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Yamaha STAGEPAS 400BT Portable 8-channel PA system with Bluetooth® streaming

Item # 845SP400BT

If you're looking for a PA system that's simple to use and easy to transport, check out Yamaha's STAGEPAS 400BT.

If you're looking for a PA system that's simple to use and easy to transport, check out Yamaha's STAGEPAS 400BT.

4 questions - 3 answers

Item # 845SP400BT

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$899.99 each

About the Yamaha STAGEPAS 400BT

Buck Pomerantz

Get heard

If you're looking for a PA system that's simple to use and easy to transport, check out Yamaha's STAGEPAS 400BT. Ideal for a small band, auditorium, or coffeehouse, this compact PA will deliver outstanding sound wherever you perform.

Get heard

If you're looking for a PA system that's simple to use and easy to transport, check out Yamaha's STAGEPAS 400BT. Ideal for a small band, auditorium, or coffeehouse, this compact PA will deliver outstanding sound wherever you perform.

Almost everything you need

This all-in-one PA system consists of two lightweight speakers and an 8-channel powered mixer, along with a pair of speaker cables and a power cord. A storage compartment on the back of one speaker holds the mixer when it's not in use, and the other speaker has a compartment for the cables. Both speakers feature pole sockets for mounting on stands and molded handles for convenient transport.

Simple and intuitive mixer

The mixer's channel strips are laid out logically with 2-band EQ and level controls that allow you to achieve perfect balance and tone to your music and vocal presentations. Yamaha kept it all simple so the STAGEPAS 400BT, for example, will work well in any venue where a different person could be in charge of setting up and running the system at each event.

Special effects and controls

One knob controls the onboard SPX digital reverb, letting you choose between four kinds of reverb and echo. You also get a one-knob tone control over the output, so it's easy to get just the right sound for the gig, whether you're giving a speech, playing a show, or DJ-ing a wedding reception. A feedback suppressor — a feature usually found only on high-end equipment — lets you get rid of annoying squeals with the touch of a button.

There's more

Line-level outputs let you expand your system with additional powered speakers, like monitors and subs, so this PA gives you room to grow. A built-in limiter circuit protects against overloading speakers, so you'll get years of use out of your STAGEPAS 400BT. You'll also appreciate the Bluetooth connection, so you can stream music wirelessly from your compatible device into the PA.


STAGEPAS 400BT 8-channel powered mixer


General features:

  • compact portable PA system
  • two 2-way bass reflex speakers (8" woofer and 1.4" compression driver)
  • 8-channel powered mixer
    • power rating: 200W x 2 dynamic, 180W X 2 continuous
  • 4 mic inputs
    • ch 1 and 2: mic/line (XLR only), switchable phantom power
    • ch 3: mic/line
    • ch 4: mic/line, Hi-Z switch
  • SPX digital reverb available on ch 1-4 (hall, plate, room, echo)
  • ch 5/6, 7/8: stereo line (including RCA, 3.5mm, Bluetooth)
  • 2-band EQ on all channels
Other Features:
  • onboard feedback suppressor
  • one-knob master EQ
  • line outputs: left/right monitor, subwoofer
  • speakers feature 34.8-35.2mm pole socket with StageLok™
  • speaker cables included
  • speaker dimensions (each): 11-7/16" W x 18-5/8" H x 10-7/8" D
  • mixer dimensions: 12-1/8" W x 7-1/8" H x 5-9/16" D
  • weight: 40.3 lbs (2 x 17 lb speakers + 6.4 lb mixer)
  • warranty: 1 year

What's in the box:

  • 2 PA Speakers
  • Mixer
  • 78" Power cord (IEC 3-pin)
  • Two lengths of 19.5' Speaker cables (terminated with 1/4" TS jacks)
  • 2 Ferrite cores
  • 2 Cable-ties
  • Sheet with 12 adhesive rubber non-skid pads
  • Owner's manual (Eng / Span / Fren)
  • Note for installing non-skid pads
  • Note for installing ferrite cores
  • Safety and warnings sheet

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More details on the Yamaha STAGEPAS 400BT

Russ B.

Features & specs

Mic inputs 4
Line inputs 6
Phantom power Yes
Channel EQ Y
Master EQ Y
Monitor outputs (2) 1/4" TS
Built-in effects Y
Number of speakers 2
Drivers per speaker 2
Woofer Size (inches) 8"
Tweeter Size (inches) 1.4"
System Frequency response 55-20k
The Yamaha STAGEPAS 400BT replaces these items:

Product Research


Overview: The Yamaha STAGEPAS 400BT is a 400 watt portable PA system that includes an 8 channel powered mixer, two 8" speakers, Bluetooth input, 2-band EQ, built-in SPX digital reverb, feedback suppression, and much more. This all-in-one PA system is compact and light enough to carry by hand and features a detachable powered mixer that allows you to keep it within reach during your performance. With 2 mic inputs, 2 mic/line inputs including one that accepts instrument level signals, 2 sets of stereo input channels, auxiliary input for portable devices, and Bluetooth audio streaming, the 400BT is perfect for individual musicians, small performing groups, and presentations.

Mixer: The included 8 channel powered mixer is designed to snap into the back of one of the speakers for transportation, but can be removed and placed near you for ease of parameter changing during a performance.

  • Channels 1 - 4: The first 4 input channels are mono and can accept mic or line level signals, with 1 and 2 using an XLR jack while 3 and 4 have XLR/1/4" combo jacks. Channel 4 includes a Hi-Z switch for running instrument level signals directly into the mixer without the need for a DI box. Each of these has a 2-band EQ with the High control shelving at 8 kHz and the Low control shelving at 100 Hz, both with +/-15 dB range. These 4 inputs include individual Reverb amount knobs that control the amount of Reverb/Echo for that channel when the Master Reverb/Echo is applied. Each channel also includes a Level control.
  • Channels 5 - 8: Channels 5/6 and 7/8 are configured as stereo inputs, but can also be switched to mono with each channel's ST/Mono button. Both of these channels include dual 1/4" inputs, that accept line-level signals, with Channels 5/6 also including stereo RCA jacks. Channels 7/8 include an 1/8" stereo input for running a portable device through the mixer and also double-up as the Level control for any Bluetooth audio being streamed in. These channels also include 2-bands of EQ and their own Level controls.
  • Master Section: This section includes a Master Level for controlling the overall output volume. This works in conjunction with a 6-segment LED output level meter that includes a peak/limiter indicator. There's a Master EQ knob that varies the output equalization from Speech (all the way to the left - least amount of bass), to Music (mid point in knob travel), to Bass Boost (turned all the way to the right). A single Reverb Type/Time knob determines both the type of effect, with choices being Hall, Plate, Room, and Echo, and the amount for whichever one is selected. A feedback switch with corresponding LED is provided to automatically suppress any feedback using an internal 7-band notch filter. A master Reverb On with LED indicator can quickly switch the Reverb to all channels off and on, and a Phantom switch with LED will activate +30 volts of phantom power to Input Channels 1 and 2. The Master section also includes a Monitor Out Level control for adjusting the signal level from the Monitor Out jacks, if being used. Other functions include the main Power button and a Bluetooth button for activating and pairing a Bluetooth audio device.
  • Output Jacks: Two 1/4" jacks provide output connections for the two speakers, using the included 19.5' cables. A set of Left/Right 1/4" Monitor outputs is provided. These output the main mix signal before it runs through the Speaker EQ, the Master EQ, the Master Output level, and the output amplifier. A single 1/4" Subwoofer jack is provided that, if used, applies a 120 Hz cutoff to the Main speaker outputs while sending those frequencies out to a subwoofer (sold separately). The Output section also includes a Reverb Footswitch jack that allows an unlatched-type footswitch to be used to toggle the Reverb on and off.

Speakers: The Yamaha STAGEPAS 400BT includes a pair of two-way PA speakers, each with a 10" woofer and a 1.4" high-frequency compression driver, and able to handle up to 340 watts peak power each. Their bass-reflex enclosure design can provide up to 90˚ of horizontal and 60˚ of vertical coverage, when standing, and 50˚ of coverage when laid on their side as a floor monitor. The back of one speaker acts as the dock for the powered mixer and the other speaker's back compartment is a convenient storage space for the power cord and speaker cables. Each speaker has a built-in carry handle on the top for portability, as well as a 35 mm socket on the bottom for pole mounting. The pole sockets also include quick-set/release StageLoks for a secure attachment and can accommodate pole-mounts from 34.8 mm to 35.2 mm in diameter.


  • Inputs: 4 Mono mic/lines, 4 mono / 2 stereo lines
  • Phantom Power: +30 V (CH 1 and 2)
  • Outputs: L/R 1/4" Speaker outputs, L/R 1/4" Monitor outputs, Subwoofer output with auto HPF.
  • Hi-Z Inputs: Ch 4
  • DSP: SPX digital reverb (4 program, parameter control)
  • Maximum Output Power: 400 Watts (200 W + 200 W, Peak), 360 W (180 W + 180 W, Continuous)
  • Channel EQ: High - 8 kHz high-shelf, Low - 100 Hz low-shelf, +/-15 dB
  • Frequency Range (-10 dB): 55 Hz - 20 kHz
  • Speakers:
    • Enclosure: 2 Way bass-reflex type
    • Low Frequency Driver: 8" Woofer
    • High Frequency Driver: 1.4" Voice-coil compression driver
    • Pole Socket: 34.8 mm - 35.2 mm with StageLoks
  • Nominal Coverage:
    • Horizontal: 90˚
    • Vertical: 60˚
    • Floor Monitor: 50˚
  • Maximum Output Level (1m on axis): 125 dB SPL per speaker
  • Bluetooth:
    • Version: 4.1
    • Supported Profile: A2DP v. 1.2
    • Wireless Output: Bluetooth Class 2
    • Maximum Range: 33 Ft. (10 m)
    • Transmission Frequencies: 2402 - 2480 MHz
    • Maximum Output Power: 4 dBm (2.5 mW)
  • Dimensions:
    • Speakers: Width - 11.13", Height - 18.50", Depth - 10.75"
    • Mixer: Width - 12.0", Height - 7.0", Depth - 4.63"
  • Power Requirement: 100V - 240V, 50/60 Hz
  • Power Consumption: 30W (Idle), 70W (1/8 power)
  • Weight:
    • Overall: 40.3 lbs.
    • Speaker: 17.0 lbs. x 2
    • Mixer: 6.40 lbs.

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Customer Q&A

4 questions already asked

Can it be operated with just one speaker? Solo gig in a small room to minimize equipment to haul in.
jesse  Nov 20, 2022
1 answer
This can be operated with only one speaker. In this situation, use the L (left) monitor out jack (highlighted in red) on the mixer.
zachary  Nov 20, 2022 (Staff)
Can you connect to smart tv?
steveo  Nov 19, 2020
1 answer
That is not what this system is designed for. It is not recommended.
thomas  Dec 03, 2020 (Staff)
Can i get a tax free quote for this unit?
ic2 deramus  Nov 18, 2018
1 answer
The price before tax is provided on the system's main webpage. For additional assistance and personalized recommendations, feel free to contact us directly by phone or through our online chat service: For business to business and/or tax exempt purchases, you can contact our Corporate Sales department:
ryan  Nov 21, 2018 (Staff)

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