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Gallien-Krueger Fusion 500S 450-watt Ultra Light Bass Head

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Gallien-Krueger Fusion 500S 450-watt Ultra Light Bass Head

$1,199.00 Price Tier: High-end

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Page last updated Jul 07, 2026

Pricing and availability

We compare 600+ stores and found this item at 4 stores. Prices updated April 14, 2026.

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5.0 (3)

$1,199.00

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$1,199.00

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5.0 (3)

$1,199.00 New

$1,079.10 Used (Like New)

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5.0 (1)

$1,199.00

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Average Price: $1,199

High-end/Boutique

$200

$801+

Price Tier

In the Bass Amplifier Heads category, Gallien-Krueger Fusion 500S 450-watt Ultra Light Bass Head is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

Price History

Based on price data from 3 merchants for "Gallien-Krueger Fusion 500S 450-watt Ultra Light Bass Head". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Experience the perfect blend of vintage warmth and modern punch with the Gallien-Krueger Fusion 500S 450-watt Ultra Light Bass Head. This compact and lightweight bass amplifier head defines the intersection of classic tube tonality and cutting-edge class D technology, all packaged in an ultra-rugged metal enclosure built to withstand the rigours of the road.

The Fusion 500S boasts an all-tube preamp, powered by three 12AX7 tubes, including one dedicated to the overdrive channel, for a truly authentic, tube-driven overdrive. This, coupled with GK's classic 4-band EQ, allows you to sculpt your tone across a wide range of genres.

Adding a touch of sophistication and practicality, the Fusion 500S features illuminated push-activated knobs, perfect for dialing in your tone on dimly lit stages. The robust interconnection system, adopted from GK's Legacy Series, uses gold-plated connectors for a purer, more reliable sound.

Key Features:

Class D power amp with 450 watts of power
All-tube preamp with three 12AX7 tubes
GK’s first ever tube-driven overdrive channel
GK's classic 4 band EQ for ultimate tone shaping
Illuminated push-activated knobs
Robust interconnection system with gold-plated connectors
Balanced DI with Pre and Post EQ
Effects loop, aux and headphone connections
Load capacity selection for optimum power into 2, 2.7, 4 and 8-ohm cabinet configurations.

Product specs

Type	Hybrid
Number of Channels	Single Channel
Output Power	300W @ 4 ohms, 450W @ 2.7 ohms
EQ	4-band Active EQ, Bump, Contour, Presence Switches
Preamp Tubes	3 x 12AX7
Inputs	1 x 1/4", 1 x 1/8" (aux)
Outputs	2 x SpeakON (balanced), 1 x XLR (direct out), 1 x 1/4" (tuner)
Headphones	1 x 1/8"
Effects Loop	Yes
Footswitch I/O	1 x 1/4" (overdrive, tone control)
Footswitch Included	Yes, 1-button
Cooling System	2 x Internal Fans, Side Air Vent
Power Source	Standard IEC AC cable
Height	2.37"
Width	11.5"
Depth	11"
Weight	5 lbs.

FAQs

What kind of power output does the Gallien-Krueger Fusion 500S provide?: The Gallien-Krueger Fusion 500S offers a power output of 300 watts at 4 ohms and 450 watts at 2.7 ohms, making it suitable for a range of performance settings.
What type of tubes does the Gallien-Krueger Fusion 500S use in its preamp section?: The preamp section of the Gallien-Krueger Fusion 500S uses three 12AX7 tubes, contributing to its warm and dynamic sound character.
Does the Gallien-Krueger Fusion 500S include an effects loop?: Yes, the Gallien-Krueger Fusion 500S features an effects loop, allowing you to integrate external effects processors into your signal chain.
Is a footswitch included with the Gallien-Krueger Fusion 500S?: Yes, the Gallien-Krueger Fusion 500S comes with a 1-button footswitch for controlling overdrive and tone settings.
What are the main connectivity options on the Gallien-Krueger Fusion 500S?: The Gallien-Krueger Fusion 500S includes 1/4" and 1/8" inputs, SpeakON and XLR outputs, a 1/4" tuner output, and a 1/8" headphone jack for versatile connectivity.