Marshall Kilburn III Portable Bluetooth Speaker - Black & Brass
Marshall Kilburn III Portable Bluetooth Speaker - Black & Brass

Vendor:Marshall

Marshall Kilburn III Portable Bluetooth Speaker - International Warranty

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Color: Black & Brass
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Marshall · Kilburn III

Marshall Kilburn III Portable Bluetooth Speaker

The roadie-grade portable: 50+ hours of battery, a 4" woofer with true stereo top end, IP54 build, Auracast, and a strap that means business.

  • 50+ hrs battery
  • 4" woofer
  • Bluetooth 5.3 + Auracast
  • IP54
  • Power bank
  • 3.5 mm aux
  • Replaceable battery

50+ Hours of Playtime

The longest-running Kilburn ever. Fast-charge with a 30 W USB-C PD brick: 20 minutes buys 8 hours.

Serious Low End

A 4-inch woofer and dual 2-inch full-range drivers in a bass-reflex cabinet hit 91 dB — room-filling, garden-filling sound.

Charge Your Phone

The USB-C port works both ways, turning the Kilburn III into a power bank for your devices.

Auracast Ready

Bluetooth 5.3 with Auracast lets compatible speakers share one broadcast for multi-speaker setups.

Road-Worthy Build

IP54 splash and dust resistance, iconic vinyl-look finish, and the signature red carry strap.

Built to Be Repaired

User-replaceable battery keeps it playing for years, not seasons.

Technical Specifications

BrandMarshall
ModelKilburn III
TypePortable Bluetooth speaker
Drivers1×4" woofer + 2×2" full-range, bass reflex
Battery50+ h playtime; 3 h full charge (30 W PD); 20 min = 8 h
Bluetooth5.3 + Auracast
InputsBluetooth, 3.5 mm aux
Power bankYes, USB-C out
Water/dust ratingIP54
Max SPL91 dB @ 1 m
Frequency response45–20,000 Hz
Dimensions273 × 169 × 150 mm
Weight2.8 kg
WarrantyInternational warranty

Frequently Asked Questions

How does it compare to the Emberton III?
Kilburn III is the big brother — a real 4" woofer, 50+ hours vs 32, aux input and power-bank output; Emberton counters with IP67 and pocketability.
Can it charge my phone?
Yes — plug into the USB-C port and it doubles as a power bank.
Does it have an aux input?
Yes, a 3.5 mm input alongside Bluetooth 5.3.
Is the battery replaceable?
Yes — the Li-ion battery is user-replaceable.
Is there a warranty?
Yes — international warranty included.

Marshall · Kilburn III · International Warranty