Rotosound SH77 Steve Harris Signature (.050–.110): the Iron Maiden Monel flatwound
Reviewed by the Change Your Strings editorial team ·
Rotosound SH77 is the Steve Harris signature heavy flatwound, .050 to .110, Monel 400 wrap on hex steel core, long-scale 4-string. The Iron Maiden gallop runs on this set: heavy gauge for the speed-pick attack across Maiden's catalog, Monel flatwound for the dark, thick, compressed midrange that sits below the twin-guitar harmony layer. Bass Player Magazine has named SH77 their favorite flatwound. Pick this set when you want vintage flatwound thump with the heaviest gauge profile in production, the exact lane Harris occupies.
Anatomy
- Model
- Rotosound SH77 Steve Harris Signature Monel Flatwound
- Standard family
- Rotosound 77 Jazz Bass Flatwound (Monel)
- Variants
- RS77LD light (.040–.090), RS77LE (.045–.105), RS77 (.045–.105 long), SH77 (.050–.110, this set, signature)
- Gauge
- .050 – .110 (Heavy)
- Gauge set
- .050, .075, .095, .110
- String count
- 4 strings
- Core wire
- Hex steel
- Wrap wire
- Monel 400 nickel-copper alloy, polished flatwound
- Coating
- None, uncoated
- Winding
- Polished flatwound
- Intended scale
- Long-scale (34") fits Fender Precision (Harris's main rig), Jazz, Music Man, and most production 4-string basses
- Intended tunings
- Bass E standard primary; handles Drop D and Eb standard with the heavy gauge
- Tension behavior
- Heavy tension; firm under pick attack, dark and compressed under fingerstyle
- Made in
- United Kingdom
- Package
- Single pack, signature artwork
Why this is the heavy-metal flatwound default
- Signature SKU
- Rotosound built SH77 around Steve Harris's Iron Maiden specification. The relationship is current and documented on the Rotosound roster page; the signature set is the only heavy-gauge Monel flatwound in production.
- Monel alloy
- Nickel-copper Monel 400 wrap delivers darker, more compressed mid-range than stainless flat. Sits below the twin-guitar harmony layer in heavy-metal mixes without fighting the rhythm guitar's mid-frequency band.
- Heavy gauge
- .110 low-E is two gauges heavier than the standard bass medium. Speed-picked attack across Maiden's gallop tempos needs the heavier gauge for definition under high-speed sixteenth notes.
- Bass Player Magazine pick
- Bass Player named SH77 their favorite flatwound. Working bassists across heavy-metal, prog, and rock cite the set as the standard for Monel flat tone.
Tone
The SH77 sounds like the canonical Iron Maiden bass: dark, compressed, mid-forward, with the polished flatwound feel that lets pick-played sixteenths cut through a dense twin-guitar harmony mix without harsh upper-harmonic content. Monel's nickel-copper alloy is a key part of the signature; stainless flat (Rotosound 77 Jazz Bass standard) is brighter and more aggressive on top, where Monel sits darker and warmer.
Compared to the other Tier-1 bass flatwound sets:
| Rotosound SH77 | La Bella 760FL Deep Talkin' Flats | Rotosound 77 Jazz Bass | |
|---|---|---|---|
| Wrap material | Monel 400 | Stainless steel flat | Stainless steel flat |
| Gauge profile | Heavy (.050–.110) | Light (.043–.104) | Medium (.045–.105) |
| Brightness | 3/10 | 2/10 | 4/10 |
| Best for | Heavy metal, hard rock | Motown, vintage R&B | Jazz, fusion, indie |
| Price tier | $$ | $$$ | $$ |
| Documented users | Steve Harris (Iron Maiden) | James Jamerson (historical) | Standard British session |
Best for
- Heavy metal with twin-guitar harmonies where the bass needs dark mid-forward weight without fighting the guitar layer (Steve Harris's lane on Iron Maiden's catalog).
- Hard rock and prog with pick-played sixteenths at speed.
- Vintage rock with Precision Bass and tube amp that wants flatwound feel and heavy mid-range thump.
- Players who want flatwound tone in heavy gauge without specialty boutique pricing.
Worst for
- Slap and funk where flat tops kill the snap entirely (use GHS Boomers).
- Modern bright pop and country where you want top-end roundwound brightness (use Fender 7250 or Rotosound 66).
- Beginners without truss-rod adjustment experience; .110 low-E adds significant tension to a stock bass setup.
Who plays them
- Steve Harris (Iron Maiden): signature artist on the Rotosound roster, the SH77 is built around his exact gauge specification. See the Steve Harris rig page for full sourcing.
- Heavy-metal session bassists who want flatwound feel without sacrificing the heavy gauge needed for fast picking.
- Rock and prog players who admire Maiden's bass tone and want to chase it directly.
Install and break-in
- Set the bass on a neck rest. Loosen all strings evenly before removing.
- Wipe the fretboard with a dry cloth.
- Install top-down. Heavy gauge means tuning post wraps need careful management; leave 2 wraps per post.
- Truss-rod adjustment is likely after install. The .110 low-E adds significant tension over a .105 standard set; check neck relief at the 7th fret with the bass tuned to pitch.
- Break-in: flatwound sets work-harden into their tone over the first 4 to 8 hours of play. Initial brightness will fade quickly; the working tone settles by hour 8.
Verdict
The SH77 is the heavy-metal answer to flatwound bass: the signature pack with Harris's name on it, the only heavy-gauge Monel flat in standard production, and the strings behind one of the most-imitated bass tones in metal. If you want Iron Maiden's bass voicing on your rig, this is the answer. If you want lighter flatwound feel or a different alloy, see the comparison row above and step to La Bella 760FL or Rotosound's standard 77 Jazz Bass respectively.
Related
- The bassist on this set: Steve Harris, Iron Maiden's bassist and founder since 1975.
- Brighter Rotosound alternative: Rotosound Swing Bass 66 review, stainless roundwound for cut and complexity.
- Lighter flatwound alternative: La Bella 760FL Deep Talkin' Flats review, stainless flat for vintage Motown lane.