Pillar guide · 16 guides

Amp Settings & Tone

The amp is the platform. Every tone on the site sits on top of one of these — or a modeled version of it. Here's how each canonical amp actually sounds like itself, and the settings that get you there.

What makes an amp sound like that amp

Four variables: the preamp topology (single-ended triode, push-pull, cascaded gain stages), the power-amp topology (class A, class AB, single-ended, push-pull), the output transformer (saturation behavior, frequency response), and the speaker + cab (impedance curve, resonance, breakup). Every canonical amp is some specific combination of those four, and the settings that flatter one amp will push another into territory it wasn't designed for.

The guides below treat each amp as its own instrument. Settings are specific because the amps are specific. “Start at noon and tweak” isn't a real answer for the JCM800 or the AC30; the right settings depend on what you're trying to do with that amp's personality.

Clean and edge-of-breakup

The amps that sit down in a mix and let pedals do the coloring — or handle their own saturation at the top of the volume range.

Fender Deluxe Reverb Settings

Blackface

The studio amp. Where the sweet spot lives, why the vibrato channel isn't actually tremolo, and the rig that Mayer built a career on.

Fender Deluxe Reverb vs. Tonemaster

Comparison

Does the solid-state Tonemaster actually beat the tube original for studio work? We did the A/B.

Vox AC30 Settings Guide

British class A

The chime. Why Cut is backwards (up cuts treble), Top Boost vs Normal channel choice, and the Tom Petty rhythm sound.

Vox AC30 Cut Knob Explained

Single-knob deep dive

A deeper dive on the single most misunderstood knob on the British clean amp.

Roland JC-120 Settings Guide

Solid state clean

The transistor amp that actually worked. Chorus settings, why it's Andy Summers's only amp, and how to stop it from sounding sterile.

British crunch and high-gain

From the Plexi's open-circuit growl through the 5150's modern metal tightness. The master-volume and preamp-stack lineage.

JCM800 Settings Guide

Master volume Marshall

The 80s metal and hard rock backbone. Why gain at 4 with master cranked sounds different from gain at 8 with master low.

Peavey 5150 Settings Guide

Metal high-gain

The metal amp. Pre gain vs post gain, why scooping mids in isolation kills you in a mix.

Peavey 5150 at Bedroom Volume

Bedroom-friendly

How to get a 120W head to sound right at apartment-friendly volumes. Three use-case settings with knob positions.

Power Tube Saturation Explained

Theory

What class AB push-pull does to harmonics, where the 'warmth' of a cranked Plexi actually comes from, and why every guitar amp sounds different at volume.

Attenuators, integration, and volume controls

The practical side — how to run these amps at non-venue volumes, and how to integrate them with modelers, effects loops, and modern rigs.

Reactive vs Resistive Attenuators

Attenuators

Why the attenuator you pick shapes the tone. How a real speaker cab's impedance curve differs from a dummy load, and what that does to the output transformer.

Tube Amp Attenuator Limits (Lower Wattage)

Attenuators

The hidden costs of running a low-wattage amp through an attenuator. At some point you're better off with the power soak removed.

4-Wire Method Explained

Integration

How to loop your modeler's effects into a real tube amp so your amp's preamp-AND-power-amp stay in the signal path.

Amp Gain, Volume, Master Controls

Theory

The three volume knobs and what each one actually controls — Channel Volume, Master Volume, and Output Volume on modern amps.

Amp types and modeler choices

Primers on amp topology (what tube vs solid-state and class A vs AB actually mean) and modeler picks for players who've committed to the digital platform.

Complete Guide to Guitar Amp Types

Primer

Tube vs solid state, class A vs class AB, single-ended vs push-pull. What the labels actually mean and how they shape tone.

Best Helix Amp Models (Blues)

Modeler

Sean Nakamura's top picks for blues tone on the Helix. Underrated amp models and why they work for blues specifically.

10 Helix Amp Models (Underrated)