Boss XS-1

What Revv Generator G20 20-Watt 2-Channel Tube Head brings here leans toward high gain — that's worth building a pairing around

Comes later in the signal chain

Comes later in the signal chain

Put Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt after Boss XS-1

Comes later in the signal chain

Put Marshall Studio JCM900 SN20H after Boss XS-1

Comes later in the signal chain

Synergy SL2 Module goes after Boss XS-1 in the chain

Comes later in the signal chain

Friedman BE-Mini Head goes after Boss XS-1 in the chain

Comes later in the signal chain

Hughes & Kettner Warp 7 goes after Boss XS-1 in the chain

Comes later in the signal chain

Put Egnater Tourmaster Combo 4212 after Boss XS-1

Comes later in the signal chain

Put Hughes & Kettner Coreblade after Boss XS-1

Put the XS-1 ahead of the Dirt Transmitter — octave tracking is cleanest off a dry signal, and the drive can push the blended output as hard as you want.

Comes later in the signal chain

The Odin's doom-heavy stoner fuzz gives the XS-1's dry octave tracking a genuinely dense signal to divide.

Comes later in the signal chain

Run the Memory Man's lush analog echo after the XS-1's dry, live octave tracking and the repeats carry the octave layers forward. — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Dunlop - MXR Carbon Copy Deluxe Analog Delay's analog warmth voice goes after Boss XS-1 in the signal chain — it's not there to compete with Boss XS-1's own octave character — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Comes later in the signal chain

Put Death By Audio Destruction after Boss XS-1

Comes later in the signal chain

Dr. Scientist Frazz Dazzler V2 goes after Boss XS-1 in the chain

Comes later in the signal chain

Put Subdecay F-Bomb after Boss XS-1

Comes later in the signal chain

Warm Audio Jet Phaser belongs after Boss XS-1, since modulation reads clearest once the core tone is set