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Jeff Ament Custom Warmoth/ESP Fretless

Jeff Ament Custom Warmoth/ESP Fretless

Find out who is using Jeff Ament Custom Warmoth/ESP Fretless

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Page last updated Aug 10, 2025

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Description

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Embrace the boundless tonal possibilities of the Jeff Ament Custom Warmoth/ESP Fretless Bass, a masterful collaboration that caters to discerning bassists craving a seamless, expressive playing experience. This unique fretless bass combines Warmoth’s precision craftsmanship with ESP’s innovative design, resulting in an instrument that is both a visual and sonic masterpiece.

The unlined fretless fingerboard is crafted for those who seek to explore the rich, smooth slides and harmonic richness that only a fretless can offer. Whether you’re drawing upon jazz, rock, or experimental genres, the Jeff Ament Custom provides the perfect canvas for your musical expression. The body and neck construction ensures optimal resonance and sustain, enhancing each note with clarity and depth.

Equipped with premium electronics, this bass delivers a versatile range of tones that can be tailored to any musical style. From deep, warm lows to crisp, articulate highs, it’s designed to bring out the best in your performance. The hardware is both durable and aesthetically appealing, ensuring that this instrument will stand the test of time both on stage and in the studio.

Key Features:

Unlined fretless fingerboard for seamless glissando and expressive play
Custom collaboration between Warmoth and ESP for superior craftsmanship
High-quality electronics for versatile tonal options
Durable hardware designed for longevity and performance stability
Ideal for a variety of musical styles, from jazz to rock and beyond

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Jeff Ament Custom Warmoth/ESP Fretless.

Build quality

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The ESP 400 series neck often features a signature glow-in-the-dark logo that is difficult to replicate, indicating authenticity.
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Some fretless ESP basses from the '80s era used a lawsuit-era Tele headstock, which is not seen on newer models.
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Mods and upgrades

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Original tuners likely featured Gotoh GB2 models; missing screw holes indicate non-original replacements.
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Features and functionality

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Early ESP fretless necks are known for their solid construction and quality, even when lacking a visible serial number or having a blank neck plate.
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Value and pricing

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Vintage ESP basses from the '80s, like the 400 series, can command high prices due to their reputation for quality despite being out of high demand.
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Artist usage

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Jeff Ament

Bassist

Pearl Jam

Verified via A2athot

A Warmoth Jazz body, Bartolini pickups, Fender tuners and an ESP neck were all assembled for Jeff by Mike Lull to make the bass that was used on most of the songs on Ten. (Including Even Flow, Alive, Black and several others.)