
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

