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Positive Grid BIAS FX 2 settings

Back in Black settings for Positive Grid BIAS FX 2

AC/DC · adapted 2 times on ToneAdapt

To get the AC/DC "Back in Black" riff tone on a Positive Grid BIAS FX 2, use the 69 Plexiglas V2 (Marshall Plexi) amp model on the crunch channel, then set Drive 4, Master 7, Bass 4, Mid 7, Treble 5, Presence 5. Use the bridge pickup with your guitar's tone on 7-8 and volume on 8-9.

Riff settings

Adapted for a Schecter Hellraiser C-1 · updated 2026-09-14

Amp model
69 Plexiglas V2 (Marshall Plexi)
Channel
Crunch
Cab
4x12 cabinet with Celestion G12M Greenbacks
Pickup
Bridge pickup
Guitar knobs
Tone 7-8 · Volume 8-9

Amp block

Drive
4
Master
7
Bass
4
Mid
7
Treble
5
Presence
5

Effects chain

  1. 1overdriveVintage OverdriveGain 5 · Tone 6 · Level 7
  2. 2reverbVintage Spring HDMix 3 · Decay 4

Playing tips

  • Focus on a tight, percussive attack for the riff.
  • Use palm muting for added clarity and definition on lower strings.
  • Experiment with picking dynamics to enhance the touch-sensitive response.

The original rig

What AC/DC used on the recording, for reference. ToneAdapt translates this to the controls your Positive Grid BIAS FX 2 actually has.

Guitar
Gibson SG Standard (1970s, likely '69-'73, stock humbuckers)
Amp
Marshall 1959 Super Lead 100-watt Plexi (1970s, 4-input, non-master volume, into Marshall 4x12 cabinet with Celestion G12M Greenback speakers)
Gain
4
Bass
4
Mid
7.5
Treble
4.5
Presence
5.5
Reverb
0
Full Back in Black tone breakdown, effects and sources →

Different guitar or pedals? Get Back in Black adapted to your exact rig

These settings were generated for the gear named above. ToneAdapt adapts AC/DC's tone to your own guitar, pickups, amp and pedals in seconds.

Frequently asked questions

What amp model should I use on the Positive Grid BIAS FX 2 for Back in Black?

Use the 69 Plexiglas V2 (Marshall Plexi) (crunch channel) with Drive 4, Master 7, Bass 4, Mid 7, Treble 5, Presence 5, followed by Vintage Overdrive, Vintage Spring HD.

Which pickup should I use for Back in Black?

Bridge pickup, with the guitar's tone at 7-8 and volume at 8-9.

What gear did AC/DC use on Back in Black?

Guitar: Gibson SG Standard (1970s, likely '69-'73, stock humbuckers). Amp: Marshall 1959 Super Lead 100-watt Plexi (1970s, 4-input, non-master volume, into Marshall 4x12 cabinet with Celestion G12M Greenback speakers).

Will these settings work with my guitar?

These settings were adapted for a Schecter Hellraiser C-1. Different pickups change how much gain and treble you need. ToneAdapt adapts the tone to your exact guitar, pickups, amp and pedals.

Popular songs on the Positive Grid BIAS FX 2

All 16 songs for the Positive Grid BIAS FX 2 →

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.