Marshall Kilburn III – Portable Bluetooth Speaker (Black & Brass)

360° True Stereophonic Sound
Delivers immersive multi-directional audio with no blind spots—thanks to an optimized stereo layout and updated tuning :contentReference[oaicite:turn0search1,turn0search7]{index=1}.

Over 50 Hours Portable Playtime
Exceptional battery life powered by a rechargeable (and replaceable) Li-ion battery, with quick‑charge offering ~8 hours of playback in just 20 minutes :contentReference[oaicite:turn0search1,turn0search5]{index=2}.

Rugged IP54 Dust & Water Resistance
Rated IP54 to survive splashes and dust—built for both indoor and outdoor enjoyment, though not intended for full water submersion :contentReference[oaicite:turn0search1,turn0search12]{index=3}.

Tactile Controls & Dynamic Loudness
Classic brass dial interface with bass, treble, volume knobs plus an “M” button for presets; features Dynamic Loudness for balanced audio streaming at any volume :contentReference[oaicite:turn0search1,turn0search5]{index=4}.

Power Bank & Multipoint Bluetooth 5.3
Dual Device Connectivity via Bluetooth 5.3; also doubles as a power bank to charge your phone via the USB‑C port :contentReference[oaicite:turn0search5,turn0search2]{index=5}.

High‑Quality Audio & Balanced Performance
Output system uses a 4″ woofer alongside two 2″ full-range drivers totaling 50 W (30 W + 10 W + 10 W), reproducing audio from 45 Hz to 20 kHz with a loudness rating up to 91 dB SPL @ 1 m :contentReference[oaicite:turn0search11,turn0search5]{index=6}.

Iconic Retro Design
Features a tolex exterior, metal mesh grilles, brass control caps, and velvet-lined leather strap—blending vintage style with modern touring durability :contentReference[oaicite:turn0news19,turn0search4]{index=7}.

Ideal For
Perfect for stylized portable sound—indoor-outdoor lounging, travel setups, or elevating small gatherings with premium audio :contentReference[oaicite:turn0news19,turn0news19]{index=8}.