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Gemini

Gemini 12-Channel Bluetooth Audio Mixer with USB & FX (GEM-12USB)

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Model: GEM-12USB


Features

  • 12-Channel Professional Bluetooth Mixer: 12-input 2-bus analog mixing console with Bluetooth wireless streaming and USB audio playback, built for bands, live sound engineers, podcasters with multiple guests, mobile DJs, and studio producers who need more channels, more mic inputs, and more routing flexibility in a compact format.
  • Four Mic Preamps with Phantom Power: Four studio-grade XLR mic inputs (Channels 14) each with 48V phantom power support dynamic and condenser microphones simultaneously, ideal for multi-guest podcasts, full band performances, worship audio, panel discussions, and any setup where multiple mics need to run at once.
  • Bluetooth Streaming and USB Playback: Stream audio wirelessly from any Bluetooth device directly into the mix, no dongles, no adapters. USB port plays MP3 and WAV files from a flash drive for backing tracks and music playback. Stereo aux return adds a dedicated return path for external effects or DJ gear.
  • Onboard Multi-FX and Full I/O: Built-in multi-effects unit delivers reverbs, delays, chorus, and flanger on demand, no external effects processor needed. 3-band EQ per channel with FX send and stereo pan give you precise control over every source. Connects 12x 1/4" inputs, 4x XLR, RCA stereo in/out, 6x 1/4" outputs, and headphone monitor out.
  • USB-C Powered, Compact Build: Powered by USB-C for clean, modern cable management on any desktop or stage setup. Measures 10" x 8.7" with an ultra-low-noise analog design that keeps background hiss out of your recordings and broadcasts. Twelve channels and Bluetooth in a footprint that sits beside a laptop.

Description

Gemini Sound has been providing loud speakers to DJs, musicians, and people hosting parties since 1974. We are your one-stop shop for pro audio equipment and sound systems that can rock any size party or event, indoor or out. Whether you're just getting started or a seasoned pro, you can find the innovative and cutting edge technology you need to perform at a high level and provide a fun and enjoyable experience. Doesn't matter if you're a performer, sound guy, DJ or just like to party, you get 12 hours of wireless playtime + 200 watts of sound! Unleash the Gemini Sound GSYS-4800! 3000W, 12" subs, LED lights & remote. Transform your audio experience! Connect your favorite smartphone, laptop, tablet, or Bluetooth DJ deck for the best wireless streaming and playback experience. Premium ultra-low-noise design. Engineered to reduce noise and interference, delivering clean and pristine audio output. Play your music .MP3 / WAV files directly from your USB drive. Enjoy the convenience of carrying your entire music library in your pocket. Essential to power a condenser microphone and deliver clear sound by providing consistent voltage, reducing noise & eliminating for extra cables. Unlock all potential. Effortlessly stream music playback during presentations and conferences. Unlock all potential. 5 analog input channels, assorted outputs, echo effect, phantom power, EQ, and delay. Superior Clarity. Ensure high headroom, ultra-low noise, and excellent audio quality from any source. Full I/O Configuration. Ideal for live and studio setups including 1/4" and RCA inputs and outputs, as well as an XLR input. Add depth and define. Reverb, chorus, flange, and delay, adding depth by placing sounds in virtual space. Which channels have phantom power and how many channels can supply it simultaneously? All four mic channels can provide +48V phantom power simultaneously, letting you use up to four condenser mics at once. Does the USB port function as an audio interface for recording or is it strictly for media playback? It does not act as a computer audio interface. The USB port is strictly for media playback (MP3 or WAV) from a thumb drive or similar USB storage device. What is the exact I/O configuration in terms of XLR, ¼-inch, and RCA connections? You get 4 XLR mic inputs, 12 total ¼” inputs, and a stereo RCA input. For outputs, there are 6 total ¼” connections plus a stereo RCA output. What is the mixer’s power requirement and does it support international voltages? It requires DC ±15V and +48V phantom power. The included adapter handles 110–240V, so it’s compatible with most international power standards. 5. What are the physical dimensions and weight of the unit, and how portable is it for mobile gigs? It measures about 2.17”H × 9.65”W × 9.06”D and weighs around 3 lbs (1.7 kg). It’s compact and light enough to carry easily for portable DJ setups or small venues.

Brand: Gemini


Number of Channels: 12


Product Dimensions: 9.65"D x 9.06"W x 2.17"H


Item Weight: 3.7 pounds


Connectivity Technology: USB


Number of Channels: 12


Connectivity Technology: USB


Power Source: Corded Electric


Frequency: 20 hertz


Output Connector Type: 3.5mm headphone jack


Audio Input: XLR, 1/4 inch, RCA


Noise Level: 20 db


Item Dimensions D x W x H: 9.65"D x 9.06"W x 2.17"H


Item Weight: 3.7 pounds


Software Update Supported to Date: unknown


Brand Name: Gemini


Number of Items: 1


Item Highlight: 12-channel Bluetooth mixer with USB & FX - 4 XLR preamps, 48V phantom - multi-FX - USB-C powered


Manufacturer: Innovative Concepts and Designs


UPC: 747705007117


Global Trade Identification Number: 17


Unit Count: 1 Count


Included Components: product, manual


Item Type Name: DJ audio mixer


Model Number: GEM-12USB


Manufacturer Part Number: GEM-12USB


Warranty Description: 1 year.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Incredibly clean, straight-forward mixer
Model: GEM-12USB
I've had this for about 2 months, and it's still working great. I love the sound quality of this thing - it's crystal clear. The post-FX sounds are quite nice, too. If you're looking for a straightforward mixer to route your audio into your computer or some other hub, this is perfect. I haven't used the other special features like USB or bluetooth - I'm using this as a line-in input for my dedicated music production sound card, XONAR STX II. The build and feel of the machine are also nice. As for the price and quality, I'm very pleased with it. ... show more
Reviewed in the United States on June 11, 2021 by Raphael Tobar
    • Es lo que esperaba
Model: GEM-12USB
Es un buen equipo, solo debo aprender a manejarlo mejor
Reviewed in the United States on December 5, 2025 by ANTONIO CABEZAS DUARTE
    • Muy buen Mixer
Model: GEM-12USB
Muy buena, calidad / precio excelente. Realicé el pedido desde argentina y llego en 7 días, antes de lo planificado por Amazon
Reviewed in the United States on October 20, 2025 by Federico Ferrari
    • I’m impressed
Model: GEM-08USB
I’ve been buying and selling this music stuff since 1973. Home studios since 1983. Been in many bands. As a drummer for many years practice was always at my house so I always bought the PAs. Mixers. Multi-track boards. Speakers, stands, mics, lighting etc. I started as a guitar player and am ending as a bassist. I have always played all 3 instruments so I could record by myself. Recently I decided to sell off most of my studio stuff not being in a band (not sure I will ever do that again at my age) and not doing any recording. I sold my Tascam Model 12 this past week, my latest multi-track. What I have left would not be worth it to me to sell off for small sums of money in bits and pieces so I’m gonna keep what I have left just in case I want to jam with someone and for a nice practice space (still play my instruments a lot) and crank it up. So I wanted a simple small mixer to control what I have left which is two large 15” powered speakers, two near field “control room” monitors, a couple of mics, a Roland electronic drum set, my guitar and my bass. I wanted Bluetooth to stream from my iPhone. I wanted an EQ with L-M-H, I have a gain control on channels 1&2, a low cut on 4 channels. I have a ton of CDs so why not connect the CD player lol (only stream these days) and it has an input for that player. I have to say it all sounds great mixed through this little mixer! Outstanding really. Clean. Quiet. Simple processing. It would be great if I set this up at a party and played tunes. Would be adequate for a small gig with a 2-3 piece band even. I’ve had many many higher end mixers and multi-track units through my life and I have to say I am impressed with this. I wasn’t expecting much but this thing delivers! Last note: I didn’t want to spend much or I would have just kept the model 12 for my mixer. I had a budget in mind of 50 bucks lol. (I kept $350 of the $400 I got for the Tascam) This Gemini mixer is normally 90 bucks or so then add tax. I got this from the Amazon resale center for 53 dollars total. Nice! It was in “used-very good” condition which is described as a new returned product. I’ve never bought from the Amazon re-sale before. But there’s not a scratch or finger print on this. Came in original box. Manual is missing but that’s a whatever for me. If I need it I can find it online with a million YouTube videos I’m sure lol. And I think it was retuned because a little metal sleeve on the power cable was loose in the box missing the tiny two screws to put the two parts together. I’m sure I have two tiny screws around somewhere so easy fix for me. Amazon resale comes with a 30 day free return policy so why not try it out. Worked for me… ... show more
Reviewed in the United States on August 3, 2024 by Mike Mason
    • Sound is not good quality.
Model: GEM-08USB
If you are expecting good sound , don't buy this. Even with max volume, it is very weak. Stick to brand names and stay away from products made in China.
Reviewed in the United States on May 21, 2024 by John Schmidt
    • Awesome
Model: GEM-12USB
Got this for my boyfriend for his birthday, he absolutely loves it!
Reviewed in the United States on July 29, 2025 by Lynn Martin
    • FX send is not independant of the channel level
Model: GEM-08USB
I purchased this based on an answer to my question saying that the FX send can route a channel to the FX bus and aux output without that channel ending up in the main mix -- unfortunately this was incorrect information. While you could use external effects that add to the signal if you're using something such as a gate or delay you can't make it work because the channel level needs to be turned up in order for the fx send to work. Aside from that issue I really don't like that they used a very cheaply made power supply with a very non standard plug so that if your power brick dies you can't just easily buy a replacement. The chassis of the mixer it's self seems solid but it doesn't stay in place and slides all over the place. Most importantly the manual is absolutely worthless. No idea how bluetooth would even work because it just doesn't tell you.... it also doesn't seem to have a USB sound card built in like you are led to believe but only can play MP3 from a USB drive (but again, the manual isn't clear). Sound quality seems ok but I didn't use it for too long since it just simply won't work for my application. I would recommend a Mackie Mix 5 or Mix 8 if you just need a basic mixer which is about the same price and a much better quality (though it also has the fx send issue that this one does). ... show more
Reviewed in the United States on November 15, 2022 by Robert K. Mertz
    • Perfect for my application!
Model: GEM-12USB
I bought this mixer to use as the centerpiece of my on stage stereo keyboard monitor rig. Has all the features I need to get a good stereo image on stage from my two keyboards. Sounds great, is low profile and lightweight. great value for the money.
Reviewed in the United States on August 11, 2022 by Kathy H

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