Jbl Libra 300 – Power Amplifier With Mixer, Usb And Bluetooth

JBL Libra 300 Amplifier with Mixer, USB and Bluetooth

The JBL Libra 300 is an India-market public address amplifier with a built-in mixer, made for venues that need announcements and background music from one rack-friendly unit: banquet halls, places of worship, schools, retail spaces, restaurants and community halls. Six microphone inputs, auxiliary and line inputs, USB playback and Bluetooth streaming are all mixed on the front panel, and the speaker outputs support both low-impedance 4 and 8 ohm loads and 70 V and 100 V line distribution for covering larger spaces with multiple ceiling or wall speakers.

Key features

• Integrated mixer amplifier for PA and background music systems
• Six balanced microphone inputs for announcements and events
• Two auxiliary RCA inputs and a balanced line input for music sources
• USB playback and Bluetooth streaming built in
• Speaker outputs for 4 ohm, 8 ohm, 70 V and 100 V line systems
• Bass and treble tone controls for room tuning
• Preamp and line outputs for linking to additional amplifiers
• Fan-less, efficient design for quiet, simple installation

One unit for announcements and music

A typical small venue juggles a separate mixer, a media player and a power amplifier. The Libra 300 folds those jobs together. Microphones connect for speeches, ceremonies and announcements, while phones and laptops feed music through Bluetooth, the auxiliary RCA pairs or the balanced line input, and a USB drive handles playlists without any external player. Front-panel level and tone controls keep daily operation simple for non-technical staff: set the microphone level for the hall, set the music level under it, and adjust the bass and treble controls, each offering plus or minus 10 dB at 100 Hz for bass, to suit the room’s acoustics.

Outputs for distributed speaker systems

The amplifier’s barrier-strip speaker terminals cover conventional 4 ohm and 8 ohm speaker loads for a single room, and 70 V and 100 V line outputs for distributed systems where many speakers spread across a hall, a floor or a campus each tap off a common line. That flexibility lets an installer start with a few speakers and add more zones later without replacing the amplifier. Preamp and line outputs allow the mixed signal to feed a second amplifier or a recording device, and the frequency response of 50 Hz to 15,000 Hz plus or minus 3 dB is matched to speech clarity and background music duty.

Power and installation

The Libra 300 runs from 240 V AC mains at 50/60 Hz and also accepts a 24 V DC supply, which keeps the system announcing during mains interruptions when paired with a battery backup, a common requirement for institutions and places of worship. The fan-less design keeps mechanical noise out of quiet halls and reduces maintenance. All Libra series amplifiers are designed to be efficient, light and simple to install and operate.

If you are equipping a hall or commercial space and want microphones, music sources and amplification in a single dependable JBL unit, the Libra 300 is built for that exact installation pattern.