Gear article

D'Addario XT Light Top/Medium Bottom Bass Strings 45-105

The D'Addario XTB45105 is a premium set of nickel-plated steel bass strings featuring a specialised thin treatment for extended life. Engineered for durability and tuning stability, these hybrid-gauge strings are designed to offer a punchy, bold tone suitable for professional performance.

See live prices

Overview

The D'Addario XTB45105 XT Light Top/Medium Bottom set represents a modern evolution in bass string technology. Combining the traditional feel of nickel-plated steel (NPS) with a microscopic treatment process, these strings aim to provide the longevity associated with coated strings while maintaining the natural feel of an untreated set. The hybrid 'Light Top/Medium Bottom' gauge (45-105) provides a balance between flexible high strings for melodic playing and thicker low strings for a firmer, punchier low end.

Engineering and Construction

D'Addario employs specific engineering techniques to enhance the structural integrity of the XT series. According to the manufacturer, these strings are up to 42 percent stronger than standard alternatives and offer a 131 percent improvement in tuning stability. The core and wrap wire are treated with a proprietary XT coating, which serves as a barrier against the oils and moisture that typically lead to corrosion and tonal degradation.

Tonal Character and Feel

Marketed as 'bold and booming', these strings are designed to produce a punchy output that suits various musical genres. The nickel plating provides a classic magnetic response that is bright but warmer than pure stainless steel. The XT treatment is applied to be unobtrusive, ensuring that the strings do not feel slippery or 'plastic-like,' which is a common complaint with traditional heavy coatings.

Target Audience

The XTB45105 set is positioned for professional performers who require consistent performance across multiple shows or recording sessions. Because of the hybrid gauge, they are particularly well-suited to players who find standard light sets too 'floppy' on the E string or standard medium sets too stiff for bends on the G and D strings. At a typical price point of approximately GBP 26, they represent a premium investment for players seeking to reduce the frequency of string changes.

Comparison to Alternatives

Compared to standard nickel-plated strings, the XT series offers significantly higher durability and tuning stability. When measured against other premium options, such as the Ernie Ball M-Steel or Slinky series, the D'Addario XT focuses specifically on the 'treated' aspect for longevity. While D'Addario also produces classical and orchestral strings like the Zyex or Helicore series for violins, the XT range is specifically tailored for the high-tension demands of modern electric bass guitars.

Related gear

Frequently asked questions

What gauges are included in the XTB45105 set?
The set includes gauges .045, .065, .085, and .105. This configuration is known as 'Light Top/Medium Bottom', providing a hybrid feel for the player.
How does the XT treatment differ from traditional coatings?
The XT treatment is a microscopic layer applied to the string to prevent corrosion without compromising the natural feel. It is designed to be thinner and less intrusive than standard plastic coatings.
What is the primary material used in these strings?
These strings are made from nickel-plated steel wound over a high-carbon steel core. This combination provides a balance of magnetic output and durability.
How much stronger are these compared to regular strings?
Manufacturer testing indicates that XT strings are up to 42 percent stronger than standard, untreated strings. This reduces the likelihood of breakage during aggressive playing.
Do these strings help with tuning stability?
Yes, D'Addario claims these strings stay in tune 131 percent better than regular strings. This is achieved through enhanced manufacturing tolerances and core wire quality.
What kind of tone can I expect from the XTB45105 set?
The tone is described as bold, booming, and punchy. The nickel plating ensures a bright sound that retains enough warmth for versatile basslines.
Is this set suitable for 5-string basses?
No, the XTB45105 is a 4-string set. Players with 5-string basses would need to purchase a specific 5-string XT set that includes a low B string.
What is the typical price for these strings in the UK?
The typical price range for this specific set of strings is approximately GBP 26. This reflects their position as a premium, long-life product.
Who is the ideal user for the Light Top/Medium Bottom gauge?
It is ideal for performers who want the ease of playability for high-register notes but require a tighter, more resonant feel for their low-end foundation.
Can these strings be used for all genres of music?
Yes, their punchy and versatile nickel-plated tone makes them suitable for everything from rock and pop to funk and jazz. The extra durability is beneficial for touring musicians in any genre.
How do these compare to D'Addario's orchestral strings like Helicore?
XT strings are designed for electric bass guitars and feature a round-wound construction with a treatment for longevity. Helicore strings are specifically engineered for orchestral instruments like violins and use different core technologies.
Do these strings feel different under the fingers than normal strings?
While they are treated, they are designed to feel like fresh, uncoated strings. They lack the slippery or 'slick' texture often associated with thicker polymer coatings.