Head to head
Ibanez SR305E vs Jackson Pro Series Signature Adam Blackstone "Gladys" Concert Bass V
The short answer is that they sit in different price brackets ($300 - $500 against $500 - $1,000), and the pickup layouts differ (HH against JJ). Below, every specification we hold for both instruments is lined up, with the 23 rows that actually differ marked out.
Pro Series Signature Adam Blackstone "Gladys" Concert Bass V
Black Stone
A session player's signature bass, not a metal bass with a famous name on it
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Score profile
Six editorial axes, overlaid. Where one shape sits outside the other, that is where the instrument gains ground.
- Ibanez SR305E8.7
- Jackson Pro Series Signature Adam Blackstone "Gladys" Concert Bass V8.8
Scores are Fretline editorial ratings on a 1-10 scale. They are our own assessment and are not supplied or endorsed by Amazon or by any manufacturer.
Specification by specification
| SR305E | Pro Series Signature Adam Blackstone "Gladys" Concert Bass V | |
|---|---|---|
| Brand | Ibanez | Jackson |
| Model | SR305E | Pro Series Signature Adam Blackstone "Gladys" Concert Bass V |
| Finish | Pearl White | Black Stone |
| Instrument | Bass | Bass |
| Fretline score | 8.7 / 10 | 8.8 / 10 |
| Value for money | 9 / 10 | 8 / 10 |
| Amazon rating | 4.3 / 5 (52) | 5.0 / 5 (1) |
| Price | $300 - $500 | $500 - $1,000 |
| Type | Electric bass | Electric bass |
| Body | SR solidbody | Concert Bass solidbody |
| Body wood | Okoume | Poplar |
| Neck joint | Bolt-on, five-piece | Bolt-on, graphite reinforced |
| Neck wood | Maple and walnut, five-piece (SR5pc) | Maple |
| Scale length | 34" (864 mm) | 34" |
| Fingerboard | Jatoba with white dot inlays | Maple with black block inlays |
| Radius | — | 9"-16" compound |
| Frets | 24 | 21 |
| Fret size | Medium | Jumbo |
| Bridge | Accu-cast B125, 16.5 mm string spacing | Jackson HiMass |
| Tuners | — | Open-gear |
| Neck pickup | PowerSpan Dual Coil (passive) | Custom Jackson BBE J-style single-coil |
| Bridge pickup | PowerSpan Dual Coil (passive) | Custom Jackson BBE J-style single-coil |
| Configuration | HH | JJ |
| Electronics | Ibanez Custom Electronics three-band EQ with three-way Power Tap switch | Active three-band EQ |
| Controls | Volume, pickup balancer, bass, middle, treble, Power Tap switch | Volume, pickup blend, bass, middle, treble |
| Orientation | Right-handed | Right-handed |
| Skill level | Beginner, Intermediate, Advanced | Advanced, Professional |
| Styles | Rock, Metal, Funk, Pop, Jazz, Indie | Funk, Pop, Rock, Jazz, Blues |
| In the box | — | — |
A marked row is one where the two differ. A highlighted cell is the stronger figure where one can be judged objectively. Empty cells are specifications the manufacturer does not publish — never estimates.
Which one should you buy?
Computed from the specifications and our editorial scores for these two instruments only. It is not a general ranking.
Best build
Jackson Pro Series Signature Adam Blackstone "Gladys" Concert Bass VHighest editorial build-quality score.
Best tone
Jackson Pro Series Signature Adam Blackstone "Gladys" Concert Bass VHighest editorial tone score.
Most versatile
Ibanez SR305EHighest editorial versatility score, backed by pickup layout and switching.
Most comfortable
Ibanez SR305EHighest editorial comfort score: neck profile, radius and body ergonomics.
Best for beginners
Ibanez SR305EStrongest overall score among the instruments we rate as beginner-friendly.
Best for rock
Jackson Pro Series Signature Adam Blackstone "Gladys" Concert Bass VStrongest overall score among the instruments suited to rock.
Best for the studio
Jackson Pro Series Signature Adam Blackstone "Gladys" Concert Bass VBuild and tone scores combined, with credit for tuning-stability hardware that matters when tracking.
Scores are Fretline editorial ratings on a 1-10 scale. They are our own assessment and are not supplied or endorsed by Amazon or by any manufacturer.
Want a third opinion?
The comparator takes as many instruments as you like, not just two, and recomputes the whole table and every conclusion as you add them.