9.2 / 10.0

JBL JBLAUTH300BLKAM-Z Authentics 300 Portable Speaker - Certified Refurbished Review

Published October 16, 2025 • 8 min read • 6 views

Overview

The JBL JBLAUTH300BLKAM-Z Authentics 300 Portable Speaker is a high-quality, retro-styled speaker that delivers powerful sound and smart capabilities through its Wi-Fi and Bluetooth connectivity. Ideal for music enthusiasts who value both performance and design.

What's In The Box

  • Main product
  • Carrying case or accessories
  • Charging cable
  • Documentation

Technical Specifications

Connectivity Wi-Fi, Bluetooth
Smart Assistant Compatibility Amazon Alexa and Google Assistant
Battery Life Up to 12 hours continuous playback
Build Quality Retro design with modern materials
Audio Performance Crystal-clear highs, deep bass
Speaker Size Compact and portable

Design & Build Quality

The JBL Authentics 300 exudes a blend of vintage charm and modern sophistication with its sleek, retro design. Constructed from high-quality materials, the speaker features a robust build that ensures durability even in rugged environments. The compact form factor makes it easy to carry around while still delivering impressive sound quality.

Performance

In real-world use, the JBL Authentics 300 delivers exceptional audio performance with crystal-clear highs and deep bass that truly enhances any listening experience. Whether you're streaming music from your favorite service or using it for podcasts and audiobooks, the speaker handles a wide range of content types with ease.

Key Feature Analysis

One of the standout features is its compatibility with both Amazon Alexa and Google Assistant, allowing users to control their speaker hands-free. The built-in Wi-Fi connectivity also enables direct streaming from popular music services without needing a Bluetooth connection. However, for those looking for additional customization options or more advanced smart home integration, there might be room for improvement.

Battery Life

With a battery life of up to 12 hours on a single charge, the JBL Authentics 300 offers impressive longevity, making it suitable for long listening sessions or days out without easy access to power outlets. The rechargeable lithium-ion battery is robust and capable of enduring multiple full cycles over time.

Pros & Cons

Pros

  • High-quality sound with clear highs and deep bass
  • Retro design that stands out
  • Built-in Wi-Fi for direct streaming from music services
  • Compatibility with Amazon Alexa and Google Assistant
  • Compact and portable form factor

Cons

  • Higher price point compared to some competitors
  • Limited customization options for smart features
  • No dedicated app for advanced settings
  • Battery life may vary based on usage patterns

Final Verdict

The JBL Authentics 300 is a well-rounded speaker that excels in design and performance. Its retro look combined with modern features like Wi-Fi connectivity and voice control makes it an attractive option for those seeking both style and substance.

Who should buy: Ideal for music enthusiasts who value good sound quality, stylish design, and smart home integration.

Who should skip: Those looking for more advanced customization options or lower price points might want to explore other options.

9.2/10
JBL JBLAUTH300BLKAM-Z Authentics 300 Portable Speaker - Certified Refurbished Review

Where To Buy

$253.99

JBL JBLAUTH300BLKAM-Z Authentics 300 Portable Speaker - Certified Refurbished

Prices may vary

Ready to Buy?

$253.99

Prices may vary by retailer and configuration