Leslie Combo Pre-Amp III

0 wishlisted

0 saved

Page last updated Dec 20, 2025

Pricing and availability

Store

Reviews

Price

Average Price: $299

Budget/Beginner

$799

$2000+

Price Tier

In the Organs category, Leslie Combo Pre-Amp III is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

Budget

Standard

High-end

^* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.

Description

Edit description

Elevate your organ performance with the Leslie Combo Pre-Amp III, an essential tool for musicians seeking to capture the authentic Leslie sound. This pre-amp is specially designed to interface with Leslie speakers, offering the classic rotary speaker effect that has been essential to countless iconic performances. The Leslie Combo Pre-Amp III allows for seamless connection between electronic keyboards or organs and Leslie speaker cabinets, enhancing your sound with the renowned swirling, dynamic tones.

This pre-amp is equipped with three separate channels for optimal control and flexibility, giving musicians the freedom to tailor their sound precisely to their liking. It incorporates both 11-pin and 8-pin Leslie connectors, ensuring compatibility with a wide range of Leslie models. The Leslie Combo Pre-Amp III is not just about adaptability but also ensures high-quality audio performance, making it a reliable partner for any keyboardist or organist.

The pre-amp features intuitive controls for volume, bass, and treble, allowing you to shape your sound with precision. Designed for gigging musicians, it is built to withstand the rigors of live performance while still maintaining exceptional sound quality. With its robust construction and versatile connectivity options, the Leslie Combo Pre-Amp III is a must-have for anyone looking to harness the legendary Leslie sound in their music.

Key Features:

Three separate channels for versatile sound control
Compatible with both 11-pin and 8-pin Leslie speakers
Intuitive volume, bass, and treble controls
Durable design for live performance environments
Enhances sound with the classic Leslie rotary effect

Product specs

Brand	Leslie
Model	Combo Pre-Amp III
Year	1970s
Made In	United States
Categories	Keyboard Foot Pedals

FAQs

What type of organs is the Leslie Combo Pre-Amp III compatible with?: The Leslie Combo Pre-Amp III is designed to work with various organs, particularly those that require a preamp to connect to a Leslie speaker, enhancing their sound projection and tonal quality.
Does the Leslie Combo Pre-Amp III require any special power supply?: The Leslie Combo Pre-Amp III typically requires standard power connections compatible with vintage Leslie equipment, ensuring seamless integration with traditional organ setups.
How does the Leslie Combo Pre-Amp III affect the sound of my organ?: The Leslie Combo Pre-Amp III enhances the organ's sound by providing a richer, more dynamic tone and facilitating the connection to a Leslie speaker, which is known for its distinctive rotating sound effect.
Can the Leslie Combo Pre-Amp III be used with modern keyboards?: While primarily designed for vintage organs, the Leslie Combo Pre-Amp III can be adapted for use with modern keyboards that support external preamps, allowing them to benefit from the classic Leslie sound.
Is the Leslie Combo Pre-Amp III suitable for live performances?: Yes, the Leslie Combo Pre-Amp III is well-suited for live performances, offering robust sound enhancement and reliable connectivity to Leslie speakers, making it ideal for stage use.

Reviews

Add review

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Leslie Combo Pre-Amp III.

Features and functionality

0 0

The Leslie Combo Pre-Amp III is designed only for 11-pin Leslie speakers, such as the 860, and lacks a 1/4 output for broader compatibility.
Source

Setup and maintenance

0 0

The Leslie 122 and 147 models are incompatible with this preamp due to their 6-pin connector and tube amp design.
Source

Mods and upgrades

0 0

For adding effects like overdrive or phaser to a Hammond C3 connected to a Leslie 122, a specialized effects loop kit is required.
Source
0 0

Swapping to a 2-speed motor with a Dr. Fishsticks speed controller is a popular modification for enhanced rotary control on Leslie speakers.
Source
0 0

Relocating the breaker inside the chassis and adding a latching SPST switch for easy toggle of effects like the Echoplex echo is a practical mod.
Source

Use cases and applications

0 0

The preamp is ideal for use with solid-state Leslies that utilize an 11-pin interface, not suitable for traditional tube-driven models like the 122.
Source
0 0

Dialing back the tone knob and using a fast rotor can achieve a Hammond-like sound, while slow speed offers rich swells for rhythm sections.
Source

Comparisons

0 0

The Leslie 122 and 147 are considered the gold standard for sound quality, making the Combo Pre-Amp III less relevant for users of these models.
Source
0 0

The Pigtronix Rototron is favored for emulating Leslie sounds, though owners acknowledge it's not as authentic as a true Leslie.
Source

User experience

0 0

Users emphasize the difficulty in perfectly emulating the physical presence of a Leslie with pedals, despite trying numerous rotary effects.
Source