AMP-2-125
DSP Matrix Amplifier: 2-Channel 125W 8ohm // 1-Channel 250W 70/100V
AMP-2-125
Distributed Audio, Custom Audio Distribution
The RTI Commercial Amplifier Series delivers configurable, consistent, and reliable high-performance audio amplification for commercial, residential, and entertainment applications. Built around UMAC™ Class D output circuitry and a UREC™ universal switch-mode power supply with power factor correction, every model in the series operates equally well driving conventional low-impedance (Lo-Z, 4Ω/8Ω) loudspeakers and high-impedance (Hi-Z, 70V/100V) transformer-coupled distributed audio systems with no external transformer required.
For setup, configuration is handled entirely through a browser-based interface accessible over wired Ethernet or built-in Wi-Fi, with no dedicated software required. Installers have granular control over inputs, output zones, per-channel EQ, FIR speaker presets, signal routing, and GPIO-based external control from any networked device. Dante/AES67 support with network audio transport, enabling seamless integration into professional IP audio ecosystems.
4 analog inputs, 1 digital input / 2 outputs
Four analog audio inputs (balanced or unbalanced) and one digital input. Outputs configurable as two Lo-Z or one Hi-Z.
2 Zones
Choose between a standard stereo zone or a 70V/100V sound system.
UMAC™ Class D Amplification
Delivers ultra-low distortion, full-bandwidth <0.05% THD+N and >106dB SNR. Professional audio quality at commercial scale, with high efficiency that reduces heat load and operating cost.
PowerShare Technology
Unused headroom from idle channels is redistributed to active channels in real time, maximizing amplifier utilization without upsizing the unit or adding hardware.
Browser-Based Control Web App
Installers configure inputs, zones, EQ, speaker presets, and GPIO via any web browser over Ethernet or Wi-Fi, no proprietary software, no dedicated laptop, no return trips.
Dual-Mode Lo-Z and Hi-Z Output
One unit drives both 4Ω/8Ω speakers and 70V/100V distributed systems, eliminating the need for external transformers or separate product SKUs across mixed-topology projects. 125W per channel Lo-Z (4Ω/8Ω) and Hi-Z (70V/100V) - no external transformer required.
Per-Output Speaker Presets
FIR, parametric EQ, crossover, delay, limiter, polarity. Eliminates external speaker processors for most installs. Presets can be locked, exported, and shared across projects, reducing commissioning time and ensuring consistent tuning.
GPIO Interface
Physical volume, standby, mute, and 12V trigger. Enables wall-volume controls and building-automation integration without a full control system, expanding deployment options for budget-conscious commercial installations.
Power |
|
| Total System Power | 250 W |
| Output Power — Lo-Z (4Ω/8Ω) | 2 x 125 W (4Ω / 8Ω) |
| Output Power — Hi-Z (70V/100V) | 1 x 250 W (70V / 100V*) |
| PowerShare (up to) | 1 x 250 W (across all channels) |
| Power Consumption (full load) | 75 W |
| Power Ratings | 1% THD @ 120 Vac and 230 Vac |
| Power Supply | UREC™ universal switch-mode PSU with PFC and standby converter |
| Operating Voltage / Frequency | Universal Mains — 100–240 VAC ~ 50/60 Hz |
| Standby Consumption | < 0.6 W |
Audio |
|
| Amplifier Class / Output Circuitry | UMAC™ Class D — full bandwidth PWM modulator with ultra-low distortion |
| Output Voltage | 70Vp / 140Vpp unloaded | Bridged: 140Vp / 280Vpp unloaded |
| 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 / −0.8 dB, 8Ω load, 3 dB below rated power) |
| Protection Circuits | Short Circuit, DC, Undervoltage, Temperature, Overload |
Ports |
|
| Analog Input | 4x RCA (Unbalanced Stereo) 2x 6-pin Phoenix Connectors (Balanced Stereo) |
| Digital Input | 1x Coax |
| Digital Output | 1x Coax |
| Analog Output | 1x 4-pin Phoenix Connector |
Control |
|
| IP | 1x RJ45 |
| GPIO | 1x 8-pin Phoenix Connector |
Physical / Dimensions |
|
| Dimensions (H × W × D) | mm: 44 x 220 x 213 |
| Weight | 2.0 kg |
| Rack Format | ½ Rack, 1U |
| Operating Temperature | 0 – 40 °C |
| Product Warranty | 3 Years |
* 100V line mode is rated at –1 dB (≈ 90 V) |
|
| Specifications subject to change without notice. Mass & dimensions are approximate | |
Data Sheet |
Manual |
Power |
|
| Total System Power | 250 W |
| Output Power — Lo-Z (4Ω/8Ω) | 2 x 125 W (4Ω / 8Ω) |
| Output Power — Hi-Z (70V/100V) | 1 x 250 W (70V / 100V*) |
| PowerShare (up to) | 1 x 250 W (across all channels) |
| Power Consumption (full load) | 75 W |
| Power Ratings | 1% THD @ 120 Vac and 230 Vac |
| Power Supply | UREC™ universal switch-mode PSU with PFC and standby converter |
| Operating Voltage / Frequency | Universal Mains — 100–240 VAC ~ 50/60 Hz |
| Standby Consumption | < 0.6 W |
Audio |
|
| Amplifier Class / Output Circuitry | UMAC™ Class D — full bandwidth PWM modulator with ultra-low distortion |
| Output Voltage | 70Vp / 140Vpp unloaded | Bridged: 140Vp / 280Vpp unloaded |
| 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 / −0.8 dB, 8Ω load, 3 dB below rated power) |
| Protection Circuits | Short Circuit, DC, Undervoltage, Temperature, Overload |
Ports |
|
| Analog Input | 4x RCA (Unbalanced Stereo) 2x 6-pin Phoenix Connectors (Balanced Stereo) |
| Digital Input | 1x Coax |
| Digital Output | 1x Coax |
| Analog Output | 1x 4-pin Phoenix Connector |
Control |
|
| IP | 1x RJ45 |
| GPIO | 1x 8-pin Phoenix Connector |
Physical / Dimensions |
|
| Dimensions (H × W × D) | mm: 44 x 220 x 213 |
| Weight | 2.0 kg |
| Rack Format | ½ Rack, 1U |
| Operating Temperature | 0 – 40 °C |
| Product Warranty | 3 Years |
* 100V line mode is rated at –1 dB (≈ 90 V) |
|
| Specifications subject to change without notice. Mass & dimensions are approximate | |
