Can't find what you're after? Use the Support link on the bottom right or give our expert team a call on (03) 9321 8300
Search our range of quality products...
Can't find what you're after? Live Chat or give our expert team a call on 1800 337 366
  • AMP4125 4 CH HI / LOW Z DSP MATRIX AMPLIFIER 4 CH 125W 8?, 2 CH 70/100V 250W

AMP4125 4 CH HI / LOW Z DSP MATRIX AMPLIFIER

4 CH 125W 8?, 2 CH 70/100V 250W

Code: 01452025

EACH
Call for Availability!
$1999 inc GST
Increase value Decrease value
Qty Each (inc GST) Each
Request Price Match
Enter 4 digit postcode

RTI AMP4125 - 4ch DSP Matrix amplifier- 4x 125w at 8 ohm - 2x 250w at 70/100v

The AMP-4-125 power amplifier delivers configurable and reliable high-performance audio power amplification for commercial and hospitality applications requiring a mix of low-impedance and high-impedance outputs. Featuring a compact 1U half-rack design, this DSP-enabled Class-D amplifier supports low-impedance 4Ω to 16Ω loudspeakers and high-impedance 70V/100V transformer-coupled loudspeakers. The AMP-4-125 accepts four analog inputs and one stereo S/PDIF digital input, delivering four low impedance mono channels (or two low impedance stereo zones) at 125W per channel, or two 70V/100V mono channels at 250W per channel.

For setup, the RTI web GUI offers effortless browser-based configuration of the installed system. DSP configuration options include multi-zone setup, input mixing, priority and ducking, restrictions, input and output EQ, S/PDIF output routing, high-pass filtering, speaker presets, delay, Wall-S1 controller configuration, sine wave generation, and more.

Key Features:

  • Four analog audio source input channels (balanced or unbalanced) and one digital input (S/PDIF).
  • Two Lo-Z stereo or four Lo-Z mono output zones, two Hi-Z mono output zones, or a mix of them.
  • A Class D amplifier provides a robust and clear audio experience with 125 Watts @ 4Ω/8Ω per channel or 250 Watts @ 70V/100V per channel.
  • Daisy-chain multiple amplifiers to expand the number of zones by distributing up to two audio inputs or zones.
  • Built-in DSP allows fine-tuning of acoustic characteristics for each zone.
  • Easy configuration via LAN or Wi-Fi.
  • Offers IP and GPIO control options.
  • Free-standing installation or rack-mount (rack-mount kit included)

Extra Details

  • 2 Sources / 4 Channels
    • Two analog audio source inputs (balanced or unbalanced) and one digital input.
  • 2 Zones
    • Choose between standard stereo zones or a 70V/100V sound system.
  • Full Matrix
    • Distribute two audio source inputs to two zones, with the ability to expand to additional zones by daisy-chaining multiple AMP-4-125 units.
  • Powerful Stereo Output
    • Delivers 125W power output per channel for stereo zones.
  • Powerful 70V/100V Output
    • Provides 250W per channel for 70V/100V zones.
  • Built-In DSP
    • Easily configure and optimize DSP and matrix settings through the intuitive web user interface.
  • Ultra-Efficient
    • Cool Power® Class D amplifier technology ensures efficient heat dissipation and low power consumption.
  • Audio Source Versatility
    • Supports a combination of analog and digital audio sources for flexibility.
  • Control
    • Seamlessly integrate with RTI or third-party control systems via IP, or use GPIO control for volume, standby, mute, or trigger functions.
  • Mounting Options
    • Supports free-standing installation with included rack ears and adhesive rubber feet. Rack-mount kit sold separately.

Specifications:

Analog Sources 4 RCA (Unbalanced Stereo)
4 Phoenix Connector (Balanced Stereo)
Digital Sources 1 Coax
Amplified Zones 2 (4 Channels)
Audio Zone Expansion Daisy-chain multiple AD-4-125 units via Digital In/Out
Amplifier Class D
Output Power @ 4Ω/8Ω 4 x 125W
Output Power @ 70V/100V 2 x 250W
Output Voltage 45 Vrms (S.E), 70/100V (Hi-Z)
Power Share Up to 2 x 250W (across each channel pair)
Signal to Noise Ratio > 106 dB (A-weighted, 20 Hz – 20 kHz, 8Ω load)
THD-N (Typical) < 0.05% (20 Hz – 20 kHz, 8Ω load, 3 dB below rated power)
Frequency Response 20 Hz – 20 kHz ( /- 0.5 dB, 8Ω load, 3 dB below rated power)
Protection Circuits Short circuit, DC, Undervoltage, Temperature, and Overload protection
RTI or 3rd Party Control IP (RJ45), GPIO (Phoenix Connector)
Power Supply UREC™ universal mains switch mode power supply with Power Factor Correction (PFC) and standby converter
AC Input Voltage 100-240V~, 50/60Hz, 150W
Power Rating 1% THD @ 120VAC and 230VAC
Standby Consumption < 0.5W
Mounting Rack mount or free-standing
Dimensions (W x D x H) 12.6” x 8.66” x 1.75”
320 mm x 220 mm x 44.5 mm
Rack Units 1U
Weight 6.2 lb (2.8 kg)
Operating Temperature 32°F to 104°F (0°C to 40°C)

In the box:

  • AMP-4-125, power cord
  • 6-pin Phoenix input connectors (2)
  • 4-pin Phoenix output connectors (2)
  • 8-pin Phoenix GPIO socket connector (1)
  • adhesive rubber feet (4)


We’re here to help... Our friendly staff are here with technical advice to help you find the right solution for your needs.
The Radio Parts team of industry experts have extensive knowledge in everything electronic.

Be the first to hear about it!