The Ibanez SRMS720 proves you don’t need five or six strings to achieve modern extended-range tone. This 4-string multi-scale bass uses fanned frets (34.5″ low B side, 33.5″ high E side) and Fishman Fluence pickups to deliver extended range, tonal clarity, and playability in a compact footprint. At $1,299, it’s premium pricing, but the engineering justifies every dollar.
Multi-Scale: What and Why
Multi-scale (or fanned-fret) design places shorter strings on the higher-pitched side and longer strings on the lower-pitched side, matching the natural acoustics of pitch. On the SRMS720, the low B side reaches 34.5″ while the high E pulls back to 33.5″. This means the low B gets the tension and sustain of a traditional 35″ bass, while the high E avoids the floppiness of an overly long scale.
The result? Better intonation, improved low-end clarity, and a playability curve that feels natural once your hand adapts. It’s become standard on premium extended-range basses because it genuinely works.
Specs Breakdown
The Fishman Fluence Advantage
Fishman Fluence passive pickups are the gold standard in modern bass pickup design. They use stacked-coil topology to eliminate hum while maintaining classic passive warmth. The SRMS720 gets these in both positions, meaning consistent tone and articulation across the range. The bridge pickup has snap and punch for slapping and rhythmic clarity. The neck is warm and round for melodic playing.
At this price point, Fluence pickups feel genuinely luxurious. Many $1,299 basses cheap out on pickups; Ibanez invested where it counts.
Playability: The Fanned-Fret Learning Curve
If you’ve played traditional parallel-fret basses, the SRMS720 requires adjustment. Your hand position shifts slightly; chords feel angled. This takes 1–2 weeks to internalize if you’re an experienced player, longer for beginners. That said, once adapted, many players report the fanned design feels more ergonomic—your hand naturally follows the angle rather than fighting a parallel neck.
For another take on the Ibanez formula, check out the Ibanez SRMS725 Multi-Scale 5-String Bass.
The Ibanez Slim profile keeps the neck approachable even with the fanned design. It’s not a baseball bat; it’s thoughtfully tapered and fast.
Tone and Extended-Range Clarity
The SRMS720 sings. The 34.5″ scale on the B string means genuine low-end definition without flub. Tight, articulate, and musical. The high E doesn’t feel cramped; it’s bright and responsive. The Fishman Fluence pickups preserve string-to-string balance across all four strings, which is a challenge most bass pickups fumble.
For prog metal, fusion, and modern rock, this bass delivers. The ash body contributes brightness and snap; the multi-scale design ensures the extended low B doesn’t overshadow the mix. This is a studio and stage instrument.
Shoppers cross-shopping this model should also consider the ESP LTD Fred Leclercq FL-4 Bass.
Who Is It For?
Bassists who’ve outgrown traditional 4-string range but want the responsiveness and playability of a 4-string instrument. Prog metal and fusion players. Studio musicians valuing tonal versatility. Gigging bassists who need extended range for modern compositions without hauling a 5-string’s added bulk.
This isn’t a beginner bass. It’s a serious tool for serious musicians. If you’re contemplating a 5-string to access lower notes, the SRMS720 offers an alternative: keep the 4-string response and playability while accessing the B string’s range.
Comparison: SRMS720 vs. Alternatives
vs. Ibanez SRMS725 5-String ($1,399): The 5-string adds a high C and costs $100 more. If you want traditional 5-string versatility, the SRMS725 is the choice. If you want 4-string playability with extended low-end, the SRMS720 wins.
For a competing option, the Charvel San Dimas Bass PJ IV targets a similar player at a comparable price point.
vs. Dingwall Combustion 4 ($2,195): Dingwall is the premium multi-scale brand. The Dingwall costs nearly $1,000 more but offers wood selection, hand-crafted quality, and legendary resale value. For professionals, Dingwall. For serious amateurs and working players, the SRMS720 offers remarkable value.
Pros and Cons
Pros:
- Fishman Fluence pickups are industry-leading
- Multi-scale design improves low B and high E balance
- Extended range in 4-string form
- Ibanez Slim neck profile is fast and comfortable
- Premium hardware ensures long-term stability
- Lightweight ash body is comfortable for long sessions
Cons:
The Epiphone Mike Dirnt Grabber G-3 Bass is another model worth considering in this space.
- Fanned-fret design requires learning curve
- $1,299 price point is serious investment
- Limited finish options
- Resale market smaller than traditional 4-strings
- Not ideal for players who prefer neck-through construction
Bottom Line
The Ibanez SRMS720 multi-scale 4-string bass is an engineering triumph. If you need extended low-end range, want 4-string playability, and demand professional pickup quality, this is the instrument. The $1,299 price tag reflects premium components and innovative design. For working bassists and modern music creators, it’s an investment that pays dividends in tone and playability.
Rating: 4.5/5 stars — Best compact multi-scale 4-string bass on the market.
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