JBL PartyBox 300 Bluetooth Speaker

JBL Partybox 300 Review

Before we begin the JBL Partybox 300 review, here is the draw-down of the pros and cons of JBL’s largest speaker. Be sure to also check out our top picks for the loudest Bluetooth speakers that can produce tremendous volume and sound output.

The Pros

  • Hands down the loudest Bluetooth speaker in the JBL series
  • Louder than the JBL Boombox
  • A massive 10400mAh battery; 18 hours of playtime
  • Extremely powerful and distortion free sound

The Cons

  • The speaker is quite bulky (310mm x 320mm x 690mm)
  • Weighs a massive 15.84kg
  • Bass does not go lower than 45 Hz

The JBL PartyBox 300 is one of the loudest Bluetooth speakers made especially for large parties and outdoor gatherings. It is a large wireless speaker from JBL that streams high-quality sound from your smartphone or Bluetooth devices at a touch of a button, with roaring acoustic drivers that pump out deafening sound quality. We liked the fact that you can pre-program your party or event with your favorite playlist from a USB thumb drive while connected to the PartyBox 300. Furthermore, the speaker supports wireless connection via TWS (True Wireless Stereo) using Bluetooth connection for up to 2 speakers, or wired via RCA output to another speaker. We particularly liked the fact that the JBL PartyBox comes with a USB port which allows you to charge other USB devices straight from the speaker, so you do not require an extra charger to keep your smartphone devices powered up. The PartyBox 300 speaker provides JBL signature sound with an immersive audio experience at home that brings to live audio experiences with extremely loud sound. If you are looking for one of the loudest Bluetooth speakers that can produce a tonne of volume for party events, the JBL PartyBox 300 is a great choice.

The sound performance of the JBL PartyBox 300 is extremely loud and even surpasses the JBL Boombox in terms of absolute sound output. This Bluetooth speaker is equipped with 2 x 6.5” woofers and 3 x 2.25” tweeters with true wireless stereo compatibility. It also features a bass boost function to increase the bass on the speaker for deeper beats and lower frequency response. The frequency range on the PartyBox 300 speaker is a wide 45 Hz to 20 kHz, and can blast music for up to 18 hours with its massive 10400mAh battery life. The volume output on the JBL PartyBox 300 is incredibly loud, and is best suited for large outdoor gatherings or parties where you can blast music at full power. The highs and midranges on the PartyBox 300 are crisp and crystal clear, and the bass hits hard and punchy without muddying into the midrange frequencies. Music genres such as rock, hip-hop and electronic dance music sounded particularly good on the JBL PartyBox speaker, and can really start a party with incredibly detailed and punchy beats. Furthermore, the volume on the PartyBox 300 gets so loud that you may have to place the speaker at a distance to project the sound. This speaker can pump out tremendous volume and does not have a hint of distortion at maximum volume levels.

JBL Partybox 300 Speaker Review

The JBL PartyBox 300 is a massive speaker with a product dimension of 310mm x 320mm x 690mm and weighs a massive 15.84kg. It comes with a high capacity 10400mAh battery which provides up to 18 hours of continuous playtime and takes only 5 hours to reach a full charge. We also like the fact that the PartyBox 300 comes with a 12V DC input for you to plug in your mic or guitar or stream music via Bluetooth or from a USB stick. Furthermore, you can even connect two PartyBox speakers wirelessly with the TWS feature or wire two speakers together using the RCA input for a full stereo experience. In addition to its booming volume and bass, the JBL PartyBox 300 has a light mode including meter, pulse and party mode which changes the light strobes according to the mood of the music. We also liked the fact that this Bluetooth speaker supports multiple input terminals including RCA L/R, USB Port, 3.5mm auxiliary, microphone and guitar (1/4”) with volume control. It wireless Bluetooth on the PartyBox 300 works like a charm and you can pair 2 party speakers together for a much wider soundstage. The entire speaker is built like a tank and has a durable sleek exterior design that feels very nice to carry and touch. The speaker is also fairly portable, and comes with a hand-carry at the top for easy transport.

The Verdict? The JBL PartyBox 300 is hands down one of the loudest Bluetooth speakers created for large-scale parties, and is even louder than the JBL Boombox speaker. The amount of volume that this speaker produces can power an entire large outdoor party with crisp and crystal clear music with deep bass performance; you can even stream music wirelessly from your smartphone device directly to the JBL PartyBox speaker. Furthermore, you can also pre-program your party or even with your favorite playlist from a USB thumb drive. You can connect compatible speakers wirelessly via true wireless stereo to create a much wider stereo soundstage for your speakers. The PartyBox 300 comes with a high-capacity 10400mAh battery which allows you to charge your smartphone and other devices via USB output. The light strobing functions on the JBL PartyBox 300 are also very entertaining to watch, and you can cycle through different light modes depending on your preferences. Overall, the JBL PartyBox 300 is one of the loudest Bluetooth speakers we have tested and highly recommend them if you are looking for a Bluetooth speaker more powerful than the JBL Boombox.