Practice What You Preach amp settings — Line 6 Spider iv 75
The Testament guitar tone for “Practice What You Preach”, dialed in for a Line 6 Spider iv 75 with a Kramer Striker HSS. Studio album cut, Practice What You Preach (1989) - Main Rhythm & Riff
Ibanez Saber 540S (bridge humbucker) -> Tube Screamer / TC Electronic Booster -> ADA MP-1 preamp -> Marshall JCM800 / Super Lead power section -> Marshall 4x12 cab (Celestion G12M / G12T-75)
| Knob | Setting (0–10) |
|---|---|
| Gain | 6 |
| Bass | 5 |
| Mid | 7 |
| Treble | 6 |
| Reverb | 0 |
| Master | 5 |
01Boss SD-1 Super Overdrive
Used as classic thrash clean boost in front to tighten low end and add mid punch
02MXR M108S Ten Band EQ
Post-drive mid push mimicking Skolnick Furman/ADA EQ focus
03Boss NS-2 Noise Suppressor
Keep riff mutes sharp and control high-gain preamp hiss
The Spider IV 75 runs hot on modern voicings, so amp gain is kept moderate at 6 while the SD-1 acts as a front-end tighten boost rather than primary distortion. The MXR 10-band boosts around 1k-2kHz to replicate Alex's focused rack preamp bite without letting the digital high end get fizzy. The Spider IV 75 faceplate lacks a dedicated presence knob, so all high-frequency cut is balanced between the treble knob and the 4kHz/8kHz EQ sliders.
Get this tone on your amp
These settings are for a Line 6 Spider iv 75. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.
Get ToneAdapt on Google PlaySong, artist and gear names are used to identify the tone being matched; ToneAdapt is not affiliated with or endorsed by the artists or manufacturers mentioned. Settings are AI-generated starting points — trust your ears.