Viking Electronics PA-250-IP 250W 70V SIP/Multicast Paging Amplifier

The Viking Electronics PA-250-IP is a 250-watt, 70V SIP/Multicast paging amplifier built for commercial facilities that need loud, reliable IP-driven overhead paging without the complexity of a separate paging controller. Running on standard 100–240V AC — no PoE switch port required — the PA-250-IP fits into a 1U rack slot and integrates directly with SIP-based VoIP phone systems or any multicast-capable UC platform. If you're specifying Viking Electronics paging equipment for a new installation or replacing an analog paging head-end, this amplifier is the logical anchor for the audio distribution layer.

Key Features

• 250 Watts into 70V, 150 Watts into 25V: The 70V output supports up to 250 individual ceiling or wall speakers on a single home-run — enough to cover a large warehouse, school campus wing, or multi-floor office without adding a second amplifier. Drop to 25V and the safe limit steps down to 150 speakers, still more than sufficient for mid-size deployments.
• SIP 2.0 (RFC 3261) endpoint integration: The PA-250-IP registers as a standard SIP endpoint on your call manager (Cisco CUCM, Avaya, FreePBX, 3CX, or any RFC 3261-compliant platform). Pages initiated from any SIP phone or auto-dialer ring through as a regular SIP call — no proprietary gateway hardware required. This makes integration into an existing IP phone system straightforward.
• Multicast paging (G.711u / G.722): For simultaneous all-call or zone paging without consuming SIP registrations, the PA-250-IP supports IP multicast. Assign a multicast address and port, and any compliant endpoint or paging controller can trigger a zone blast to all subscribed amplifiers at once. This is the right architecture for large campuses running parallel paging zones.
• G.722 wideband audio (50–18,000 Hz ±10 dB): Unlike G.711-only amplifiers limited to 300–3,400 Hz telephone-band audio, G.722 opens the frequency response to 18 kHz — speech intelligibility and music on hold both improve noticeably through ceiling speakers. Facilities using overhead paging for both safety announcements and background audio will hear the difference.
• Universal AC input (100–240V, 50–60 Hz): The wide-range power supply means the same unit ships internationally and covers both 120V North American and 230V European rack environments. No step-down transformer needed. Each IEC C8 AC connection point is a cage-clamp terminal, so wiring to a rack PDU is direct and secure.
• 1U rack chassis (19