The Gallien-Krueger Fusion 800s is a Gallien Krueger amplifier. Close alternatives include the Gallien-Krueger Fusion 500 S and the Gallien-Krueger Fusion 1200s. It pairs well with the Ashdown Geezer Butler Signature and the Origin Effects DCX Boost.
Gallien-Krueger Fusion 800s
Gallien Krueger · amplifier
The Gallien-Krueger Fusion 800S is an 800-watt hybrid bass amplifier head from Gallien-Krueger, combining a tube preamp section with a high-power Class D solid-state power amp. The Fusion 800S offers significantly more headroom than the Fusion 500 for larger stage and outdoor performance. GK Fusion hybrid character — tube preamp warmth over GK solid-state punch — applies at the increased wattage for professional, demanding performance contexts.
What stands out
“GK Fusion hybrid character — tube preamp warmth over GK solid-state punch — applies at the increased wattage for professional, demanding performance contexts”
— from the listing
“The Fusion 800S offers significantly more headroom than the Fusion 500 for larger stage and outdoor performance”
— from the listing
“The 12AX7 tube preamp provides harmonic warmth and organic character over the high-power Class D power section, maintaining the Fusion tonal personality at increased output”
— from the reviews
“Lightweight Class D power section keeps the head portable despite high output capability”
— from the reviews
“More wattage than the Fusion 500 provides headroom for outdoor stages and large venues where the 500W version might clip at high output”
— from the community notes
- fusion
- stage
- hybrid
- headroom
- tube
- warmth
- tonal character
Good for
- Live
Genres the Gallien-Krueger Fusion 800s is commonly used in
- Jazz Fusion
cited
Inferred from shared tonal signals, not a stated genre tag. - Jazz
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. - Soul
cited
Inferred from shared tonal signals, not a stated genre tag. - Blues
cited
Inferred from shared tonal signals, not a stated genre tag.
Pedals that stack with the Gallien-Krueger Fusion 800s
Ashdown Geezer Butler Signature
Ashdown
22% matchclean platform takes the driveA clean, high-headroom stage takes on dirt it can't generate by itself. (high headroom → low gain)
Run Ashdown Geezer Butler Signature into that high headroom platform and it finally leans toward low gain
Goes in front of the amp
Origin Effects DCX Boost
Origin Effects
19% matchclean platform takes the driveA clean, high-headroom stage takes on dirt it can't generate by itself. (high headroom → low gain)
Run Origin Effects DCX Boost into that high headroom platform and it finally leans toward low gain
Goes in front of the amp
Beetronics Fatbee JFET Overdrive
Beetronics
19% matchclean platform takes the driveA clean, high-headroom stage takes on dirt it can't generate by itself. (high headroom → crunchy)
Beetronics Fatbee JFET Overdrive leans this high headroom tone toward crunchy, which it doesn't make on its own
Goes in front of the amp
Maestro PS-1A Phase Shifter
Maestro
11% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Keep Maestro PS-1A Phase Shifter after Gallien-Krueger Fusion 800s in the signal chain, clear of Gallien-Krueger Fusion 800s's own gain stage
Goes in front of the amp
Boss BC-1X
Boss
11% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (high headroom → compressed)
What Boss BC-1X brings here leans toward compressed — that's worth building a pairing around
Goes in front of the amp
Boss RV-6 Reverb
Boss
6% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Run Boss RV-6 Reverb in Gallien-Krueger Fusion 800s's effects loop, clear of Gallien-Krueger Fusion 800s's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Sits in the amp's effects loop
Strymon El Capistan dTape Echo
pedal
6% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Keep Strymon El Capistan dTape Echo in Gallien-Krueger Fusion 800s's effects loop, clear of Gallien-Krueger Fusion 800s's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Sits in the amp's effects loop
Friedman Small Box Overdrive
Friedman
tonal matchGoes in front of the amp
Gallien-Krueger Fusion 800s leans into a clean amp's front end, precisely the platform Friedman Small Box Overdrive wants
Alternatives
Gallien-Krueger Fusion 500 S
Gallien Krueger
65% similarity“More wattage than the Fusion 500 provides headroom for outdoor stages and large venues where the 500W version might clip at high output.”
Gallien-Krueger Fusion 1200s
Gallien Krueger
65% similarityShared character: fusion, tonal character, punch
Ampeg SVT-3PRO Bass Amplifier Head
Ampeg
55% similarityShared character: solid state, punchy, warm
Ampeg All-tube SVT
Ampeg
49% similarityShared character: punch, solid state, punchy
Hartke LH1000 Bass Head
Hartke
47% similarityShared character: solid state, punchy, headroom
Mesa Boogie Subway WD-800 Bass Head
Mesa Boogie
94% similaritysimilar tone character
See all alternatives to the Gallien-Krueger Fusion 800s (cheaper + boutique) →
Questions people ask
What are good alternatives to the Gallien-Krueger Fusion 800s?+
The closest matches in character are the Gallien-Krueger Fusion 500 S, the Gallien-Krueger Fusion 1200s, the Ampeg SVT-3PRO Bass Amplifier Head.
What pairs well with the Gallien-Krueger Fusion 800s?+
Strong matches from rig and tone-complementarity evidence: Ashdown Geezer Butler Signature, Origin Effects DCX Boost, Beetronics Fatbee JFET Overdrive — Run Ashdown Geezer Butler Signature into that high headroom platform and it finally leans toward low gain.