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Marshall Amplification Valvestate 2000 AVT series User Manual

Marshall Amplification Valvestate 2000 AVT series
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1
ENGLISH
From Jim Marshall
I would like to thank you personally for selecting one of our
Valvestate 2000 AVT amplifiers.
Ever since its initial launch in the early 1990’s, the original
Marshall Valvestate technology received worldwide acclaim and set a
new standard in affordable quality amplification. However, my
dedicated team of designers are constantly looking for methods to
make our amplifiers sound even better. As they are all guitar players
themselves this process has become a passion within the design
department.
As the name Advanced Valvestate Technology (AVT) suggests,
your new amplifier benefits from their research and utilises their
latest circuit innovations, all of which are totally unique to Marshall.
By emulating the feel and response of an all-valve amplifier even
more closely, the new AVT range perform brilliantly and represent
yet another major step forward in guitar sound technology.
I suggest that you read this manual thoroughly before operating
your new amplifier and keep it in a safe place for future reference.
This will help you to derive maximum enjoyment from our Advanced
Valvestate Technology.
Wishing you every success.
Yours Sincerely,
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Marshall Amplification Valvestate 2000 AVT series Specifications

General IconGeneral
TypeGuitar Amplifier
Channels2
Preamp Tubes1 x 12AX7 / ECC83
EffectsReverb
EQ3-Band (Bass, Middle, Treble)
TechnologyHybrid (Valve and Solid State)

Summary

From Jim Marshall

Important Safety Instructions

Apparatus Earthing Requirement

Crucial safety instruction mandating the earthing of the apparatus for protection.

Modification Caution

Warning against unauthorized modifications that could void user authority.

Audio Cable Recommendation

Recommendation for using high-quality, screened audio cables not exceeding 10 metres.

Ventilation Grille Warning

Instruction to ensure free movement of air around the amplifier by not obstructing grilles.

USA Plug Safety

Guidance on not defeating the purpose of polarized or grounding plugs for safety.

Introduction

What is AVT?

Explanation of Advanced Valvestate Technology (AVT) as a hybrid amplifier design.

Valve Drive Pre-amp

Description of the ECC83 valve in the preamp stage and its sonic benefits.

Power Amp Delivery

Focus on the power stages designed for warm, musical feel and live performance reliability.

Extended Bass Response Loudspeakers

Details on developed speakers providing strong bottom end in compact cabinets.

DFX On Board Effects

Description of integrated Digital Effects (DFX) and their impact on signal integrity.

AVT100 Front Panel Features

Pre-amp Section Overview

Details the preamp section where gain, tone, and volume of channels are set.

Input Jack Socket

The primary input for connecting your guitar to the amplifier.

Clean Channel Selector Switch

Allows selection of the Clean channel from the front panel.

Clean Channel Gain Control

Regulates drive into preamp valve stages for clean to crunch tones.

Clean Channel Bright Switch

Adds high frequencies to the Clean channel drive for brighter tones.

Clean Volume Control

Determines the volume of the clean channel, with potential for power amp distortion.

Clean Channel Tone Controls

Rotary Bass, Middle, and Treble controls for maximum tonal variation.

OD1 Channel Select Switch

Switch to select the Overdrive 1 (OD1) channel of the amplifier.

OD1 Gain Control

Controls the 'sonic brain' of the OD1 channel for various overdrive tones.

OD1 Scoop Switch

Provides a pre-set mid-scoop contour for the OD1 channel.

OD1 Volume Control

Determines the output volume of the OD1 channel.

OD2 Channel Select Switch

Switch to select the Overdrive 2 (OD2) channel of the amplifier.

OD2 Gain Control

Provides extreme gain levels for a crushing crunch, perfect for modern metal.

OD2 Scoop Switch

Advanced contour control for OD2, creating a 'bottom heavy' scooped sound.

OD2 Volume Control

Regulates the drive of the OD2 channel into the power stage, controlling its volume.

Overdrive Tone Controls

Shared Bass, Middle, Treble EQ for OD1 and OD2, similar to classic Marshall amps.

Master Section Controls

Controls that adjust the power amp section, determining overall volume and presence.

Master Volume Control

Governs the overall volume of the amplifier after channel volumes are set.

Master Presence Control

Increases high frequency control by altering power amplifier feedback.

FX Section

Details the effects section, including parallel FX loop and internal digital effects.

Parallel FX Loop

Rear-mounted parallel FX loop for connecting external effects devices.

FX Loop Mix Control

Adjusts the mix of external effects for all channels, from dry to wet.

Internal Digital FX

Features 16 on-board digital effects with controls for Mix, Adjust, and Program.

DFX Program Descriptions

Descriptions of the 16 available DFX programs, including reverbs, chorus, and delay.

DFX Mix Control

Determines the level of the internal digital effects.

DFX Adjust Control

Adjusts a specific parameter for each DFX program, like decay or rate.

DFX Program Selection

Selects each of the 16 on-board digital effects programs.

Digital FX Program/Adjust Table

Table listing programs and the parameter adjusted by the Adjust control.

Power Switch Operation

Switches the amplifier on and off, with indicator light and anti-thump circuitry.

AVT100 Rear Panel Features

Mains Input Connector

Connection point for the detachable mains (power) lead.

Loudspeaker Jack Sockets

Socket for connecting the internal 8 Ohm Celestion loudspeaker.

Loudspeaker Load Warning

Critical warning to always provide a load equal to or greater than 8 Ohms.

Footswitch Connection

Connection for the supplied 4-way footswitch for channel and DFX selection.

Headphone Output

Emulated headphone output for silent practice.

Emulated Line Output

Specially treated output emulating a Marshall 4x12 cabinet for recording/live use.

FX Loop Connections

Details the FX Send, FX Return, and FX Level controls for external effects.

FX Loop Hints

Tips for using the parallel FX loop effectively with various effects.

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