Comparison of strings based on the winding material used for wound strings.

String Comparison: SIRIUS® PB vs. SIRIUS® Gold

Feature	SIRIUS® PB (phosphor bronze)	SIRIUS® Gold (80/20 bronze)
Box design
Alloy type	Phosphor bronze (warmer tone); Web pictogram: Ovinuté fosfor bronzí Phosphor bronze wound	80/20 bronze (brighter tone); Web pictogram: Ovinuté bronz 80/20 Bronze 80/20 wound
Core wire	Hexagonal stainless steel; Web pictogram: Hexagonální nerezavějící ocel Hexagonal stainless steel	Hexagonal stainless steel; Web pictogram: Hexagonální nerezavějící ocel Hexagonal stainless steel
Surface treatment	Modern nano protective coating (against oxidation and corrosion)	Modern nano protective coating (against oxidation and corrosion)
Sound character	Warm, balanced, rich midrange	Bright, ringing, pronounced highs
Playing feel	Softer, smoother under the fingers	Firmer, sharper tactile feel
Playing style	Ideal for fingerstyle, folk, delicate playing	Perfect for strumming, bluegrass, country
Dynamic response	Easy dynamic control, subtle nuances	Strong attack, punchy strumming response
Sustain	Longer tone sustain	Short, punchy sustain
Fret wear	Softer alloy – lower fret wear	Harder alloy – higher fret wear