Pulled from a working building for a remodel. I tested the analog input and it outputs on all 4 channels. Missing screws on back, some scuffs from racking.

Good unit!

Info from manufacturer:

Ideal for zone-expansion applications, Bose Professional PowerSpace amplifiers enhance any premium commercial sound installation with clean, reliable power — and digital connectivity. A Bose Professional AmpLink input allows for multiple channels of uncompressed, low-latency digital audio from Bose Professional DSPs via a single Cat 5 cable. The PowerSpace P4300A provides 300 watts per channel and features versatile outputs that give you the flexibility to deliver full channel power to either low- or high-impedance loads — without bridging — and even send double power to a single zone. For premium commercial applications, PowerSpace amplifiers provide the power and performance to get the job done — pure and simple.

FEATURES

300 watts per channel and works seamlessly with loudspeakers, DSPs, and controls to create complete commercial sound systems

AmpLink input for simplified multichannel digital audio connection to compatible DSPs, reducing terminations and related points of failure

Load-independent outputs deliver full channel power to either low-impedance loads (4-8 Ω) or high-impedance (70/100V) loads without bridging

I-Share outputs deliver 2x power level by combining the current of two channels

Auto-standby mode saves power when audio signal falls below a set threshold, then wakes when audio returns

Applications

Designed for a wide range of applications, including:

Retail stores

Restaurants and bars

Hospitality venues

Conference centers

Schools

Auxiliary zones

SPECS

TECHNICAL SPECIFICATION

AMPLIFICATION

Channel Separation (Crosstalk)

> 80 dB at 1 kHz, > 65 dB at 20 kHz

Dynamic Range

≥ 100 dB at rated power, A-weighted

Gain, High-Impedance

35 dB, 70V mode / 38 dB, 100V mode

Gain, Low-Impedance

32 dB

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

Number of Channels

4

Power Class

Class D

Rated Power, Symmetrical

300 W

THD+N

< 0.04% at 1 kHz, 4–8 Ω, 70V/100V

AUDIO INPUTS, ANALOG

Input Channels

4 balanced

Connectors

(2) 6-pin Euroblock

Input Impedance

10 kΩ

Maximum Input Level

22 dBu at 14 dBu sensitivity

Sensitivity

-10 dBV, 4 dBu, 14 dBu

AUDIO INPUTS/OUTPUTS, DIGITAL

Channels

8 AmpLink in, 8 AmpLink thru

Connectors

(1) RJ-45 AmpLink in / (1) RJ-45 AmpLink thru

Type

2 × 6-pin Euroblock

AUDIO OUTPUTS, ANALOG

Channels

4

Connectors

(1) 8-terminal block

COMPLIANCE

EMC

This product meets all EN55103-2 immunity requirements for E2 electromagnetic environment.

ELECTRICAL

Mains Connector

IEC 60320-C14 inlet

Mains Voltage

100–240 VAC (±10%), 50/60 Hz

AC Power Consumption

25 W auto-standby, 570 W maximum

INDICATORS AND CONTROLS

Controls, Front Panel

(1) power button

Controls, Rear Panel

Mute, output attenuators, DIP switches for amplifier configuration, input selector, update port, gain/sensitivity

LED Status Indicators

(1) power/status LED, (4) input signal LEDs, (4) output limit LEDs

INTEGRATED DSP

DSP-Enabled

No

PHYSICAL

Colors

Gray

Cooling System

Microprocessor-controlled variable-speed fans, front-to-back air flow

Suspension/Mounting

Rack-mounting

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)

Rack Spaces

1

Shipping Weight

19.0 lb (8.6 kg)