The Soldano SLO Plus Super Lead Overdrive is a dual-channel overdrive and preamp pedal that captures the playing experience of the SLO-100 amplifier's channels in a stompbox. It carries the SLO amp's high-gain Overdrive channel and, new for the Plus, the Normal channel's crunch tones, and it can be used as a preamp in front of a power amp as well as a drive pedal on a board1.
The Soldano SLO Plus Super Lead Overdrive is a two-channel take on Soldano's Super Lead Overdrive pedal, adding a second channel to the original single-channel design. It carries a list price of $269.99 USD2. It runs from a 9-volt jack, alongside its LED indicators2.
What it does
Soldano describes the SLO PLUS as delivering "the genuine Soldano Overdrive high gain channel as well as the Normal channel's inspiring crunch tones," and says it can go "from a rich but aggressive distortion, through complex barking crunch tones, to stunningly responsive" playing4. The two channels are switchable with the tap of a toe4.
Vintage Guitar's reviewer found the pedal delivered on the amp's reputation: running a Les Paul through a boutique amp with 6V6s and the Plus set to edge-of-breakup produced "the thick, sustain" for which the SLO-100 is known2. He judged it a realistic alternative to the SLO-100 amp2.
The controls
The two channels each have their own gain and volume, while the tone shaping is shared between them2.
| Control | Scope | What it does |
|---|---|---|
| Preamp (Gain), Overdrive | Overdrive channel | Sets gain for the Overdrive side3 |
| Master (Volume), Overdrive | Overdrive channel | Sets output level for the Overdrive side3 |
| Preamp and Master, Normal | Normal channel | Dedicated gain and output controls for detailed tweaking2 |
| Bass, Middle, Treble | Shared | Three-band EQ serving both channels2 |
| Presence | Shared | Top-end shaping2 |
| Deep | Shared, side-mounted | Shapes the low end2 |
Guitar Pedal X listed the layout when the pedal was announced: the Overdrive side carries Master (Volume) and Preamp (Gain), while Treble, Middle, Bass, Presence, and the side-mounted Depth control are universal, shared by both channels3.
The EQ is shared, not per channel. If you set the Normal channel's crunch around one EQ position, the Overdrive channel's high-gain tones use the same Bass, Middle, Treble, and Presence settings, so plan both sounds around one tone stack.
How it compares
The SLO-100 amp pairs a Clean channel with an Overdrive channel5. The SLO Plus instead pairs the Normal channel's crunch with the Overdrive channel, so it leans toward drive tones rather than clean ones. Against the original SLO pedal, the Plus is the fuller version: the same Overdrive lineage with a second, independently controlled channel added2. Players comparing it with other drives can start at the Overdrive Pedals page, and those after a preamp-style pedal can look at Preamp Pedals.
Videos
Andertons Music Co
Pete Thorn
Soldano Custom Amplification
Questions
What does the SLO Plus add to the original SLO Pedal?
The original SLO Pedal, released in 2022, was a single-channel overdrive capturing the SLO-100 amp's Overdrive channel. The SLO Plus, introduced in December 2024, adds the SLO amp's Normal channel in crunch mode alongside the Overdrive channel. Each channel has its own dedicated Preamp (gain) and Master (volume) controls, while the tone-shaping EQ is shared between the two.
What does the Deep switch do on the Soldano SLO Plus?
The Deep switch is mounted on the side of the pedal and shapes the low end. It sits alongside a shared three-band EQ (Bass, Middle, Treble) and a Presence control, giving players a way to add low-end weight to either channel without touching the shared Bass knob.
How is the Soldano SLO Plus powered?
The pedal has a 9-volt jack for power, as noted in Vintage Guitar's March 2025 review. It sits in a durable metal housing with LED indicators and heavy-duty foot switches.
Do the two channels on the SLO Plus share controls?
Partly. Each channel has dedicated Preamp (gain) and Master (volume) controls, so the two sides can be set independently. The tone stack is shared: one set of Bass, Middle, Treble, and Presence controls serves both channels, with the Deep switch on the side also applying across the board.
Sources (5)
- SLO PLUS Pedal, soldano.com, 2026-07-30
- Soldano SLO Plus Super Lead Overdive, Vintage Guitar magazine, 2025-11-14
- Guitar Pedal X, Guitar Pedal X, 2024-12-05
- SLO PLUS Pedal, soldano.com, 2026-06-01
- Soldano SLO Pedal High Gain Drive, Delicious Audio, 2024-03-26
