Electric guitars

Solar Guitars A1.7FRBOP Sustainiac+

A modern performance instrument for demanding players seeking infinite sustain and aggressive tone shaping.

★★★★★ 4.5/5 · 2 buyer reviews · 6 min read · updated 2026-10-06 · Tested by Cal Whitaker

Overview: Solar Guitars A1.7FRBOP Sustainiac+

The Solar Guitars A1.7FRBOP Sustainiac+ is positioned as a high-specification seven-string model designed for extended-range players with a focus on tonal flexibility and advanced electronics. Priced at 1555, this model brings together modern features in the familiar silhouette of a double-cutaway design. This analysis reviews the instrument strictly from its technical details and build choices, assessing the platform for demanding musicians.

Body and Neck Construction

This model's body is crafted from swamp ash, known for delivering a bright yet balanced tonal range with a strong low end and clear resonance. The absence of a top keeps the overall weight in check and offers a direct response. The neck uses roasted North American hard maple, a choice aimed at enhanced stability and resistance to environmental changes. A set-in construction bolsters sustain and upper fret access, key for intricate soloing.

The fingerboard is ebony, a preferred material for performance due to its hardness and slick surface, offering a fast tactile experience. Twenty-four frets are featured, and a 648-millimeter (25.5-inch) scale provides familiar string tension, particularly across the extended lower register of the seven-string configuration.

  • Body: Swamp ash
  • Neck: Roasted maple (set-in join)
  • Fingerboard: Ebony, 24 frets, custom Solar logo inlay at the twelfth fret
  • Fingerboard Radius: 400 mm (15.75 inches)
  • Scale Length: 648 mm (25.5 inches)

Hardware and Playability Features

The A1.7FRBOP Sustainiac+ is fitted with a Floyd Rose 1000 tremolo system, which includes a 34-millimeter sustain block. This system is favored in modern rock and metal settings and, combined with a locking nut, provides tuning stability under expressive pitch modulation. The Solar brand 18:1 locking machine heads further reinforce this stability, reducing string slippage during aggressive play or frequent tremolo use.

The matte black finish (Carbon Matte) and matching hardware create a unified, stealth aesthetic. The exclusion of a case or gig bag from the package is notable at this price point and should be considered by buyers who need ready protection for transportation.

  • Tremolo: Floyd Rose 1000 with locking nut and 34-mm sustain block
  • Machine Heads: Solar 18:1 locking tuners
  • Hardware: Black, coordinated with finish
  • Strings:.09,.62 gauge, nano carbon coated for enhanced longevity

Electronics and Controls

The dual humbucker configuration is the centerpiece of this guitar's specification. A Duncan Solar+ pickup occupies the bridge position, offering a contemporary output profile, suitable for articulate rhythms and lead phrases in a seven-string context. The neck position features the Sustainiac Stealth Pro humbucker, a specialized active unit enabling infinite sustain via an onboard driver system, a core feature for players interested in ambient effects, controlled feedback, or experimental performance techniques.

The control layout is comprehensive: one volume knob, a tone control with push/pull function for coil cutting, and a five-way blade selector switch provide access to a variety of single-coil and humbucker tones. Additional switches dedicated to the Sustainiac system allow the user to activate the driver and cycle through modes, granting further control over the shaping of sustained notes.

  • Pickups: Bridge, Duncan Solar+ humbucker, Neck, Sustainiac Stealth Pro humbucker
  • Active Circuitry: Yes, for both humbuckers and Sustainiac system
  • Controls: Volume, tone (with push/pull coil split), five-way selector, Sustainiac on/off and mode switches

Playability and Intended Use

The A1.7FRBOP Sustainiac+ is engineered for modern, technically demanding musicians. Key choices such as the slim C-shaped neck profile, flat fifteen-and-three-quarter inch fingerboard radius, and streamlined 25.5-inch scale contribute to fast action and clarity in tight chord voicings or rapid lead passages. The Floyd Rose 1000 system and robust locking hardware are intended to serve performing and recording guitarists who require stable tuning with heavy use of vibrato or drop-tuning for extended range music.

The advanced electronics additionally make this guitar well-suited for performance scenarios where sustain or tonal versatility is paramount, including progressive rock, metal, or experimental genres. The Sustainiac system's presence is a targeted solution for players who seek textural control beyond what is available on most production seven-string instruments.

Summary: Technical Strengths and Considerations

The Solar Guitars A1.7FRBOP Sustainiac+ brings together proven modern guitar construction with unique electronic capability. The use of swamp ash, roasted maple, and ebony speaks to a build designed for both stability and expressive nuance. The combination of a reliable Floyd Rose 1000 tremolo, advanced locking tuners, and an extended seven-string format forms a working platform for advanced players. The Sustainiac system remains a distinguishing element, expanding creative possibilities beyond the expectations of most standard instruments.

For users who value robust active electronics, strong tuning stability, and a wide palette of sounds in a contemporary format, the A1.7FRBOP Sustainiac+ stands out as a technical instrument designed to meet rigorous demands. Lack of a bundled case or bag is a practical limitation and should be considered in total cost. This is a guitar built for intricate performance and focused experimentation rather than for players seeking a traditional or minimalist setup.

Solar Guitars A1.7FRBOP Sustainiac+, front view
8.3/ 10 overall score
$1,555current price at the retailer
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Shipping and duties

The retailer ships from its warehouse in Germany. Prices are shown in US dollars and do not include import duties. Orders under roughly $800 usually clear US customs without duty; above that, a duty of a few percent may be collected on delivery. 30-day money-back and a 3-year warranty apply.

Scores by area

Where it shines, where it stumbles

What convinced me

  • Equipped with advanced Sustainiac Stealth Pro system for extended sustain and creative sound exploration
  • Floyd Rose 1000 tremolo enables expressive pitch modulation while maintaining tuning stability
  • High-quality materials including roasted maple neck and ebony fretboard ensure durability and smooth playability
  • Versatile pickup configuration with Duncan Solar+ humbucker and coil cut option for expanded tonal palette

What bugged me

  • No case or gig bag included at purchase price
  • Active electronics and Sustainiac system require battery maintenance
  • FR-Style tremolo may be complex for players unfamiliar with floating bridges
  • Limited color and top options; only available in Carbon Matte finish

Is it the right one for you?

Good pick if

Ideal for modern metal, rock, and experimental players seeking endless sustain, expressive tremolo, and high build quality. Excellent fit for technical musicians, recording artists, and live performers demanding stability and control.

Look elsewhere if

Not recommended for absolute beginners, players on a tight budget, or those uninterested in maintaining active electronics or double-locking tremolo systems. Also less suited to traditionalists prioritizing classic aesthetics or passive pickups.
MetalProgressive RockExperimental

Suggested level: Intermediate

Solar Guitars A1.7FRBOP Sustainiac+, $1,555Affiliate link, your price does not change.Check today's price →

Specifications

Shape
ST-Style
Color
Black
Body
Swamp Ash
Top
None
Neck
Maple
Fretboard
Ebony
Frets
24
Scale
648 mm
Pickups
H, Sustainiac
Active pickups
Yes
Tremolo
FR-Style
Including case
No
Incl. bag
No
Pickup system
H, Sustainiac

Up close

Solar Guitars A1.7FRBOP Sustainiac+, detail 2Solar Guitars A1.7FRBOP Sustainiac+, detail 3Solar Guitars A1.7FRBOP Sustainiac+, detail 4Solar Guitars A1.7FRBOP Sustainiac+, detail 5

Watch and listen

Watch the video demo on YouTube →

Questions players ask

Does the guitar come with a case or gig bag?

No, the Solar Guitars A1.7FRBOP Sustainiac+ does not include a case or gig bag. These must be purchased separately.

Is the Sustainiac system difficult to use for beginners?

The Sustainiac system is user-friendly but may require some initial learning for those new to sustain-controlled effects. However, basic functions are intuitive.

How versatile is the pickup configuration?

The combination of a Duncan Solar+ humbucker with coil cut and the Sustainiac neck pickup offers a broad range of tones, from heavy distortion to articulate cleans and infinite sustain.

Can the Floyd Rose tremolo stay in tune during aggressive use?

The Floyd Rose 1000 tremolo unit with locking nut and high-ratio machine heads provides strong tuning stability even with heavy tremolo use.

Does the guitar require special maintenance?

Beyond standard setup and string care, the active electronics and Sustainiac require periodic battery checks and replacement for optimal operation.

The last word from the bench

The Solar Guitars A1.7FRBOP Sustainiac+ combines premium hardware, innovative electronics, and solid construction, positioning itself as a forward-thinking choice for serious guitarists. The Sustainiac system and versatile controls allow for both traditional and experimental sounds. Despite a higher price and lack of inclusive accessories, its performance, reliability, and tonal flexibility justify the investment. It's best suited for those who want to push sonic boundaries on stage or in the studio.

Solar Guitars A1.7FRBOP Sustainiac+, $1,555Affiliate link, your price does not change.Check today's price →

Hanging next to it

Before you decide

Solar Guitars A1.7FRBOP Sustainiac+

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