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Samson SM4 4-Channel Bluetooth Fitness Mixer w/Wireless Mic Receiver+Speaker

$319.98 $184.00
(You save $135.98)

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Rpb27, SM4

Warranty Information:


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Items included in this bundle

New Page 1 Package Includes:
  • (1) Samson SM4 4-Channel Bluetooth Fitness Mixer w/Wireless Mic Receiver+Rack Kit
  • (1) Rockville RPB27 20w Rugged Portable Waterproof Bluetooth Speaker w Bumping Bass

Authorized Samson Dealer

Description of SM4:

Samson’s SM4 is a half-rack, 4-channel line mixer designed to easily integrate into any installation or commercial sound system. This mixer is perfect for fitness clubs, gyms, restaurants, night clubs and schools. The studio-grade microphone channel features a 2-band equalizer (EQ) that allows you to adjust the tone of the microphone without affecting the music. The Music channel includes rear panel RCA inputs, and front-mounted stereo 1/4" and 1/8" inputs for connecting mobile devices. The Bluetooth connectivity lets you wirelessly stream music, while the USB port can integrate an optional Samson XPD Series wireless system or plug in a mobile device. A voiceover feature enables you to lower the music (up to 30dB of ducking) while talking through a microphone or USB port.

The Samson SM4 mixer incorporates a unique combination of features that just cannot be found in any other mixer at anywhere near the price. Featuring studio quality audio and exceptional build quality, the SM4 Voice-Music Bluetooth Mixer with Auto Talkover was designed for fitness studios, House's of Worship , schools, and business's where a vocal mic or headset/lavalier needs to mix with music and/or an AV presentation. The SM4 is built in a steel, half-rack chassis that was designed to mount next to a wireless mic receiver so all control sources are in one convenient location.

Many applications do not require a large mixer with multiple channels but may feed signal to large areas (auditoriums, churches, presentation-training rooms, restaurants and bars) or areas that need high power sound systems (fitness studios, spin classes, dance classes) . These applications need a mixer that is very easy to operate and incorporates a Talkover feature that ducks the music under the voice whenever signal is detected at the mic or USB input. It's like having a Front of House Sound Engineer working the system.

The integrated Bluetooth receiver allows for streaming from any Bluetooth equipped mobile device and the device can be continually re-charged from the front panel USB port. The SM4 can easily connect to existing systems via main mixer, floor /wall panel inputs, or even the single mic input on a DJ controller. Just switch The XLR and RCA stereo outputs to MONO and the mixer output can be sent to one mic or RCA input when used as a sub-mixer to a larger system.

Aerobics/Fitness Studios: Allows the instructor to mix the wireless headset with the music program (connected via Bluetooth, RCA rear jacks, 3.5mm front panel jack) and use the Talkover feature to duck the music under the mic rather than try to scream/yell over the music. This voice saving feature makes the SM4 the perfect partner for Samson Airline 88 and Airline 77 Fitness Headset systems.

Auditorium - Conference-Training Room / House Of Worship Podium Mixer: The SM4 allows the presenter to mix the podium mic with the computer audio signal via front panel (3.5mm stereo input) and send the mixed signal to the main system. The USB input allows a Samson XPD Series wireless lavalier, headset or handheld mic system receiver to be easily connected to the front panel.


  • Samson SM4 4-Channel Mixer with Bluetooth Capability, Wireless Microphone Receiver, and Rack Kit
  • 4-channel stereo line mixer
  • Microphone input with 2-band EQ (balanced XLR-1/4" combo)
  • Stereo line input (rear-mounted RCA, front-mounted stereo 1/4” and 1/8” [3.5mm])
  • Bluetooth connectivity to wirelessly stream music
  • Easily connect Bluetooth capable device with "pair" button
  • USB port for use any device, great for phone charging
  • The Voiceover feature allows you to lower the music (up to 30dB of ducking) while talking through a microphone or when using the XPD Wireless input.
  • Voiceover Threshold knob lets you adjusts the active ducking hold time from 0.5–3 seconds
  • Master volume control on rear of unit
  • Phantom Power: 15V
  • Mono/Stereo output switch
  • The outer casing is made of steel and is very compact
  • Rack mount kit and power adapter included
  • Frequency Response: 30Hz–30kHz
  • T.H.D.: <0.02% (Mic/Line & Line to Main)
  • Maximum Input Level: -18dB @ 1kHz (Mic Input)
  • Maximum Output Level: +14dB
  • Input Channel EQ: ±12dB @ 12kHz (High)±10dB @ 80Hz (Low)
  • USB Bus Power: +5V DC 0.2A max
  • Unit Dimensions (H x W x D): 1.75” x 8.75” 5.5” in. (43mm x 223mm x 138mm)
  • Unit Weight: 1.76lb (0.8kg)
  • Power Requirement: DC15V

Click here to see the manual

Videos of RPB27:


  • Bluetooth Speaker
  • Aluminum Carabiner Clip – to clip speaker to your backpack
  • String to hang from a showerhead or tie to a backpack
  • MicroUSB Charging Cable
  • User Manual and Warranty Card

The RPB27 is a portable Bluetooth speaker that is the perfect size and power. This speaker is big enough that our engineers were able to get the speaker to produce 20 watts of power with huge bass! It is small enough to bring it with you camping, hiking, or anywhere else. The speaker is extremely rugged! It is shockproof and IPX6 water resistant. This means you can throw it around and bring it in the shower and the speaker will never break!

There may be some similar looking Bluetooth speakers on the market but this is the only speaker at this price point that is rugged, water resistant, and has huge power with huge bass!

Below is what makes ours better:

IPX6 Water Resistant

The RPB27 is water resistant, or splash proof. You can take it with you into the shower, or by the pool side. In reality this speaker can be thrown into water without getting damaged, but we are rating it as splashproof. I tested it in the shower and put it under the showerhead with no problems.

Amazing Power with Bumping Bass!
This speaker puts out a huge 20 watts of power. Its louder than any other speaker I have tested that was similar in size. I’ve tested many Bluetooth speakers, and this one sounds better than speakers that are way bigger! Our sound quality is amazing. This speaker has great bass and crystal clear highs with a distortion rating of less than 1%. What makes the bass so loud is that the speaker has a passive radiator to enhance the bass. That basically mean the speaker has an extra subwoofer built in that focuses on playing back bumping bass!

Rugged Design
Built with 100% ROHS Silicone & ABS, this enclosure design delivers top of the line sound quality. It includes rubber feet for great sound when placing the speaker on any hard surface. The design mold is an exclusive Rockville design!

Huge Battery Life
This is a big advantage with our unit. We use a high quality original 1,000 mAH battery rated for up to 18 hours of playback at 50% volume.

Amazing Bluetooth Integration
This uses the latest and most reliable Bluetooth chip. It has Bluetooth 4.1 technology with enhanced data rate and a range of 40 feet! This guarantees a crystal clear signal even when you are away from the unit. Pairing your phone or other Bluetooth enabled device is super easy! There is no password required. Simply turn the unit on and it automatically connects to your device.

Tons of Applications:

  • Shower Speaker
  • Desktop speaker at work or home
  • Hiking
  • Camping
  • Pool or beach
  • Kitchen speaker
  • Laptop, iPad, computer speaker


  • Rockville RPB27 rugged waterproof portable Bluetooth speaker with 20 watts power
  • IPX6 Water Resistant
  • 20 watts peak power
  • 10 watts continuous RMS
  • Battery charges with included USB cable
  • 1000 mAH battery supports 18 hours of playback at 50 % volume!
  • Charge time: 4-5 Hours
  • Our speaker has the loudest bass from any competing Bluetooth speaker!
  • Extremely loud, powerful, and rugged
  • Material: 100% ROHS Silicone & plastic – This enclosure design delivers top of the line sound quality
  • Perfect for camping, hiking, pool, beach, shower, bedroom, iPad/Laptop speaker, kitchen and many other applications
  • Includes Aluminum hook to latch it onto a backpack, pocket book, etc
  • Bluetooth version. 4.1 with EDR (Enhanced Data Rate)
  • A2DP audio streaming 40 foot max Bluetooth range
  • Playback Controls - Play, Pause, Skip Forward, Skip Back, Volume Up, Volume Down
  • Will control next song, pause, play on popular apps like Pandora, Spotify, and others
  • Can control next song, pause, and play from the Bluetooth speaker
  • The built-in mic allows you to speak through the device so you can make and receive phone calls hands-free
  • Rugged and Shockproof!
  • Rubberized impact-resistant silicone feet for great sound when placing speaker on any hard surface
  • Compatible with any Bluetooth devices such as iPad, iPhone, Laptops, Android phone, other cell phones, iPods, other Bluetooth MP3 Players
  • Distortion: Less than 1 %
  • Natural sound with enhanced bass response
  • Frequency Response: 145HZ-18KHZ
  • Dimensions of Unit (inches): 6.22” x 2.1” x 2.44”
  • Unit weight: 0.77 lbs

Owner’s Manual

About Rockville Quality Control Procedures:
The Rockville brand stands for Quality, Innovation and Value. All Rockville products go through the most rigorous quality control standards in the industry. Products go through months of extensive testing before they reach your hands. All user functions are tested and all internal components are tested for quality. Rockville makes products that are virtually un-breakable! Rockville is one of the only brands in its class to test every concept model for weeks or months before starting production. Once production begins, Rockville sends product engineers to their factory to quality control every line of production. During production every product is tested and on top of that Rockville goes the extra mile and has their high level product engineers do an additional quality control. They test a certain percentage of all products from the production line a second time to ensure that the quality meets their vigorous standards, and to make sure that there is never a batch of products with even a slight problem. All Rockville products are backed with a full 1 year warranty, though it is unlikely that you will need to use the warranty.
  • UPC:
  • 613815901396

New orders ship within 1 business day
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