Thomastik Infeld Flatwound Nickel Jazz Super Long Bass Strings; 44-136

Gauges: 44-57-72-96-136; Super Long Scale (36")

Thomastik-Infeld JF365 Jazz Flatwound bass strings are designed for extended-scale instruments requiring exceptional tonal depth, flexibility, and precision response. Built using Thomastik’s renowned round steel core construction and polished nickel flatwound surface, these strings deliver the warm, organic character associated with vintage jazz tones while maintaining remarkable sensitivity and dynamic control.

A premium flatwound set offering upright-inspired warmth, smooth feel, and exceptional responsiveness for extended-scale basses.

The freely vibrating round core allows the string to resonate without a preferred motion axis, producing balanced sustain and natural tonal development. A unique silk inlay between the windings enhances flexibility and contributes to the signature warm, organic voice, while colored silk-wrapped ends help secure the winding structure for long-term stability.

Designed with influences drawn from upright bass construction, the JF365 set produces deep fundamental tone, strong output, and a supple feel rarely found in traditional flatwound strings. Each string is handcrafted and individually inspected in Austria to Thomastik-Infeld’s exacting standards.

Features

• True polished nickel flatwound construction

• Round steel core for free vibration and balanced resonance

• Silk inlay between windings for flexibility and warmth

• Upright bass–inspired tonal character

• Smooth surface with minimal finger noise

• Colored silk-wrapped ends for winding stability

• Handcrafted and individually inspected

• Made in Austria

Specifications

• Model: JF365

• Series: Jazz Flatwound

• Instrument: Electric Bass Guitar

• Scale Length: Super Long Scale (36")

• Core: Round steel core

• Wrap Material: Polished nickel flatwound

• Tone Profile: Warm, deep, vintage jazz character with high sensitivity

• Origin: Austria