Yamaha STAGEPAS 300 Portable PA system is no longer available. It has been superseded by the Yamaha Stagepas 400i.
No matter where your music leads, Yamaha's new STAGEPAS™ 300 Portable PA system has the power and portability to go with you. It has all the power and high-quality sound you need to fill a small performance space, yet it is small and light enough to take wherever it is needed. Combining a built-in powered mixer and PA speakers, it's incredibly easy to use — you can be set up and playing in a matter of minutes! STAGEPAS™ 300 is the perfect road companion, providing powerful, reliable, convenient sound reinforcement for a wide variety of applications.
Great sound has never been so portable — and so easy to use. High quality, convenience, and power to go!
STAGEPAS™ 300 is a portable PA system that can be set up to provide high quality live sound anywhere, anytime. Designed primarily for musicians on the move, STAGEPAS™ 300 makes it possible to deliver high-quality live sound in just about any venue or environment with maximum handling ease and minimum hassle.
This all-in-one system provides a pair of passive speakers, a detachable powered mixer, and a pair of speaker cables — everything you need except for your sources. The whole system weighs just 18 kilograms!

An accessory compartment
The powered mixer is normally stored in the rear of one of the speakers. The STAGEPAS™ powered mixer can be detached (the only tool you need is a coin) for convenient operation. The power amplifier is a class-D* type that delivers a solid 150 watts + 150 watts from a remarkably compact unit. The mixer has a total of eight input channels: four mono microphone/line inputs and two stereo line inputs. In addition to speaker outputs for the supplied speakers, the STAGEPAS™ mixer has line outputs that can be used to connect additional powered speakers for monitoring, or to send the mixer's output to a recording device.
* Class-D power amplifiers provide high-efficiency amplification with low power consumption and minimal heat generation, allowing the amplifier to be built into a smaller, lighter, and cooler package.

Built-in powered mixer
Each mixer channel has an easy-to-use two-band equalizer that can help to shape the sound of each channel to achieve the best possible mix. Boost the highs to give a vocal channel more air and clarity, or boost the lows on a guitar channel for more punch. The four mono input channels have reverb on/off switches, and a reverb level control lets you add just the right amount of reverb to bring your sound to life.
The built-in high-quality reverb is indispensable for great vocal sound, and it can add a lush dimension to the sound of electric-acoustic guitars as well.
The STAGEPAS™ mixer has a "speech" mode that optimizes the system settings for maximum clarity with speech. Of course, background music from a CD player or other source can be mixed in with the spoken performance.
Multiple microphone inputs make the STAGEPAS™ 300 system a good choice for band rehearsals or performances. MSR100 powered monitors (sold separately) can be added for monitoring.
The optional BMS-10A Mic Stand Adaptor allows the STAGEPAS™ mixer unit to be mounted on a standard straight microphone stand. Mic stand mounting is an ideal way to position the mixer for easy control access while performing.

Optional adaptor enables mic-stand mounting.
| Maximum output power | 150W + 150W /6ohms@10% THD at 1kHz 100W + 100W /6ohms@ 1% THD at 1kHz |
| Frequency response | -3dB, 0dB, +1dB @20Hz-20kHz, 1W Output/6ohms (MUSIC/SPEECH switch=[SPEECH])(SPEAKER L/R) -3dB, 0dB, +1dB @20Hz-20kHz, +4dBu 10kohm load (MUSIC/SPEECH switch=[MUSIC])(MONITOR OUT,REC OUT) |
| Total harmonic distortion | Less than 1% @1kHz, 50W Output Power (SPEAKER L/R) Less than 0.5% @20Hz-20kHz, +14dBu 10kohm load (MONITOR OUT,REC OUT) |
| Hum & noise *1 | Less than -65dBu (Residual noise)(SPEAKER OUT) Less than -90dBu (Residual noise)(MONITOR OUT,REC OUT) |
| Crosstalk (1kHz) | Less than -70dB |
| Channel EQ ±15dB (MAX) |
HIGH: 10kHz shelving LOW: 100Hz shelving |
| Dimensions | 275W x 456H x 255Dmm (Speaker x 1) 290W x 96H x 160Dmm (Mixer) |
| Weight | 18kg (Mixer + Speaker x2) |
| Power consumption | 70W |
* 1:20Hz-20kHz, Rs=150ohms, MIC/LINE switch=MIC
* 2:Shelving turnover/rolloff frequency: 3dB before maximum or boost.
| Enclosure | Bass-reflex type |
| Speaker unit | LF:8" (20cm) cone HF:1" (2.54cm) Compression driver |
| Crossover frequency | 4kHz |
| Frequency range | 55Hz to 20kHz |
| Maximum output level | 112dB (1m) |
| Input terminal | MIC/ LINE |
Actual load impedance | For use with nominal | Input level | Connector | |||
|---|---|---|---|---|---|---|---|---|
| sensitivity | Nominal | Max. before clip | ||||||
| CH INPUT 1-4 | XLR | MIC | 2kohms | 50-600 ohm Mics | -60dBu | -35dBu | -15dBu | XLR-3-31 type |
| LINE | -30dBu | -5dBu | +15dBu | |||||
| Phone | MIC | 6Kohms | 600ohm Lines | -50dBu | -25dBu | -5dBu | TRS phone jack | |
| LINE | -20dBu | +5dBu | +25dBu | |||||
| CH INPUT 5/6-7/8 | 10kohms | 600ohm Lines | -20dBu | +5dBu | +25dBu | Phone jack, RCA pin jack | ||
| Output terminal | Actual source impedance | For use with nominal | Output level | Connector | |
|---|---|---|---|---|---|
| Nominal | Max. before clip | ||||
| SPEAKER OUT | 0.1ohms | 6ohms Speakers | 25W | 100W | Phone jack |
| POWERED SP [L,R] | 600ohms | 10kohms LINE | +4dB | +20dB | Phone jack |
| REC OUT [L,R] | 600ohms | 10kohms LINE | -10dBV | +10dBV | RCA pin jack |
• Musiclab’s M-Audio site
• Musiclab’s ProTools Mbox site