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PRA-AR616

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The Bosch PRA-AR616 combines a single 600 W channel with a relay router for up to 16 zones or 8 A/B outputs, with a spare channel and loudspeaker line supervision by end-of-line device or impedance. Scroll down for details.

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  • Brand - BOSCH
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BOSCH
BOSCH

Global leader in Public Address, Voice Evacuation and Conference Systems.

Bosch PRAESENSA public address and voice alarm system: operator at a reception desk with the PRA-CSLD call station Bosch, Invented for life

IP-connected and fully-featured

PRAESENSA Public Address and Voice Alarm System

PRAESENSA system components

PRA-AR616 PRAESENSA 16-Zone Router Amplifier

Single-channel 600 W amplifier with a relay router for up to 16 zones or 8 A/B outputs, spare channel, and line supervision by end-of-line device or impedance.

  • 16 Zones or 8 A/B Outputs
  • 600 W Shared by Relay Router
  • EN 54-16 ISO 7240-16
PRA-AR616

Bosch PRA-AR616 – 600W 16-Zone Router Amplifier

The PRA-AR616 is a high-power, IP-networked router amplifier delivering 600W of reliable power to up to 16 independent zones. It features an integrated spare channel and relay-based routing for fail-safe redundancy, ensuring continuous operation during critical events.

Key Technical Highlights:

  • Nominal Output: 100V (100 VRMS) or 70V (70 VRMS) modes
  • Max Output Power: 600W (EIAJ) / RMS Power: 150W
  • Zone Support: Up to 16 zones with flexible line supervision (end-of-line devices or impedance monitoring, configurable per zone)
  • Redundancy: Integrated fail-safe design with spare channel
  • Power Input: 48 VDC (tolerance 44–60 VDC)
  • Networking: OMNEO IP for audio and control
  • Low Power Consumption and full supervision capabilities

Ideal for emergency voice alarm systems (EN 50849, BS 5839-8, ISO 7240-16) requiring high reliability, zoning flexibility, and networked control in professional installations.

Key specs

  • 600 W single channel
  • Relay router: 16 zones or 8 A/B outputs
  • Integrated spare channel
  • Line supervision by PRA-EOL or impedance
  • EN 54-16 / ISO 7240-16 certified

Technical Specifications

Amplifier Outputs

Nominal Output Voltage (100V mode)

100 VRMS

Nominal Output Voltage (70V mode)

70 VRMS

Signal Processing

Level control resolution

1 dB

RMS power limiter

RMS power

Input sensitivity (100V output)

0 dBV

Mute attenuation

> 80 dB

Minimum signal-to-noise ratio

> 90 dBA

Acoustic

Full to no load regulation

< 0.4 dB

Frequency response (-3 dB)

20 Hz – 20,000 Hz

Total harmonic distortion + noise

< 0.30%

Intermodulation distortion

< 0.50%

Minimum signal-to-noise ratio (100V mode)

110 dBA

Crosstalk (Main/Supervisory)

< -84 dBA

Electrical (Loudspeaker Load)

Loudspeaker load (max)

600 W

Maximum output power*

600 W

RMS power

150 W

Min load impedance (100V mode)

16.70 Ω

Min load impedance (70V mode)

8.2 Ω

Max cable capacitance

2 nF

DC offset voltage

< 50 mV

**EIAJ test standard, 1 kHz, 8/40 ms*

Electrical (Power Transfer)

Input voltage (nominal)

48 VDC

Input voltage (tolerance)

44 VDC – 60 VDC
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