The Markbass Balanced Series Strings 4s 45-105 were designed in close collaboration with Italian bass legend Paolo "Pi" Costa to deliver a rich tone for Studio and stage. Thanks to the special studio tuning, in which the outer winding of Nickel Plated Steel is applied to several stainless steel windings, the Bass strings deliver a deep and warm sound with a rich overtone spectrum. In addition, the Markbass Balanced Strings are characterized by a balanced and smooth feel.
The Markbass Balanced Series Strings 4s 45-105 at a glance:
String set for 4-string electric basses with long scale.
Developed in cooperation with Paolo "Pi" Costa (a.o. Eros Ramazotti Band)
Studio-Tuned for a balanced sound and a consistent feel on all strings
Rotosound Bass Strings RS66LD 45-105 4-String
Sandberg Bass Strings 4-Set 045-105 (045-065-085-105)
Ernie Ball EB2840 Beefy Slinky Bass Strings 65-130
Sandberg Bass Strings 4-Set 040-100 
D'Addario Bass Strings XL Nickel 45-100 45-65-80-100, EXL170