Yamaha STAGEPAS 400BT Portable PA System with Bluetooth

The Yamaha Stagepas 400BT is a popular and highly portable all-in-one PA system designed for musicians, public speakers, and event hosts. It is the smaller sibling to the Stagepas 600BT and provides a convenient, powerful, and easy-to-use solution for sound reinforcement in small-to-medium-sized venues. The "BT" in the model name signifies its built-in Bluetooth audio streaming capability.

Here is a detailed breakdown of its key features:

Core Concept & Sound

• All-in-One Design: The Stagepas 400BT consists of a powered mixer that clips into the back of one of the two passive speakers. The other speaker's back panel has a compartment to store the included power cord and speaker cables. This makes it incredibly easy to transport the entire system in a single trip.

• 400W of Power Output: The system delivers a total of 400 watts of dynamic power (200W per side). Its two-way speakers, each with an 8" woofer and a 1" compression driver, provide a maximum SPL of 125 dB and a frequency range of 55 Hz to 20 kHz.

• Bluetooth Audio Streaming: The integrated Bluetooth input allows you to wirelessly stream music from a smartphone, tablet, or other compatible device, which is perfect for playing backing tracks, intermission music, or for use at parties and events.

• Intuitive Digital Processing: The system features several built-in DSP functions to enhance your sound:

  • 1-Knob Master EQ: This feature simplifies the process of optimizing your sound. You can turn a single knob to select between presets for "Speech," "Music," and "Bass Boost."

  • SPX Digital Reverb: The mixer includes four types of high-quality digital reverb (Hall, Plate, Room, and Echo) with a dedicated knob to control the type and time. An optional footswitch can be used to turn the reverb on and off hands-free.

  • Onboard Feedback Suppressor: With a single button, this intelligent function automatically detects and removes feedback.

Mixer & Connectivity

• 8-Channel Detachable Mixer: The mixer provides a comprehensive set of inputs for a variety of sources:

  • Four mono microphone/line inputs with phantom power on channels 1 and 2.

  • Four mono / two stereo line inputs.

  • A Hi-Z switch on channel 4 for direct connection of instruments with passive pickups, such as an acoustic-electric guitar or bass.

• Flexible Outputs: The mixer has outputs for a variety of expansion options. You can connect a pair of powered speakers to the Monitor Out jacks to create a stage monitor system, or connect a powered subwoofer to the Subwoofer Out jack to add more bass to your system.

• 2-Band Channel EQ: The mixer provides a 2-band EQ (High and Low) on each channel for basic sound shaping. This is a key difference from the Stagepas 600BT, which has a more flexible 3-band EQ with a dedicated Mid-range control.

• Versatile Inputs: The mixer has a range of input terminals, including XLR, 1/4" phone, stereo RCA, and a 1/8" stereo mini jack, making it compatible with a wide range of devices.

Build Quality & Portability

• Rugged Construction: The speakers and mixer are designed for durability and are built to handle the rigors of frequent transport. The speakers have a molded top handle and pole sockets for stand mounting.

• Lightweight: The entire system weighs only about 40.3 lbs (18.3 kg), making it incredibly portable and easy to carry.

Overall Impression

The Yamaha Stagepas 400BT is an excellent choice for:

• Solo Performers and Duos: Its compact size, built-in mixer, and powerful sound make it a perfect all-in-one solution for small gigs.

• Public Speakers and Presenters: The feedback suppressor and 1-Knob Master EQ make it easy to get a clear, professional sound for conferences, speeches, and events.

• DJs and Event Planners: Its powerful output and Bluetooth connectivity make it a great option for parties, weddings, and background music applications.