CRT Coated Phosphor Bronze Acoustic Guitar Strings

Phosphor bronze with corrosion-resistant technology. The same warmth and feel as uncoated, with a longer usable life.

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S.I.T. CRT Coated Phosphor Bronze Acoustic Guitar Strings – 10–47 (CP1047 Extra Light)
CRT Coated Phosphor Bronze Acoustic Guitar Strings – 10–47 (CP1047 Extra Light) Sale price$14.99
S.I.T. CRT Coated Phosphor Bronze Acoustic Guitar Strings – 11–52 (CP1152 Pro Light)
CRT Coated Phosphor Bronze Acoustic Guitar Strings – 11–52 (CP1152 Pro Light) Sale price$14.99
S.I.T. CRT Coated Phosphor Bronze Acoustic Guitar Strings – 12–53 (CP1253 Light)
CRT Coated Phosphor Bronze Acoustic Guitar Strings – 12–53 (CP1253 Light) Sale price$14.99
S.I.T. CRT Coated Phosphor Bronze Acoustic Guitar Strings – 12–56 (CP1256 Bluegrass)
CRT Coated Phosphor Bronze Acoustic Guitar Strings – 12–56 (CP1256 Bluegrass) Sale price$14.99
S.I.T. CRT Coated Phosphor Bronze Acoustic Guitar Strings – 13–56 (CP1356 Medium)
CRT Coated Phosphor Bronze Acoustic Guitar Strings – 13–56 (CP1356 Medium) Sale price$14.99
S.I.T. CRT Coated Phosphor Bronze 12-String Acoustic Guitar Strings – 10–47 (CP12-1047 Light)
CRT Coated Phosphor Bronze 12-String Acoustic Guitar Strings – 10–47 (CP121047 Light) Sale price$24.99

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About CRT Coated Phosphor Bronze

CRT Coated is phosphor bronze with Corrosion Resistant Technology. The treatment protects the string from sweat, moisture and buildup, so a set holds its tone and feel for longer. Nothing else changes: the same phosphor bronze wrap over a high carbon steel hex core, the same warm highs and full low end.

It earns its place if you play often, sweat a lot, live somewhere humid, or simply resent changing strings. Acoustic guitars are also the ones most likely to sit out on a stand between sessions, which is exactly where a coated set pays for itself. Uncoated phosphor bronze still feels fractionally more open to some players, which is why we make both.

Choosing a gauge

.012–.053 (CP1253 Light) is the balanced starting point. For an easier feel, .010–.047 (CP1047 Extra Light) is the lightest, with .011–.052 (CP1152 Pro Light) between the two. For a light top over a heavier bottom, .012–.056 (CP1256 Bluegrass) is built for flatpicking, and .013–.056 (CP1356 Medium) is the heaviest six-string for maximum volume. Twelve-string players have .010–.047 (CP121047 Light).

Gauges

Set Gauges
.010–.047 — CP1047 Extra Light .010 .014 .023 .030 .039 .047
.011–.052 — CP1152 Pro Light .011 .015 .022 .032 .042 .052
.012–.053 — CP1253 Light .012 .016 .024 .032 .042 .053
.012–.056 — CP1256 Bluegrass .012 .016 .026 .035 .045 .056
.013–.056 — CP1356 Medium .013 .017 .026 .035 .045 .056
12-string .010–.047 — CP121047 Light .010 .014 .023 .030 .039 .047
.010 .014 .009 .012 .018 .027

On the 12-string set the first line is the main course and the second is the paired course — unison on the top two strings, octaves on the bottom four.

How CRT Coated compares to our other acoustic sets

CRT Coated is the long-life option. Phosphor Bronze is the same wrap uncoated. Golden Bronze 80/20 is brighter and crisper, Royal Bronze fuller, and American Roots Monel drier and more vintage. Semi-Flat Silencers 80/20 cut finger noise rather than extending string life.

Frequently asked questions

What are coated acoustic guitar strings?

CRT Coated is phosphor bronze with Corrosion Resistant Technology, which protects the string from sweat, moisture and buildup so it lasts longer. See CRT Coated Phosphor Bronze.

Are coated acoustic strings worth it?

They pay off most on guitars that sit out between sessions, and for players who sweat or live somewhere humid. See are coated strings worth it.

Do coated strings sound different from uncoated phosphor bronze?

It is the same phosphor bronze wrap with the same warm tone. Some players feel uncoated Phosphor Bronze is slightly more open, which is why we make both.

What gauge should I use?

.012–.053 (CP1253 Light) is the starting point, and .010–.047 (CP1047 Extra Light) is the easiest to play. Coated gauges differ slightly from our uncoated sets, so check the gauge table above.

Made in the USA.