HeadRush Flex Prime settings
Holy Wars settings for HeadRush Flex Prime
Megadeth · adapted 10 times on ToneAdapt
To get the Megadeth "Holy Wars" riff tone on a HeadRush Flex Prime, use the Hi Gain amp model on the lead channel, then set Drive 8, Master 7, Bass 5, Mid 5, Treble 7, Presence 6. Use the bridge pickup with your guitar's tone on 10 and volume on 10.
Riff settings
updated 2026-11-04
- Amp model
- Hi Gain
- Channel
- Lead
- Cab
- 4x12 closed back
- Pickup
- Bridge pickup
- Guitar knobs
- Tone 10 · Volume 10
Amp block
- Drive
- 8
- Master
- 7
- Bass
- 5
- Mid
- 5
- Treble
- 7
- Presence
- 6
Effects chain
- 1distortionProCo RATVolume 7 · Filter 5 · Distortion 8
- 2noise gateNoise GateRelease 3 · Threshold 5
- 3boostClean BoostGain 5 · Level 8
Playing tips
- Focus on tight palm muting to achieve a percussive attack.
- Use aggressive picking for a sharp articulation in the riff.
- Maintain a fast, staccato playing style to match the original tone.
The original rig
What Megadeth used on the recording, for reference. ToneAdapt translates this to the controls your HeadRush Flex Prime actually has.
- Guitar
- Jackson KV Pro Dave Mustaine Signature (likely with Bill Lawrence L-500XL bridge pickup)
- Amp
- Marshall JCM800 2203 head into DeCuir 4x12 cabinet with Celestion speakers
- Gain
- 7.5
- Bass
- 5
- Mid
- 5.5
- Treble
- 7
- Presence
- 6.5
- Reverb
- 0
Different guitar or pedals? Get Holy Wars adapted to your exact rig
These settings were generated for the gear named above. ToneAdapt adapts Megadeth's tone to your own guitar, pickups, amp and pedals in seconds.
Frequently asked questions
What amp model should I use on the HeadRush Flex Prime for Holy Wars?
Use the Hi Gain (lead channel) with Drive 8, Master 7, Bass 5, Mid 5, Treble 7, Presence 6, followed by ProCo RAT, Noise Gate, Clean Boost.
Which pickup should I use for Holy Wars?
Bridge pickup, with the guitar's tone at 10 and volume at 10.
What gear did Megadeth use on Holy Wars?
Guitar: Jackson KV Pro Dave Mustaine Signature (likely with Bill Lawrence L-500XL bridge pickup). Amp: Marshall JCM800 2203 head into DeCuir 4x12 cabinet with Celestion speakers.
Will these settings work with my guitar?
Different pickups change how much gain and treble you need. ToneAdapt adapts the tone to your exact guitar, pickups, amp and pedals.
Holy Wars on other amps
Popular songs on the HeadRush Flex Prime
- Master of Puppets · Metallica
- Walk · Pantera
- Enter Sandman · Metallica
- Sweet Child O' Mine · Guns N' Roses
- Welcome to the Jungle · Guns N' Roses
- Back in Black · AC/DC
- Raining Blood · Slayer
- Iron Man · Black Sabbath
- Hotel California · Eagles
- Highway to Hell · AC/DC
- Layla · Derek and the Dominos
- Pride and Joy · Stevie Ray Vaughan
Settings are generated by ToneAdapt's tone adaptation for the gear named on this page and are a starting point — every amp, guitar and room is a little different.