01 / 06
Intelligent Power Distribution
Dynamically allocates up to 600 W of total output power across eight channels, matching connected loudspeaker loads for efficient power utilization.
Flexible Amplification
IP-connected and fully-featured
PRAESENSA Public Address and Voice Alarm System
PRAESENSA system components
PRA-AD608 PRAESENSA 8-Channel Amplifier
600 W partitioned freely across eight Class D channels, each with A/B outputs and DSP, plus an integrated spare channel for fail-safe redundancy.
- 600 W 8 Channels
- Spare Channel Built In
- EN 54-16 ISO 7240-16
IP-connected and fully-featured
PRAESENSA Public Address and Voice Alarm System
PRAESENSA system components
PRA-AD608 PRAESENSA 8-Channel Amplifier
600 W partitioned freely across eight Class D channels, each with A/B outputs and DSP, plus an integrated spare channel for fail-safe redundancy.
- 600 W 8 Channels
- Spare Channel Built In
- EN 54-16 ISO 7240-16
PRA-AD608 · PRODUCT VIEWS
Explore the PRA-AD608 Inside & Out
Take a closer look at the Bosch PRA-AD608, through its labeled front-panel indicators and rear-panel connection groups, including channel supervision, power inputs, loudspeaker outputs and OMNEO network interfaces.
FRONT PANEL · 01 / 02
PRA-AD608 · PRODUCT VIEWS
Explore the PRA-AD608 Inside & Out
Take a closer look at the Bosch PRA-AD608, through its labeled front-panel indicators and rear-panel connection groups, including channel supervision, power inputs, loudspeaker outputs and OMNEO network interfaces.
FRONT PANEL · 01 / 02
PRA-AD608 · TECHNOLOGY IN ACTION
Powering Reliable Sound
Explore how the PRA-AD608 supports intelligent eight-channel amplification within Bosch PRAESENSA, alongside videos about the wider system.
01 / 05 · OMNEO IP networking
IP audio and control
The PRA-AD608 integrates with the PRAESENSA system through its OMNEO network interface for digital audio and control.
- Two Ethernet ports support RSTP and loop-through network connections.
- OMNEO carries digital audio and control data; the amplifier supports Dante and AES67 compatibility.
- Network-link supervision supports fault reporting through the system controller.
02 / 05 · Intelligent power utilization
600 W shared power budget
Eight amplifier channels share a total maximum loudspeaker output budget of 600 W.
- The available power is flexibly partitioned across eight channels according to connected loudspeaker loads.
- Transformerless, galvanically isolated 70 V / 100 V outputs support flexible loudspeaker installations.
- Efficient Class-D amplifier architecture helps limit heat loss and energy consumption.
03 / 05 · Automatic fail-safe redundancy
Built-in spare channel
An independent spare amplifier channel supports automatic failover if one of the main channels fails.
- The spare channel can automatically replace a failed channel while retaining its audio-processing settings.
- Dual 48 V DC power inputs each have a DC/DC converter for power-input redundancy.
- A backup analog lifeline input supports emergency audio when the network interface or both network connections fail.
04 / 05 · Supervised loudspeaker lines
Protected A/B outputs
Each of the eight PRA-AD608 channels provides two separately supervised loudspeaker outputs.
- Independent A and B loudspeaker outputs allow redundant wiring topologies.
- Loudspeaker-line integrity can be supervised using separately available end-of-line devices.
- Class-A loudspeaker-loop wiring is supported between each channel’s A and B outputs.
05 / 05 · Per-channel audio processing
DSP for every zone
Each of the eight amplifier channels provides individual digital signal processing.
- Each channel supports equalization, audio delay and limiting for zone-specific tuning.
- Individual sound processing helps tailor speech intelligibility to the connected loudspeaker zone.
- The amplifier is designed for Bosch PRAESENSA public address and voice alarm applications.
PRA-AD608 · TECHNOLOGY IN ACTION
Powering Reliable Sound
Explore how the PRA-AD608 supports intelligent eight-channel amplification within Bosch PRAESENSA, alongside videos about the wider system.
01 / 05 · OMNEO IP networking
IP audio and control
The PRA-AD608 integrates with the PRAESENSA system through its OMNEO network interface for digital audio and control.
- Two Ethernet ports support RSTP and loop-through network connections.
- OMNEO carries digital audio and control data; the amplifier supports Dante and AES67 compatibility.
- Network-link supervision supports fault reporting through the system controller.
02 / 05 · Intelligent power utilization
600 W shared power budget
Eight amplifier channels share a total maximum loudspeaker output budget of 600 W.
- The available power is flexibly partitioned across eight channels according to connected loudspeaker loads.
- Transformerless, galvanically isolated 70 V / 100 V outputs support flexible loudspeaker installations.
- Efficient Class-D amplifier architecture helps limit heat loss and energy consumption.
03 / 05 · Automatic fail-safe redundancy
Built-in spare channel
An independent spare amplifier channel supports automatic failover if one of the main channels fails.
- The spare channel can automatically replace a failed channel while retaining its audio-processing settings.
- Dual 48 V DC power inputs each have a DC/DC converter for power-input redundancy.
- A backup analog lifeline input supports emergency audio when the network interface or both network connections fail.
04 / 05 · Supervised loudspeaker lines
Protected A/B outputs
Each of the eight PRA-AD608 channels provides two separately supervised loudspeaker outputs.
- Independent A and B loudspeaker outputs allow redundant wiring topologies.
- Loudspeaker-line integrity can be supervised using separately available end-of-line devices.
- Class-A loudspeaker-loop wiring is supported between each channel’s A and B outputs.
05 / 05 · Per-channel audio processing
DSP for every zone
Each of the eight amplifier channels provides individual digital signal processing.
- Each channel supports equalization, audio delay and limiting for zone-specific tuning.
- Individual sound processing helps tailor speech intelligibility to the connected loudspeaker zone.
- The amplifier is designed for Bosch PRAESENSA public address and voice alarm applications.
PRAESENSA · APPLICATION AREAS
Engineered for real-world environments
Explore how the Bosch PRA-AD608 supports flexible eight-channel audio distribution, supervised loudspeaker connections and dependable voice alarm communication within a configured PRAESENSA system.
Campus application areas
Lecture hallsAcademic buildingsShared spacesCampus areas
Hospitality application areas
LobbiesRestaurantsConference areasGuest corridors
Retail application areas
Retail areasFood courtsAtriumsPublic areas
Infrastructure application areas
Passenger areasIndustrial buildingsOperational areasSafety communication
01 / 04 · APPLICATION
Universities & Campuses
Reliable announcements and voice alarm communication across academic buildings, lecture halls and campus areas.
Relevant applications
- Multi-zone public announcements
- Supervised voice alarm distribution
- Flexible coverage across campus buildings
PRA-AD608 contributionEight individually processed amplifier channels help distribute announcements across separate campus loudspeaker zones, with supervised 70/100 V outputs.
02 / 04 · APPLICATION
Hotels & Hospitality
Flexible audio amplification for background music, guest announcements and voice alarm systems across hospitality facilities.
Relevant applications
- Background music across selected areas
- Guest information and announcements
- Voice alarm coverage across hotel zones
PRA-AD608 contributionFlexible distribution of the shared amplifier power budget across eight channels supports separate hospitality audio zones, with supervised A/B loudspeaker outputs.
03 / 04 · APPLICATION
Shopping Malls & Retail
Adaptable audio distribution for retail zones, promotional announcements and emergency voice messages.
Relevant applications
- Zoned background music
- Promotional and customer announcements
- Public safety voice messaging
PRA-AD608 contributionUp to 600 W maximum output power is shared across eight amplifier channels, with independent digital audio processing for connected retail zones.
04 / 04 · APPLICATION
Transportation & Industrial
Supervised audio amplification for passenger information and safety communications in large transport and industrial facilities.
Relevant applications
- Passenger information announcements
- Multi-area safety messaging
- Scalable, network-based audio distribution
PRA-AD608 contributionOMNEO network connectivity, redundant DC power inputs and integrated spare-channel failover support supervised communication across connected facility areas.
PRAESENSA · APPLICATION AREAS
Engineered for real-world environments
Explore how the Bosch PRA-AD608 supports flexible eight-channel audio distribution, supervised loudspeaker connections and dependable voice alarm communication within a configured PRAESENSA system.
Campus application areas
Lecture hallsAcademic buildingsShared spacesCampus areas
Hospitality application areas
LobbiesRestaurantsConference areasGuest corridors
Retail application areas
Retail areasFood courtsAtriumsPublic areas
Infrastructure application areas
Passenger areasIndustrial buildingsOperational areasSafety communication
01 / 04 · APPLICATION
Universities & Campuses
Reliable announcements and voice alarm communication across academic buildings, lecture halls and campus areas.
Relevant applications
- Multi-zone public announcements
- Supervised voice alarm distribution
- Flexible coverage across campus buildings
PRA-AD608 contributionEight individually processed amplifier channels help distribute announcements across separate campus loudspeaker zones, with supervised 70/100 V outputs.
02 / 04 · APPLICATION
Hotels & Hospitality
Flexible audio amplification for background music, guest announcements and voice alarm systems across hospitality facilities.
Relevant applications
- Background music across selected areas
- Guest information and announcements
- Voice alarm coverage across hotel zones
PRA-AD608 contributionFlexible distribution of the shared amplifier power budget across eight channels supports separate hospitality audio zones, with supervised A/B loudspeaker outputs.
03 / 04 · APPLICATION
Shopping Malls & Retail
Adaptable audio distribution for retail zones, promotional announcements and emergency voice messages.
Relevant applications
- Zoned background music
- Promotional and customer announcements
- Public safety voice messaging
PRA-AD608 contributionUp to 600 W maximum output power is shared across eight amplifier channels, with independent digital audio processing for connected retail zones.
04 / 04 · APPLICATION
Transportation & Industrial
Supervised audio amplification for passenger information and safety communications in large transport and industrial facilities.
Relevant applications
- Passenger information announcements
- Multi-area safety messaging
- Scalable, network-based audio distribution
PRA-AD608 contributionOMNEO network connectivity, redundant DC power inputs and integrated spare-channel failover support supervised communication across connected facility areas.
Key specs
- 8 independent Class-D amplifier channels
- 600 W maximum output power, shared across all 8 channels
- Transformer less, galvanically isolated 70 V / 100 V outputs
- Independent, supervised A/B loudspeaker outputs per channel
- Integrated spare amplifier channel with automatic failover
- Per-channel DSP with equalization, limiting and delay
- Dual OMNEO Ethernet ports with RSTP network redundancy
- Redundant 48 V DC power inputs
- 19-inch rack-mount design, 1U height
Bosch PRA-AD608 – Technical Specifications
Explore the Bosch PRA-AD608, a 600 W, 8-channel PRAESENSA amplifier featuring flexible power distribution, 70/100 V outputs, digital signal processing, redundant power inputs, and automatic spare-channel redundancy.
Specification | Value |
|---|---|
ELECTRICAL & AUDIO SPECIFICATIONS | |
Amplifier Channels | 8 |
Maximum Output Power (All Channels Combined) | 600 W |
Rated / RMS Output Power (All Channels Combined) | 150 W |
Amplifier Architecture | Class D |
Loudspeaker Output Voltage | 70 V / 100 V |
Loudspeaker Outputs | Independent A/B outputs per channel |
Nominal DC Input Voltage | 48 V DC |
Operating Voltage Range | 44–60 V DC |
DC Power Supply Inputs | 2 (A/B, redundant) |
Frequency Response (−3 dB) | 20 Hz–20 kHz |
Minimum Signal-to-Noise Ratio | 107 dBA |
Digital Audio Sample Rate | 48 kHz |
Per-Channel Signal Processing | Equalization, limiting, delay, level control |
Spare Amplifier Channel | 1 integrated, automatic failover |
MECHANICAL SPECIFICATIONS | |
Dimensions (H × W × D) | 44 × 483 × 400 mm |
Rack Height | 1U |
Weight | 8.80 kg |
Protection Rating | IP30 |
Housing Material | Steel; Zamac |
Color | RAL 9017 Traffic Black |
ENVIRONMENTAL SPECIFICATIONS | |
Operating Temperature | −5°C to +50°C |
Storage Temperature | −30°C to +70°C |
Operating Relative Humidity | 5–95% (non-condensing) |
Operating Air Pressure | 560–1070 hPa |
Installation Altitude | −500 to +5000 m |
Fan Noise — Idle | Less than 30 dB SPL at 1 m |
Fan Noise — RMS Power | Less than 53 dB SPL at 1 m |
NETWORK SPECIFICATIONS | |
Network Interface | Ethernet |
Ethernet Ports | 2 |
Ethernet Speed | 100BASE-TX / 1000BASE-T |
Ethernet Protocol | TCP/IP |
Audio & Control Networking | OMNEO |
Control Standard | AES70 |
Network Redundancy | RSTP |
Network Audio Latency | 10 ms |
Audio Encryption | AES-128 |
Network Security | TLS |
SUPERVISION & PROTECTION | |
End-of-Line Supervision | Pilot tone, 25.5 kHz / 3 V RMS |
DC Input Supervision | Undervoltage detection |
Loudspeaker Line Ground Fault Detection | Less than 50 kΩ |
Amplifier Redundancy | Integrated spare channel |
Loudspeaker Line Redundancy | Supervised A/B outputs; Class-A loop support |
Amplifier Channel Load Protection | Short-circuit / overload protection |
Controller Supervision | Watchdog |
Temperature Protection | Overheat protection |
Fan Supervision | Rotation speed monitoring |
Network Supervision | Network link monitoring |
Questions & answers
Know before you buy
Quick answers about the PRA-AD608, and how it compares.
What is the Bosch PRA-AD608 used for?
The Bosch PRA-AD608 is an eight-channel power amplifier designed for PRAESENSA public address and voice alarm systems. It provides network-controlled amplification for loudspeaker zones in commercial buildings and larger facilities.
Does the PRA-AD608 provide 600 W on each channel?
No. The amplifier provides a maximum combined output power of 600 W, which can be distributed flexibly across its eight channels according to the system design and connected loudspeaker loads.
Can the PRA-AD608 operate as a standalone amplifier?
The PRA-AD608 is designed as a component of a Bosch PRAESENSA system. Its normal network audio, control and supervision functions depend on the appropriate PRAESENSA system configuration.
What happens if an amplifier channel fails?
The PRA-AD608 includes an integrated spare amplifier channel for automatic failover. This helps maintain loudspeaker-zone operation if an active amplifier channel develops a fault, subject to the system configuration.
Does the PRA-AD608 support independent loudspeaker zones?
Yes. Its eight amplifier channels support individual digital audio processing, allowing connected loudspeaker zones to be configured with their own audio settings within the PRAESENSA system.
How does the PRA-AD608 connect to a PRAESENSA network?
The amplifier uses OMNEO networking for digital audio and control, with dual Ethernet ports supporting network connectivity and redundancy as part of the configured system.
Where can I buy the Bosch PRA-AD608 in Pakistan?
You can contact ESCO Pakistan to enquire about the Bosch PRA-AD608, product availability, pricing and project requirements. Confirm the exact product number and system compatibility before ordering.