Description
Viking Electronics 250 Watt 70V SIP/Multicast Paging Amplifier (PA-250-IP)
Tired of weak or spotty paging that leaves important announcements unheard? The Viking PA-250-IP changes that. This compact 1U rack-mount SIP/Multicast paging amplifier pumps out up to 250 watts of crystal-clear audio through a 70V distributed system — perfect for schools, hospitals, retail stores, warehouses, and busy office buildings.
Just plug it into your network with a single CAT5/6 cable, register it as a SIP endpoint or join a multicast group, and you’re ready to deliver loud, reliable pages from any VoIP phone system (hardware or cloud-based). It even supports background music, auxiliary inputs, and programmable night ringing so after-hours calls get noticed without disturbing the whole building during the day.
Built with modern high-efficiency amplifier technology, the PA-250-IP runs cooler, takes up less space, and costs less to operate than older designs — while still giving you more power for your money.
The Telecom Spot Expert Review
The PA-250-IP stands out as one of the smartest choices for mid-to-large facilities that need serious volume without complexity.
What we love most is how easy it is to integrate with today’s SIP-based phone systems while still supporting multicast from popular platforms like Polycom. The 70V output is a game-changer — you can run longer wire distances with smaller gauge cable, connect way more speakers on a single run, and let every speaker have its own volume tap so quiet areas stay quiet and noisy zones stay loud.
If you’re moving from an old analog paging system, this unit makes the transition smooth and future-proof. Overall, it’s reliable, cost-effective, and packed with practical features that real customers actually use every day.
Viking 250 Watt 70V SIP Paging Amp Features
- SIP compliant
- SIP endpoint or multicast group member
- SIP/Multicast: SIP page, SIP page and zoned multicast receive
- Plays audio from standard multicast sources
- Compatible with Polycom multicast paging
- Red “Page/Status” LED indicator
- Network downloadable firmware
- Support for access code to prevent unwanted SIP calls
- Network remote volume control
- Paging prioritization
- Programmable pre-page alert tone
- Powerful 70V amplifier drives up to 250 Watt load
- Door chime trigger input
- Auxiliary and background music inputs
- Individual and master volume controls
- Bass and treble controls
- LEDs show audio level and activity
- Provides loud ringing
- 600 Ohm output to drive additional amplifiers
- Adjustable Automatic Level Control
- Peak limiter and multiple protection modes
- Power: 100V to 240V AC, 50 to 60Hz
- Dimensions: approx. 19” x 1.75” x 6” (483mm x 44.5mm x 153mm)
- Shipping Weight: lbs ( kg)
- Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-condensing humidity
- SIP Audio Codecs: G711u, G722 and G711a
- Multicast Audio Codecs: G711u and G722
- Network Compliance: IEEE 802.3 af PoE, SIP 2.0 RFC3261, 100BASE-TX with auto cross over
- Regulatory Compliance: CE, FCC Part 15 and Canada ICES-003 Class A
- Frequency Response: 55 – 18,000 Hz (+/- 10 dB)
- Connections: (1) RJ45 10/100 Base-T, (1) 3.5mm, (2) IEC C8 AC power inlets, (11) removable cage clamp screw terminals
- Power Cord: Dual IEC C7 plugs “Y” power cord included


