Bose Professional PowerSpace P4300+ Power Amplifier

Bose Professional PowerSpace P4300+ is a commercial power amplifier with integrated DSP designed for premium distributed audio installations. It enables amplification, signal processing, and zone control within a single rack-mounted unit for installers and system integrators. This makes it ideal for commercial environments where efficient setup, predictable performance, and flexible control are critical.

The amplifier provides four channels of Class D amplification with load-independent outputs that support low-impedance and 70/100V systems without bridging. Integrated DSP supports mixing, routing, equalization, delays, limiters, and loudspeaker presets through a browser-based configuration utility. Network connectivity enables configuration and monitoring using standard web browsers.

The P4300 Plus supports scalable system designs with simplified commissioning and intuitive end-user operation. Optional ControlCenter zone controllers allow local volume and source control. Automatic standby functionality reduces power consumption during idle periods in commercial installations.

Key Features

• Four-Channel Amplification: Delivers 300 W per channel for distributed commercial sound systems
• Integrated DSP: Supports mixing, routing, EQ, delays, limiters, and loudspeaker presets
• Browser-Based Configuration: Built-in webserver enables setup and monitoring via standard browsers
• Load-Independent Outputs: Supports 4–8 Ω and 70/100V systems without bridging
• I-Share Output Mode: Combines channel current to deliver double power to a single zone
• Opti-Voice Paging: Provides smooth transitions between music and paging audio
• Auto-Standby Operation: Reduces power consumption when audio signal is inactive
• Zone Control Support: Compatible with optional ControlCenter analog zone controllers

Technical Specifications

Amplifier Class
Class D

Number of Channels
4

Rated Power, Symmetrical
300 W per channel

Maximum Peak Power, Symmetrical
600 W

Frequency Response
20 Hz – 20 kHz (±1 dB) at 1 W, 4–8 Ω
20 Hz – 20 kHz (±1 dB) at 1 W with 50 Hz high-pass filter, 70/100V

Dynamic Range
≥ 100 dB at rated power, A-weighted

THD+N
< 0.04% at 1 kHz, 4–8 Ω, 70V/100V

Channel Separation (Crosstalk)
> 80 dB at 1 kHz
> 65 dB at 20 kHz

Gain, Low-Impedance
32 dB

Gain, High-Impedance
35 dB (70V mode)
38 dB (100V mode)

Analog Audio Inputs
4 balanced channels
2 unbalanced channels

Input Connectors
(3) 3-pin Euroblock
(1) 4-pin Euroblock
(2) RCA stereo pairs

Analog Audio Outputs
4 loudspeaker outputs
2 auxiliary line outputs

Output Connectors
(1) 8-terminal block
(1) 3-pin Euroblock, line

Integrated DSP
Yes

DSP Sample Rate and Resolution
48 kHz / 24-bit A/D and D/A conversion

Audio Latency
< 1 ms, analog input to analog loudspeaker output

DSP Functions
Input EQ
Loudspeaker EQ
Matrix mixer
Delays
Peak and RMS limiters
Mute and polarity inversion

Mains Voltage
100–240 VAC (±10%), 50/60 Hz

AC Power Consumption
25 W auto-standby
570 W maximum

Cooling System
Microprocessor-controlled variable-speed fans
Front-to-back airflow

Rack Mounting
1 RU rack space

Operating Temperature Range
0 °C to 40 °C (32 °F to 104 °F)

Product Dimensions (H × W × D)
1.7 in × 19.0 in × 16.5 in
44 mm × 483 mm × 420 mm

Net Weight
14.6 lb (6.6 kg)

Shipping Weight
19.0 lb (8.6 kg)

Warranty Period
5 years

What’s in the Box

(1) PowerSpace P4300 Plus power amplifier
(1) IEC power cord
(1) Installation guide
(2) I-Share jumpers
(1) 2-pin Euroblock connector
(1) 4-pin Euroblock connector
(5) 3-pin Euroblock connectors
(10) Terminal forks, 14–16 AWG