Martin Retro and Authentic SP Light Acoustic Strings Bundle
- Two light-gauge sets: Retro and Authentic SP
- Retro: monel nickel-copper alloy, mellow tone
- Authentic SP: 92/8 phosphor bronze, bright tone
- Tension 162.91 and 168.5, units not stated
- Tin-plated core wires on the Authentic set
- Retro suits fingerstyle playing
Updated 23 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A bundle of two light-gauge acoustic sets: mellow, consistent Retro strings and bright, rich Authentic SP strings. Tension units are not stated, and the two sets use different alloys.
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ASIN: B0D59S2ZV5Category: Acoustic Guitar Strings
Overview
Pairing two Martin sets, this bundle puts mellow Retro strings made from a monel nickel-copper alloy beside bright Authentic phosphor bronze strings, both in a light gauge for acoustic guitar.
Players can try a warm, consistent voice and a brighter, richer one without picking a single set. Authentic strings add durability and tuning stability through wrap wire and tin-plated core wires. The limitation is that the title says phosphor bronze while one set is a different alloy.
Who it's for
Fingerstyle players of blues, Americana, country and bluegrass who like to swap tones, and anyone who wants both sets on hand. Electric players, or those who want only phosphor bronze, should look at a single set.
Pros and cons
- Two tonal options in one bundle
- Retro suits fingerstyle playing
- Authentic set offers tuning stability
- Corrosion resistance and extended life
- Bundle mixes two different alloys
- Tension units not stated
Performance notes
The monel nickel-copper Retro strings give a mellow, consistent tone that lets the natural wood tones resonate. The Authentic phosphor bronze set is brighter and richer, with slightly higher tension. Its construction is described as meant for corrosion resistance and a longer playing life.
Specifications
| Brand | Martin |
|---|---|
| Construction & materials | |
| String Material Type | Phosphor bronze (Authentic SP), monel nickel-copper (Retro) |
| Color | Bronze |
| Other details | |
| String Gauge | Light |
| Instrument | Acoustic guitar |
| Set Name | Retro and Authentic SP bundle |
| Sound Profile | Mellow, consistent, bright, rich |
| Core | Tin-plated core wires (Authentic) |
Frequently asked questions
Are the Martin Retro and Authentic SP strings for electric guitar?
No. They are light-gauge strings for acoustic guitar.
Can the Martin Retro and Authentic SP sets be used together on one guitar?
The listing sells them as a bundle of two sets for acoustic playing. It does not describe mixing strings on one instrument, so use one set per guitar.
What is the difference between the Martin Retro and Authentic SP strings?
Retro uses a monel nickel-copper alloy for a mellow, consistent tone. Authentic SP uses 92/8 phosphor bronze for a bright, rich tone and a slightly higher tension.