89 SL-100 Drive
Headrush Amplifiers

89 SL-100 Drive

Inspired by Soldano SLO-100 (Drive)

The model 89 SL-100 Drive it is designed to deliver controlled and defined distortion, ideal for rock, hard rock and saturated leads:

  • Modular drive to go from light crunch to full distortion
  • Comprehensive EQ controls to define body, brilliance and presence
  • Adjustable preamp to shape saturation and dynamics
  • Master Volume and Output Level to control pressure and boost

Perfect for humbucker or single coil guitars that need sustain and definition.

BluesRockHard RockHeavy MetalBass

Controls

Mod

Activate enhanced

Drive mode:

  • Y → drive mode active, strong saturation
  • N → clean mode / light crunch
Treble

Control the high frequencies:

  • Low → soft sound
  • High → bright and cutting
Middle

Controls the mid frequencies:

  • Low → natural scoop
  • High → more body and presence Fundamental to stand out in the mix and maintain definition
Bass

Control the low frequencies:

  • Low → tight and controlled
  • High → full and powerful
Presence

Controls the final brilliance:

  • Low → soft sound
  • High → sharper and more open Affects definition and “air” of the sound
Preamp

Controls the preamp level:

  • Low → light crunch
  • High → full and sustained distortion Interacts with Master Volume to modulate dynamics and sustain
Master Volume

Controls the overall volume of the amplifier:

  • Low → controlled sound
  • High → more boost Allows you to adjust feel and pressure without altering the timbre
Output Level

Controls the final volume:

  • Negative → attenuation 0 d
  • B → neutral
  • Positive → boost Does not alter the timbre

Pro Tips

BEHAVIOR OF THE AMPLIFIER

  • Defined and dynamic sound, from light crunch to full distortion
  • Modular EQ for body and shine
  • Modular preamp → complete control of gain and saturation
  • Master Volume and Output Level allow precise thrust adjustment

Advice:

  • Mod ON + High Treble → punchy lead sound
  • Middle medium-high → maintains body and definition
  • Controlled bass → avoids muddying with high drive
  • Preamp + Master Volume → modulate sustain and compression without altering timbre

Final advice:

  • Mod ON + Treble alto → punchy lead
  • High Preamp + Master Moderate Volume → full controlled distortion
  • Middle and Presence → balance body and shine

Setup Examples

Crunch rock / powerful rhythm

ModN
Treble55%
Middle55%
Bass50%
Presence55%
Preamp55%
Master Vol60%
Output Level0dB

Distorted lead / defined solo

ModY
Treble65%
Middle55%
Bass50%
Presence60%
Preamp65%
Master Vol65%
Output Level+1 dB

Hard rock / full distortion

ModY
Treble70%
Middle50%
Bass55%
Presence65%
Preamp70%
Master Vol70%
Output Level+2 dB