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SWR SM-500

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Page last updated Aug 10, 2025

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Description

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Experience the power and precision of the SWR SM-500, an iconic bass amplifier head that has been a staple in the music industry for years. Renowned for its transparent sound, this amp head is engineered to deliver a wide range of tones, allowing bassists to sculpt their sound with unmatched clarity. The SWR SM-500 combines classic design with modern functionality, making it a versatile choice for both studio recordings and live performances.

With its dual power amplifiers, the SM-500 offers an exceptional stereo output, enhancing the depth and dimension of your bass lines. The amplifier's flexible EQ section provides comprehensive tone-shaping capabilities, featuring a 3-band semi-parametric EQ and an Aural Enhancer control, which helps emphasize the mid-range frequencies for a fuller sound. Whether you're laying down smooth jazz grooves or driving rock riffs, the SWR SM-500 ensures your bass cuts through the mix with authority.

Built to withstand the rigors of touring, this amp head is equipped with a robust cooling system to maintain optimal performance during long sessions. The SWR SM-500 also includes a stereo effects loop and a balanced XLR output, making it easy to integrate with your existing gear.

Key Features:

500 watts of power at 4 ohms (bridged mode)
Dual power amplifiers for stereo output
3-band semi-parametric EQ for versatile tone shaping
Aural Enhancer for mid-range frequency emphasis
Stereo effects loop for integration with external effects
Balanced XLR output for direct connection to PA systems
Durable design with an efficient cooling system

Videos

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BENNY L TOBING

REVIEW AMPLI BASS SWR SM-500 HEAD-CABINET 4X10 INCH

BENNY L TOBING

SWR SM-500 TUBE BASS HEAD MADE IN USA & SWR WORKING PRO 4x10 BASS CABINET MADE IN MEXICO #shorts

MOUSIKE STORE

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about SWR SM-500.

Features and functionality

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The SWR SM-500 is loud enough to fill a practice space with a master volume setting at just 3, effectively drowning out guitars and drums.
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The SWR SM-500 is noted for producing a clear low end that requires larger or mixed speaker setups to fully translate its depth and punch.
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The SWR SM-500 is praised for its clean and even sound output, even at high volume levels, appealing to those seeking clarity.
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Mods and upgrades

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Using a Darkglass B3K pedal is recommended for adding overdrive, providing a more responsive and tunable sound compared to the Boss ODB-3.
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Comparisons

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The Darkglass B3K is noted for its superior clean blend functionality and adaptability, outperforming both the TS9B and Boss ODB-3.
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The SWR red face is described as having little low end but a bright, clear sound, contrasting with the warmer Peavey amps.
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Some owners prefer SWR for its subtle control options and clean sound over Gallien-Krueger’s more tweakable Backline series.
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Use cases and applications

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The SWR SM-500 is used in punk band setups, where its powerful output can rattle walls in a warehouse practice space.
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Users highlight the amp's suitability for pairing with SansAmp Bass Drivers for enhanced sound shaping options.
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User experience

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Owners report that the preamp tube in the SM-500 doesn't break up as much as desired, affecting the amp's grit and distortion levels.
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Some owners find the SWR amps to have a nasal tone when settings are neutral and prefer them for slap bass with new strings.
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The SWR SM-500's tube preamp and solid-state power design is appreciated for being a cost-effective and lightweight compromise.
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Setup and maintenance

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Users recommend using a 1x15 cabinet alongside a 4x10 for optimal low-end clarity and punch with the SWR SM-500.
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Value and pricing

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Owners find the SWR SM-500 more affordable than equivalent Ampeg models, offering good value for its quality.
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Thomas Ramdhan

Bassist

GIGI

Verified via YouTube

In the video titled "Dapoer Gear (eps 36) - Thomas Ramdhan," available on YouTube by DAPOER GEAR, Thomas Ramdhan mentions using the SWR SM-500 for the dry channel in his old setup.