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Hiwatt Custom 100 Combo Amp

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Page last updated Aug 10, 2025

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Description

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The Hiwatt Custom 100 Combo Amp stands as an icon among guitar amplifiers, revered for its legendary point-to-point hand-wired construction. This powerful combo amp delivers the classic British tone that has defined countless rock anthems. With its robust build and meticulous craftsmanship, the Custom 100 Combo is as durable as it is sonically impressive.

Offering 100 watts of pure tube-driven power, this amp is equipped with four EL34 valves, delivering a dynamic range and a rich tonal palette that ranges from shimmering cleans to gritty overdrive. The amplifier's two channels provide versatility, allowing musicians to seamlessly switch between clean and overdriven sounds, making it suitable for a wide array of musical styles.

The paraphase inverter circuit is a standout feature, providing a unique gain structure that gives this amp its distinct tonal character. Guitarists who seek an authentic vintage sound will appreciate the responsive EQ controls, which enable precise tonal shaping. The built-in reverb adds depth and dimension, enhancing your performance whether you're on stage or in the studio.

Whether you're a seasoned performer or a tone enthusiast, the Hiwatt Custom 100 Combo Amp offers a premium option that brings vintage tone and modern reliability together in a single, impressive package.

Key Features:

100 watts of all-tube power with EL34 valves
Two channels for versatile tonal options
Built-in reverb for added depth
Paraphase inverter circuit for unique gain structure
Point-to-point hand-wired construction

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Nick Adams

Hiwatt Custom 100 - DR103 Combo From 1973 Analysis and Test

Nick Adams

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Hiwatt Custom 100 Combo Amp.

Comparisons

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Hiwatt amps are closer to a Vox AC-50 or early 60's Fender than a Marshall, offering a unique sound profile distinct from other brands.
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Old Laney amps with effective EQ can approach the Hiwatt sound, though not perfectly, providing loud cleans akin to the Hiwatt experience.
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Some owners prefer Biacrown-era models over Hylight due to their tonal preferences and volume handling.
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The amp's sound clarity surpasses that of an Egnater with V30 speakers, showcasing the unique tonal benefits of pairing with Fane speakers.
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Features and functionality

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Hiwatt amps maintain a sharp clean tone even at high volumes, avoiding the mushy low end typical of other tube amps.
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The EQ on a Hiwatt is adept at shaping guitar tones, revealing flaws in playing technique if present.
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The ability to link channels together with early models adds versatility, enhancing tonal options.
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The normal input channel provides a deeper low end, while the bright input offers a classic British rock sound, making it versatile for different musical styles.
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Use cases and applications

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Running the amp at high preamp and master volume settings, paired with a boost pedal, enhances aggression and takes fuzz pedals well.
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Known for taking effects exceptionally well, making it ideal for building a versatile pedal chain.
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The amp excels with clear T-type humbuckers, delivering a balanced tone suitable for rock genres, and handles effects like overdrive and sub-octave with impactful presence.
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Other

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Fane speakers in Hiwatt cabs contribute significantly to the distinctive Hiwatt sound, making them hard to replicate with alternative setups.
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Build quality

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The pots have a very even sweep, allowing for great sound at lower volumes, making it versatile for various settings.
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User experience

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The amp provides a legendary British sound, with a powerful clean tone reminiscent of iconic players like David Gilmour.
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Owners report the Hiwatt Custom 100 delivers intense, room-shaking volume even at settings as low as 4 on the dial, ideal for powerful live performances.
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Mods and upgrades

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Some users consider mods or input splitters to enhance channel functionality, although not feasible without modifications in certain versions.
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