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Sire GB5 Series 5 String Acoustic Bass

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Sire GB5 Series 5 String Acoustic Bass

The Sire Marcus Miller GB5 bass guitar is expertly crafted to deliver rich, acoustic tones. It is able to deliver standard acoustic tones as well as sounds reminiscent of an upright basses resonance. Its chambered body design is ideal for smooth jazz and unplugged bass performances. The GB5 4 string is a versatile choice for players seeking elegant sound and style.

Key Features

  • Comfort and Elegance: The Edgeless™ fretboard design features smooth, rolled edges for an enhanced playing experience.
  • Vividx-B Preamp: Equipped with a Piezo pickup under the saddle and a 3-band EQ, this bass allows for precise sound customization.
  • Premium Acoustic Build: Constructed from Mahogany with a Solid Spruce top, the GB5 boasts a refined aesthetic and superior tonal quality.

Signature Acoustic Bass Design

The GB5’s body is crafted from Mahogany with a Solid Spruce top, ensuring warm, resonant tones with a stylish, acoustic-inspired look. A 3-piece Mahogany neck pairs seamlessly with a Rosewood fretboard featuring rolled edges for smooth, effortless playability.


Customizable Sound

Every GB5 model is fitted with a Piezo pickup under the saddle and a 3-band EQ (Treble, Middle, and Bass) alongside a phase switch. This setup offers precise tonal adjustments to suit various performance needs.


Specifications

Body

  • Material: Mahogany with Solid Spruce Top
  • Shape: Marcus Miller Acoustic Bass
  • Finish: Natural (NT)

Neck

  • Material: 3-piece Mahogany
  • Shape: C-shape
  • Scale Length: 34"
  • Fingerboard: Rosewood Edgeless™ with rolled edges
  • Radius: 12”
  • Frets: 20 medium (2.4mm)
  • Nut: Bone, 46 mm width
  • Inlay: White Pearloid Dot
  • Joint: Four-bolt bushing

Electronics

  • Pickup: Vividx-B Piezo under-saddle
  • Controls: Volume, Treble, Middle, Bass, Phase Switch

Hardware

  • Bridge: Sire Acoustic Bass Bridge
  • Tuners: Premium Diecast
  • Finish: Chrome

The Sire Marcus Miller GB5 combines sophistication and versatility, making it the perfect choice for bassists seeking acoustic excellence.

 

Customer Reviews
5.0 Based on 6 Reviews
5 ★
100% 
6
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Filter Reviews:
AS
02/27/2025
Alan S.
Australia Australia

Part II

This is Sire’s “premium” bag — not quite Mono standard, but getting up there. As delivered, the instrument was immaculate, and well set up with the flats as arranged. Action was decent, and intonation was close to spot on. ….. PLAYING: There aren’t a lot of demos on Youtube of this particular fretted model — they’re mostly of the fretless variant. So, I was interested to see how it would sound and feel. (I’m playing through a Markbass MB58R CMD 102 PURE, and/or a Fender Rumble Stage 800.) On-board EQ’ing is limited to Treble/Middle/Bass controls, but I mostly rely on a Boss EQ-200 10-band on my pedalboard.) In short, I very much got the sound I wanted, ranging from the dull “thump” of an upright through to a sound approximating some of my flatwound electrics.) The neck feels right, and the thin profile makes for a more comfortable feel than a standard acoustic — in fact, pretty much like an electric slab.) ….. FINAL THOUGHTS: If you’re expecting this bass, being an acoustic, to be lightweight, think again — although the body is “chambered”, its construction is more akin to a solid body than an acoustic, and its weight is pretty much the same as my other (slab) basses.. Oh, and there’s just a hint of neck dive, so get yourself a good strap.….. Very happy with this one — it may just take over as my favourite 5-stringer for most gigs.

AS
02/27/2025
Alan S.
Australia Australia

Great bass, and great service

I own far too many basses (just ask my wife) — five x 5-stringers (everything from Precision to Jazz to multi-scale/fan-fret), and two x 4-stringers. (And we won’t even mention the electric guitars :-).) Enough said. ….. But it’s one of the 4-stringers that first focused my attention on buying this Sire 5-string acoustic — you see, unlike my other basses (all of which are electric slabs), this 4-string is acoustic-electric, and I’ve had really positive feedback from other band members and sound guys when gigging with it. My preference is still to play 5-string, so was there a decent 5-string acoustic out there? I wondered. ….. I was actually surprised to find that they’re pretty scarce here in Australia — I found a rather expensive ($2,600) Furch (Czechoslovakian), and a cheapie ($172) Asian fretless you probably wouldn’t touch with a barge pole. And that left me with this Sire. ….. I like dealing with Bass Centre — this is the second bass I’ve bought from them in the last five months (the other was a Cort B5), and I appreciate expert advice from fellow bassists, particularly when you live too far way to drop into the store for a test play. ….. PRE-SALES: I was hoping to achieve something approaching an upright double bass sound with this purchase, and Bass Centre recommended that I opt for flatwounds. (I believe the Sire comes with D’Addario roundwounds as standard.) That was all fine with me, as I play flatwounds on some of my 5-stringers anyway. So, I ordered a set (Legend DR 45-125), and they fitted them for me and did a set-up before shipping the Sire (yet another advantage of dealing with bass experts). ….. UNBOXING: It doesn’t seem to be mentioned on the site, but this bass ships with a very nice heavily-padded gig bag.

AS
02/27/2025
Alan S.
Australia Australia

Great bass, and great service

I like dealing with Bass Centre — this is the second bass I’ve bought from them in the last five months (the other was a Cort B5), and I appreciate expert advice from fellow bassists, particularly when you live too far way to drop into the store for a test play. ….. PRE-SALES: I was hoping to achieve something approaching an upright double bass sound with this purchase, and Bass Centre recommended that I opt for flatwounds. (The Sire comes with D’Addario roundwounds as standard.) That was all fine with me, as I play flatwounds on some of my other 5-stringers anyway. So, I ordered a set (Legend DR 45-125), and they fitted them for me and did a set-up before shipping the Sire. ….. UNBOXING: It doesn’t seem to be mentioned on the site, but this bass ships with a very nice heavily-padded gig bag. This is Sire’s “premium” bag — not quite Mono standard, but getting up there. As delivered, the instrument was immaculate, and well set up with the flats as arranged. Action was decent, and intonation was close to spot on. ….. PLAYING: There aren’t a lot of demos on Youtube of this particular fretted model — they’re mostly of the fretless variant. So, I was interested to see how it would sound and feel. (I’m playing through a Markbass MB58R CMD 102 PURE.) On-board EQ’ing is limited to Treble/Middle/Bass controls, but I mostly rely on a Boss EQ-200 10-band on my pedalboard.) In short, I very much got the sound I wanted, ranging from the dull “thump” of an upright through to a sound approximating some of my flatwound electrics.) The neck feels right, and the thin profile makes for a more comfortable feel than a standard acoustic — in fact, pretty much like an electric slab.) ….. FINAL THOUGHTS: If you’re expecting this bass, being an acoustic, to be lightweight, think again — although the body is “chambered”, its construction is more akin to a solid body than an acoustic, and its weight is pretty much the same as my other (slab) basses. .….. Very happy with this one — it may just take over as my favourite 5-stringer for most gigs.

A
02/21/2025
Andrew

Love It

This bass is awesome, great acoustic style tones and a big sounding B!

AS
02/21/2025
Alan S.
Australia Australia

Great bass, and great service

I own far too many basses (just ask my wife) — five x 5-stringers (everything from Precision to Jazz to multi-scale/fan-fret), and two x 4-stringers. (And we won’t even mention the electric guitars :-).) Enough said. ….. But it’s one of the 4-stringers that first focused my attention on buying this Sire 5-string acoustic — you see, unlike my other basses (all of which are electric slabs), this 4-string is acoustic-electric, and I’ve had really positive feedback from other band members and sound guys when gigging with it. My preference is still to play 5-string, so was there a decent 5-string acoustic out there? I wondered. ….. I was actually surprised to find that they’re pretty scarce here in Australia — I found a rather expensive ($2,600) Furch (Czechoslovakian), and a cheapie ($172) Asian fretless you probably wouldn’t touch with a barge pole. And that left me with this Sire. ….. I like dealing with Bass Centre — this is the second bass I’ve bought from them in the last five months (the other was a Cort B5), and I appreciate expert advice from fellow bassists, particularly when you live too far way to drop into the store for a test play. ….. PRE-SALES: I was hoping to achieve something approaching an upright double bass sound with this purchase, and Bass Centre recommended that I opt for flatwounds. (I believe the Sire comes with D’Addario roundwounds as standard.) That was all fine with me, as I play flatwounds on some of my 5-stringers anyway. So, I ordered a set (Legend DR 45-125), and they fitted them for me and did a set-up before shipping the Sire (yet another advantage of dealing with bass experts). ….. UNBOXING: It doesn’t seem to be mentioned on the site, but this bass ships with a very nice heavily-padded gig bag. This is Sire’s “premium” bag — not quite Mono standard, but getting up there. As delivered, the instrument was immaculate, and well set up with the flats as arranged. Action was decent, and intonation was close to spot on. ….. PLAYING: There aren’t a lot of demos on Youtube of this particular fretted model — they’re mostly of the fretless variant. So, I was interested to see how it would sound and feel. (I’m playing through a Markbass MB58R CMD 102 PURE, and/or a Fender Rumble Stage 800.) On-board EQ’ing is limited to Treble/Middle/Bass controls, but I mostly rely on a Boss EQ-200 10-band on my pedalboard.) In short, I very much got the sound I wanted, ranging from the dull “thump” of an upright through to a sound approximating some of my flatwound electrics.) The neck feels right, and the thin profile makes for a more comfortable feel than a standard acoustic — in fact, pretty much like an electric slab.) ….. FINAL THOUGHTS: If you’re expecting this bass, being an acoustic, to be lightweight, think again — although the body is “chambered”, its construction is more akin to a solid body than an acoustic, and its weight is pretty much the same as my other (slab) basses.. Oh, and there’s just a hint of neck dive, so get yourself a good strap.….. Very happy with this one — it may just take over as my favourite 5-stringer for most gigs.