The Positive Grid Bias Head 600W Amp Match Guitar/Bass Head is a Positive Grid amplifier. It pairs well with the Ibanez Tube Screamer and the Ashdown Triple Shot.
Positive Grid Bias Head 600W Amp Match Guitar/Bass Head
Positive Grid · amplifier
The Positive Grid BIAS Head is a 600-watt amp-match modelling head for guitar or bass, built around the company's BIAS amp-matching technology, which analyses a target amplifier and reproduces its response rather than offering only fixed presets. The very high power rating reflects a Class D output section driving conventional cabinets, so it functions as a modelling preamp and power amp in one rather than as a practice device. That distinguishes it from the Spark range, which is app-based practice amplification. It suits players who want matched amp models driving real cabinets at stage volume.
What stands out
“The Positive Grid BIAS Head is a 600-watt amp-match modelling head for guitar or bass, built around the company's BIAS amp-matching technology, which analyses a target amplifier and reproduces its response”
— from the listing
“It suits players who want matched amp models driving real cabinets at stage volume”
— from the listing
“Bought by players who want amp modelling through a real cabinet , and the amp-match feature is the distinguishing capability, letting a target amp be profiled”
— from the community notes
“The main caveat is that amp-matching results depend heavily on the quality of the capture, so expectations should be set accordingly”
— from the community notes
“The very high power rating reflects a Class D output section driving conventional cabinets, so it functions as a modelling preamp and power amp in one”
— from the listing
Trade-offs
“which is app-based practice amplification”
— from the listing
- bass
- high gain
- modern
- vintage
- amp in
- clean
- stage
Good for
- Live
- Silent Recording
- Silent Stage
- Studio
Genres the Positive Grid Bias Head 600W Amp Match Guitar/Bass Head is commonly used in
- Metal
cited
Inferred from shared tonal signals, not a stated genre tag. - Christian Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Alternative
cited
Inferred from shared tonal signals, not a stated genre tag. - Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Hard Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Progressive Rock
cited
Inferred from shared tonal signals, not a stated genre tag.
Pedals that stack with the Positive Grid Bias Head 600W Amp Match Guitar/Bass Head
Ibanez Tube Screamer
Ibanez
36% matchpushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)
The BIAS Head's modern, high-gain amp-match platform gives the Screamer's mid-forward boost a versatile amp voice.
Goes in front of the amp
Ashdown Triple Shot
Ashdown
32% matchgain stackingStacks two gain stages for more saturation than either produces alone. (mid-forward → high gain)
The BIAS Head's modern, high-gain platform gives the Triple Shot's driven midrange overdrive a versatile amp voice.
Goes in front of the amp
Electro-Harmonix Electric Mistress
Electro-Harmonix
27% matchRun mid-forward into Positive Grid Bias Head 600W Amp Match Guitar/Bass Head for more high gain on top
Goes in front of the amp
Klon Centaur
Klon
27% matchpushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)
Feed a high gain signal into Klon Centaur and it comes out closer to mid-forward
Goes in front of the amp
Suhr Shiba Drive
Suhr
26% matchpushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)
The BIAS Head's modeled, high-gain platform gives the Shiba Drive's vintage, articulate overdrive somewhere modern to push.
Goes in front of the amp
Boss ODB-3
Boss
24% matchgain stackingStacks two gain stages for more saturation than either produces alone. (low gain → high gain)
Positive Grid Bias Head 600W Amp Match Guitar/Bass Head leans this low gain tone toward high gain, which it doesn't make on its own
Goes in front of the amp
Strymon Eventide TriceraChorus
Strymon
24% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → lush)
Strymon Eventide TriceraChorus's modulated voice goes after Positive Grid Bias Head 600W Amp Match Guitar/Bass Head in the signal chain — it's not there to compete with Positive Grid Bias Head 600W Amp Match Guitar/Bass Head's own high gain character
Goes in front of the amp
Electro-Harmonix Nano Operation Overlord
Electro-Harmonix
23% matchclean platform takes the driveA clean, high-headroom stage takes on dirt it can't generate by itself. (transparent → high gain)
Into a transparent tone, Positive Grid Bias Head 600W Amp Match Guitar/Bass Head brings a pull toward high gain that's missing
Goes in front of the amp
See all 65 pedals that pair with the Positive Grid Bias Head 600W Amp Match Guitar/Bass Head →
Questions people ask
What pairs well with the Positive Grid Bias Head 600W Amp Match Guitar/Bass Head?+
Strong matches from rig and tone-complementarity evidence: Ibanez Tube Screamer, Ashdown Triple Shot, Electro-Harmonix Electric Mistress — The BIAS Head's modern, high-gain amp-match platform gives the Screamer's mid-forward boost a versatile amp voice..