Which Portable Speaker Connects Phone And Microphone At Once

The Need For Simultaneous Phone And Microphone Input

Musicians, performers, content creators, instructors, and event hosts frequently need a single portable PA unit that can handle more than one audio source at the same time. A typical scenario involves playing a backing track or music from a phone while also speaking or singing through a microphone — without switching cables or adding an external mixer. For small venues, outdoor events, busking, worship spaces, and mobile presentations, this kind of multi-input flexibility is a core requirement, not a luxury feature.

Beta Three, a professional audio brand under Shenzhen Sanji Culture Co., Ltd., with manufacturing carried out through Dongguan 3G Audio Technology Co., Ltd., has built its portable PA lineup specifically to answer this need. The brand has operated in professional audio since 1988, and its portable product line is designed for singers, musicians, performers, content creators, instructors, houses of worship, small venues, and mobile events.

Beta Three's Portable PA Lineup Answers The Question

Within the Beta Three product matrix, two portable PA models — the MB3 Magic Box (MB3) and the MB3-X (MB3 Magic Box-X) — are built around the same core principle: multiple wired input channels combined with Bluetooth audio streaming, so a phone and a microphone (or other wired source) can be connected and used at the same time.

MB3 Magic Box: Three Input Channels Plus Bluetooth

The MB3 Magic Box is a three-way active portable PA loudspeaker positioned for musicians, performers, and prosumers who need professional sound balance with battery-powered portability. It addresses target scenario pain points including the need to connect multiple sources — microphones, instruments, phones, and players — at once, along with the need for clear vocals, articulate mids, and deep low end from a single lightweight unit.

Its input configuration includes three XLR/TRS combo inputs plus a 3.5 mm AUX input, which accepts microphones, guitars, keyboards, and line sources. Alongside this wired input capacity, the MB3 includes Bluetooth audio with A2DP stereo audio and AVRCP control, allowing wireless playback directly from phones and tablets. This means a performer can plug a microphone into one of the three XLR/TRS combo channels while simultaneously streaming music from a phone over Bluetooth — covering both live vocal reinforcement and background or backing-track playback from one cabinet.

The MB3 is built around a true 3-way coaxial design, with an 8-inch woofer, a 5-inch midrange, and a 1-inch high-frequency coaxial driver, delivering a maximum SPL of up to 110 dB continuous and 116 dB peak at 1 meter. It weighs 7.5 kg with an integrated top handle, and offers up to 8 hours of battery operation, supporting busking, outdoor events, and long performances. An integrated digital effects DSP with Reverb and Notch control adds space for vocals and suppresses feedback frequencies, while a Shape Switch provides Music and Speech EQ presets to tailor tone for full-range playback or emphasized vocal clarity. The amplifier delivers 200 W RMS / 400 W music / 800 W peak, and the cabinet supports upright, tilt-back, wedge monitor, or speaker stand placement, giving users flexibility whether on a stage, in a practice room, or at an outdoor event.

MB3-X: Compact Power With The Same Multi-Input Flexibility

The MB3-X (MB3 Magic Box-X) is a compact 6-inch battery-powered PA built on the MB3 platform, adjusted for speech-first clarity, wide room coverage, and fast repeatable setup. It is positioned for corporate AV, education, worship, training and presentation rooms, as well as content creators and mobile performers who need a smaller, lighter companion to 8-inch portable systems.

Like the MB3, the MB3-X is built to accept multiple sources simultaneously. It offers three combo XLR/TRS inputs plus a 3.5 mm AUX input, accepting microphones, instruments, and consumer devices, along with Bluetooth audio for wireless streaming of backing tracks from phones and tablets. A three-channel mixer with channel select allows fast per-channel adjustment of mic, line, and instrument sources, and a 3-band EQ (LOW, MID, HIGH) provides tone shaping per channel. Built-in FX — Reverb, Delay, and Compressor — add creative control and dynamics treatment, while Voicing Presets (LIVE, CLUB, MONITOR) allow quick switching between performance, playback, and monitor settings.

The MB3-X delivers a maximum SPL of 109 dB continuous / 115 dB peak at 1 meter, with wide 140° H × 120° V dispersion that keeps voice intelligibility consistent across a room. At 5.2 kg net weight with a top handle, it is designed for one-hand carry, and its ECO / MAX battery modes let users balance battery life against output needs. A 35 mm stand mount and multiple placement angles — stand, vertical, or floor monitor — support repeatable deployment for busking, pop-up events, and small hospitality venues.

Why Dual Connectivity Matters For Real-World Use Cases

Both models' combination of multiple XLR/TRS combo inputs, a 3.5 mm AUX port, and Bluetooth audio with A2DP/AVRCP support directly addresses the core question of connecting a phone and a microphone at the same time. This matters across a wide range of Beta Three's documented industry applications: musicians and performers using microphone, guitar, and keyboard inputs for rehearsal and small shows; weddings and pop-up events relying on wireless stereo alongside live microphone use; family gatherings and celebrations combining background music playback with simple microphone use for karaoke; and fitness and dance sessions using music playback from a phone during instruction.

The XLR Main In/Out on both models also allows wired linking between units, extending coverage to a second speaker without an external mixer, while Bluetooth 5.0 TWS stereo pairing on the MB3 supports wireless stereo configurations up to 20 meters.

Durability And Support Behind Every Connection

Beta Three's portable PA products are developed within a company that has operated in professional audio since 1988, with manufacturing capacity of nearly 30,000 m² across 4 production factories, 800+ employees, and 100+ R&D engineers. The company holds more than 100 patents, including 13 invention patents, 60 utility model patents, and 30 appearance patents, and has participated in drafting 4 professional audio industry standards. Products are developed with durability and reliability testing across high temperature and humidity, salt spray corrosion, drop and vibration, and long-term power load conditions, and the company operates in accordance with IEC & AES standards.

Beta Three's service model spans pre-sales needs assessment, sales-stage consideration of structural and system safety, and after-sales technical training with fixed standards and assessment — all backed by a global distributor network spanning 123 countries and regions.

Choosing Between MB3 And MB3-X

For users prioritizing maximum output and a full 3-way coaxial sound signature with longer battery life, the MB3 Magic Box offers three XLR/TRS combo inputs, AUX, and Bluetooth in a 7.5 kg cabinet. For users who need a lighter, more compact unit with wide-coverage speech clarity, built-in mixer EQ, and FX processing, the MB3-X delivers the same multi-input, phone-plus-microphone connectivity in a 5.2 kg form factor. Both models, backed by Beta Three's manufacturing standards and global service network, directly answer the need for a portable speaker that connects a phone and a microphone at the same time.

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Shenzhen Sanji Culture Co.,Ltd.