82 Lead 800 Bass Mod
Headrush Amplifiers

82 Lead 800 Bass Mod

Inspired by Marshall JCM800 (Bass Mod)

The model 82 Lead 800 Bass Mod it is a modified variant of the classic Leads 800, designed to offer:

  • More body on low frequencies
  • Fuller and more modern sound
  • Powerful but controlled distortion

Ideal for rock, hard rock and metal, especially when greater depth is needed on the rhythms.

RockHard RockHeavy MetalMetalPopCountryBass

Controls

Bright

Activate the boost on high frequencies:

  • Y → more attack and definition
  • N → warmer and fuller sound
  • Useful for balancing the more present lows
Treble

Control the high frequencies:

  • Low → smooth sound
  • High → bright and punchy
Middle

Control the mid frequencies:

  • Low → scooped sound
  • High → more presence and body
  • Fundamental for standing out in the mix
Bass

Control the low frequencies:

  • Low → tight and controlled
  • High → very full and powerful This version emphasizes the lows more
Presence

Control the final brilliance:

  • Low → soft sound
  • High → more aggressive and open
Gain

Control saturation:

  • Low → crunch
  • High → full distortion
  • More gain = more compression and sustain
Master Volume

Controls the overall volume:

  • Low → less pressure
  • High → more body and push
  • Interacts with the Gain
Sync
  • Y → synchronized to
  • BPMN → free
Speed

Tremolo speed:

  • 0.5–1 Hz → slow
  • 1–3 Hz → classic
  • 3–6 Hz → fast
Depth

Tremolo intensity:

  • Low → light
  • High → strong
Tremolo
  • Y → active
  • N → bypass
Output Level

Final volume:

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

Pro Tips

BEHAVIOR OF THE AMPLIFIER

  • Fuller sound than the standard Lead 800
  • More present and full-bodied bass
  • Powerful but less sharp distortion
  • Great for heavy rhythms

Advice:

  • High bass → great sound but pay attention to the mix
  • Bright + Presence → recover definition
  • Middle → maintains presence in the mix
  • Gain → controls saturation and sustain

Final advice:

  • More bass → more power, but balance is needed
  • Bright + Presence → maintain definition
  • Perfect for rock and metal rhythms
  • High Gain + High Bass → modern and full sound

Setup Examples

Full rock / rhythmic

BrightN
Treble55%
Middle55%
Bass60%
Presence55%
Gain60%
Speed1 Hz
Depth20%
TremoloN
SyncN
Master Vol60%
Output Level0dB

Powerful hard rock

BrightY
Treble60%
Middle60%
Bass60%
Presence60%
Gain70%
Speed2 Hz
Depth30%
TremoloN
SyncN
Master Vol65%
Output Level+1 dB

Heavy metal/rhythm

BrightY
Treble65%
Middle50%
Bass65%
Presence65%
Gain80%
Speed3 Hz
Depth40%
TremoloN
SyncN
Master Vol70%
Output Level+2 dB