Thomastik-Infeld JF345 Jazz Flatwound Bass Strings (43–136)

The Thomastik-Infeld JF345 Jazz Flatwound Bass Strings are designed to deliver a classic jazz tone with exceptional depth and clarity. With gauges of .043 / .056 / .070 / .100 / .136, these strings feature a ribbon-flat nickel alloy winding over a highly pliable steel core, wrapped with a silk inlay. This construction provides a smooth, glassy feel and a warm, organic tone reminiscent of upright bass strings. Ideal for jazz, blues, and classic rock genres, the JF345 offers excellent sustain and a balanced response, making it a favorite among professional bassists.

Key Features

• Gauge: .043 / .056 / .070 / .100 / .136
• Ribbon-flat nickel alloy winding over a highly pliable steel core
• Silk inlay for enhanced flexibility and tone warmth
• Smooth, glassy feel with a warm, organic tone
• Ideal for jazz, blues, and classic rock genres
• Excellent sustain and balanced response