel is praised for delivering versatile clean to overdrive tones with multiple switches for tonal variety.
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The SLO-II module's gain sweep maintains consistent volume, allowing users to set room-friendly levels around 80db without significant volume shifts.
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The Synergy system allows seamless transition between headphone and speaker use without rewiring, a key advantage over other solutions like pedalboard preamps.
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0 0

Structure and reactance knobs significantly affect tone, offering a wide range of sound adjustments and allowing users to tailor the amp's response.
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Mods and upgrades

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Replacing a generic speaker with a Celestion G12H Greenback significantly enhances tone quality, particularly when using budget speaker cabinets.
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Setup and maintenance

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Users have noted the headphone volume control is inconveniently small when accessed directly from the unit, suggesting a mixer for more precise control.
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