Peavey Session-LTD 400 Preamp Pedal User Guide

Quick guide from the manual

The Peavey Session-LTD 400 Preamp Pedal is designed to replicate the preamp section of the original 1974 Peavey Session 400 amplifier. It is not a boost pedal and does not contain a built-in amplifier, meaning it cannot drive speakers or headphones directly. It must be connected to an external amplifier or PA system. Important: Always use a 9VDC, negative-tip power supply. Using a positive-tip power supply will damage the unit and void the warranty.

Control Functions

The pedal features several controls to shape your tone:

• Volume Control: Sets the gain of the input preamp. It does not indicate power output.
• Bass Control: Part of an electronic crossover; provides boost and cut for bass frequencies.
• Treble Control: Part of an electronic crossover; provides boost and cut for treble frequencies.
• Mid Control: A cut-type control to tailor midrange frequencies.
• Sensitivity Control: Allows the player to cut or boost sensitivity to manage noise or signal levels.
• Shift Control: Selects the specific frequency range in the midrange spectrum to cut.
• Presence Control: Adjusts the extreme top end (treble) and brings out upper harmonics.
• Bypass Switch: Hard-bypass switch with anti-click circuitry for quiet operation.

Connections and Power

The pedal includes an instrument input and an output capable of driving PA systems, instrument amplifiers, or signal processors. The unit can be powered by a 9V battery, though operating time is limited to approximately two hours due to the 25V preamp design. For extended use, a wall-wart power supply (9VDC, 250mA or greater, negative tip) is recommended.

Usage and Connection Chains

Depending on your setup, use the following signal chains:

• For Sound Systems (In-ear/Stage monitors): Instrument output -> Volume pedal -> Effects -> Session-LTD -> Direct box -> Sound system input.
• For Combo Amplifiers (Peavey style): Instrument -> Volume Pedal -> Effects -> Session-LTD -> POST EQ Return (allows use of amp's internal reverb).
• Alternative Combo Setup: Instrument -> Volume Pedal -> Effects -> Session-LTD -> POWER AMP IN (bypasses internal reverb).
• Alternative Combo Setup: Instrument -> Volume Pedal -> Effects -> Session-LTD -> Normal amp input (allows access to amp tone controls).

Quick Start Settings

The manual provides suggested settings for different instruments:

• Classic 1974 Session 400: Use the provided control layout to emulate the original sound.
• Modern Steel: Adjust settings to suit modern steel guitar requirements.
• Fiddle: Specific settings are recommended to optimize the preamp for fiddle performance.