The LPD Pedals Sixty8 Overdrive is a Plexi-style overdrive from LPD Pedals, an Arizona-based builder whose catalog leans heavily on Marshall-flavored drive: five out of six of the builder's early releases were pedals recreating different flavors of that tone1. The Sixty8 is designed to sound like the company owner's own and beloved 1968 Marshall Plexi 12000 series amp, and Delicious Audio describes it as delivering "that dynamic Plexi tone, with the signature sustain at relatively low distortion settings"1.
The design goal, as the builder put it, was practical: something that would let back-line players enjoy a nice M-style crunch channel alongside their F-style cleans, meaning a Marshall-voiced drive to stack on a Fender-style clean amp1. GuitarPlayer has described the Sixty8 as a "Plexi-style stack-in-a-box"2.
What it is based on
The circuit is modeled on the owner's 1968 Plexi 12000 series, and the builder set strict requirements for the result: super low noise, completely natural note sustain and decay, free of any strange fizzy artifacts, a wide range of clean to heavily overdriven tones, and a build that is tour-worthy and durable1. Delicious Audio added the Sixty8 to its list of Best Plexi-Style Pedals in May 20251.
The controls: Gain, Bass and Treble
The Sixty8's three knobs each do more than the usual fixed EQ, and the way they interact is the heart of the pedal.
| Control | What it does |
|---|---|
| Gain | Activates a gradual high-pass filter at higher settings, cutting some low end for a tighter tone; also works as a shelving EQ that attenuates low frequencies as gain increases1 |
| Bass | Pre-clipping, and designed to offset the shelving filter on the Gain control; simulates jumping or bridging the channels on the real amp, letting you mix in as much of the "Normal" channel as desired1 |
| Treble | Increasing it makes the pedal snappy, responsive and somewhat jangly, which Delicious Audio calls great for rhythm and rhythm/lead hybrid styles1 |
The Bass control's channel-jumping behavior is the detail players of real Plexis will recognize: on the actual amp, bridging the Normal and Treble inputs mixes the two channels' characters, and the pedal's Bass knob recreates that mix in the pre-clipping stage1.
The Sixty8 family: Deluxe and Sixty8X
The Sixty8 is also available in a dual-channel Deluxe format with added boost1.
The Sixty8 Deluxe takes the original Sixty8 Drive and, in Delicious Audio's words, "makes it a performance monster"3. It is a footswitchable two-channel design:
- Green channel: low gain, indicated by the center LED turning green3
- Red channel: high gain, indicated by the center LED turning red3
- Boost: a third element that can be combined with either channel, giving 5 combination options between the 2 channels and the Boost, essentially two pedals in one enclosure4
The two channels have separate Volume, Tone and Gain controls5, and where the original Sixty8 uses a single Tone section, the Deluxe splits it into Treble and Bass parameters for finer dialing4. Pedal of the Day's reviewer found this "allows you to dial in your perfect sound with ease" and that the pedal gives "access to a slew of great Plexi tones on the fly"4. The Deluxe runs on 9v but, in the same reviewer's words, "it sounds incredible at 18v as well"4; Delicious Audio describes it as a dual-channel Plexi distortion that runs internally at 18v for extra headroom5. Build details include a purple enclosure and Switchcraft input, output and DC jacks4.
The Sixty8X is a further evolution of the Sixty8 Drive, which the builder designed to let back-line players have a nice M-style crunch channel to go with their F-style cleans1. It keeps that character and adds:
The design goal behind the family remains the one the builder stated for the original Sixty8: a nice M-style crunch channel to go with F-style cleans1.
Guitar Pedal X reported it as a limited extended-range anniversary edition of the builder's Plexi pedal6.
Where it sits in the LPD lineup
Videos
Mike Hermans
TheSuperFunAwesomeHappyTimePedalShow
Mark Hopkins
Questions
What amp is the LPD Sixty8 based on?
The Sixty8 is designed to sound like the LPD Pedals company owner's own 1968 Marshall Plexi 12000 series amp. It is a Plexi-style overdrive that aims to deliver that amp's dynamic crunch and signature sustain at relatively low distortion settings.
What is the difference between the Sixty8 and the Sixty8 Deluxe?
The Sixty8 Deluxe takes the original Sixty8 Drive and turns it into a dual-channel pedal, with a footswitchable Low Gain (Green) channel and High Gain (Red) channel, plus a Boost, giving five combination options in one enclosure. The original Sixty8 is the single-channel version.
What are the Green and Red channels on the Sixty8 Deluxe?
Green is the lower gain channel and Red is the higher gain one, shown by the color of the center LED. The two channels have separate Volume, Tone and Gain controls, and both can be combined with the Boost for more options.
What is the LPD Sixty8X?
The Sixty8X is a limited-edition 10th-anniversary evolution of the 2016 Sixty8 Drive, announced in February 2026. It adds an updated phase inverter clipping circuit, two voiced channels, and a four-band EQ with Presence to the Marshall-style design.
Does the Sixty8 Deluxe work at 18 volts?
Yes. The Sixty8 Deluxe can run on 9v, and Pedal of the Day's reviewer found it sounds incredible at 18v as well. Delicious Audio also describes it as a dual-channel Plexi distortion that runs internally at 18v for extra headroom.
Who designed the LPD Sixty8?
The Sixty8 was designed to sound like the LPD Pedals company owner's own 1968 Plexi 12000 series amp, so the owner's amp is the reference for the circuit's voicing. LPD Pedals is an Arizona-based builder.
Sources (6)
- LPD Pedals Sixty8 Overdrive, Delicious Audio, 2025-05-19
- LPD Pedals Releases Expanded Seventy4 Deluxe, GuitarPlayer (www.guitarplayer.com), 2022-08-30
- LPD Pedals Sixty8 Deluxe, Delicious Audio, 2023-10-17
- LPD Pedals Sixty8 Deluxe Overdrive, Pedal of the Day, 2021-06-04
- 2024 Best Plexi Pedals & Marshall-Style Distortions: A Buyer's Guide, Delicious Audio, 2024-09-16
- Guitar Pedal X, Guitar Pedal X, 2026-02-26
