Detail 01
500W tube-hybrid design
Pairs a Class D power section with a tube preamp.
Product detailSKU #1500000325298
Gallien-KruegerFusion 500S 500W Tube Hybrid Bass Amp Head Black
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Independent shopping perspective
The Korena take
Fusion 500S is a 500-watt bass head that combines a Class D power section with a three-12AX7 tube preamp. One tube is assigned to the overdrive channel, which has its own tone shaping. The four-band tube-driven EQ and push-activated Bump, Contour, and Presence filters provide multiple onboard voicing controls. For routing, it includes a balanced DI selectable before or after EQ, an effects loop, aux and headphone connections, plus load selection for 2, 2.7, 4, and 8-ohm cabinets.
Strong match
Who this is for
- Bass rigs needing a 500-watt head with selectable load capacity for several cabinet impedance options.
- Stage or studio routing that benefits from a balanced DI, effects loop, aux input, and headphone connection.
- Players wanting dedicated tube-driven overdrive controls alongside four-band EQ and additional voicing filters.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Three 12AX7 preamp tubes
The preamp includes one tube dedicated to the overdrive channel.
Detail 03
Balanced DI with pre/post EQ
The DI can be set to take its signal before or after the EQ.
Detail 04
2, 2.7, 4, and 8-ohm load capacity
Supports selecting among those listed cabinet configurations.
Final check
Know before you order
- 01Match the connected cabinet configuration to one of the listed 2, 2.7, 4, or 8-ohm load options.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Does the Fusion 500S have a headphone connection?
Yes. It includes headphone and aux connections.
02How is its overdrive configured?
It has tube overdrive with tone shaping, and one of its three 12AX7 preamp tubes is dedicated to that channel.
03Can I use an effects loop?
Yes. An effects loop is included.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsSound
- Impedance
- 2, 2.7, 4, 8 ohm
- Power
- 500W (tube hybrid)
1 detailsBody & build
- Color
- Black
1 detailsOther
- Tubes
- three 12AX7 (preamp)
