- Compact 1U Half Rack Design
- Full Matrix 2 Sources / 4 Channels
- 8Ω 125 Watt Class-D amplifier
- 70V/100V 250 Watts
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.
- 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).
| 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) |
| Warranty | Three Years (Parts & Labor) |
| Prop 65 Declaration | This product contains Butadiene which is listed on California’s Safe Drinking Water & Toxic Enforcement Act of 1986. This Act, commonly known as Proposition 65 (Prop 65), establishes a list of chemicals which the state of California’s risk assessment process has determined to present a risk of cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov |