Franz Bassguitars Sirius DC FL 4 Poplar Premium

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Franz Bassguitars Sirius DC FL 4 Poplar Premium

Franz Bassguitars

Sirius DC FL 4 Poplar Premium

4.7 Expert Rating

Product Info

Article Number: 617512
Model: Sirius DC FL 4 Poplar Premium
Price: $4,398.90

* Prices may vary. Check retailer for current pricing and availability.

The Sirius DC FL 4 is a serious instrument for the experienced fretless player. The Delano pickup and extended scale provide a unique, powerful voice – think Jaco-esque tones with modern punch. This is a high-end, German-crafted bass perfect for studio work and discerning players seeking a distinctive fretless sound.

Product Description

  • Franz Bassguitars Sirius DC FL 4 Poplar Premium
  • Fretless Electric Bass
  • Body: Walnut
  • Top: Poplar burl
  • Neck-thru-body: Thermo asg with walnut stripes
  • Fingerboard: Ebony
  • Scale: 876 mm (34.5")
  • 29 frets
  • Pickup: 1 Delano TheExtender Humbucker (bridge)
  • CTS passive electronics
  • 1 volume control
  • 1 tone control
  • 1 switch for serial / single coil / parallel circuit
  • ETS 3D bridge
  • Gotoh machine heads
  • Black hardware
  • Colour: Natural
  • Includes certificate and case
  • Made in Germany
PROS
  • • Walnut/Poplar burl body offers stunning aesthetics and resonant tone
  • • Thermo asg neck with walnut stripes provides exceptional stability and feel
  • • Delano TheExtender humbucker delivers powerful, articulate low-end response
  • • ETS 3D bridge enhances sustain and intonation accuracy on the fretless neck
CONS
  • • The extended scale length (876mm) might feel unwieldy for players with shorter arms
  • • Premium-priced, limiting accessibility for budget-conscious bassists
  • • Fretless design demands precise intonation and a dedicated learning curve

Product Video

Key Features

Body Material Walnut with Poplar Burl Top
Neck Material Thermo Ash with Walnut Stripes
Fingerboard Ebony
Pickups 1 Delano TheExtender Humbucker
Scale Length 876 mm (34.5 in)
Frets 29
Strings Likely 5-string, standard gauge (40-100)
Weight Approximately 9.5 - 11.5 lbs (4.3 - 5.2 kg) - typical for a neck-thru bass

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Frequently Asked Questions

The Extender offers a thicker, more defined low-end than many vintage-voiced pickups, while retaining clarity – it’s a modern workhorse for a powerful, articulate fretless tone.
While the extra frets provide extended range, the focus is on fretless expression; the extra frets are a bonus for those seeking a wider tonal palette but not the primary design intention.
Switching to single coil mode will thin the sound and add more air, while parallel mode provides a more balanced, vintage-like tone, offering versatility beyond the humbucker's core character.

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