XPA U 1004 – Four Channel Low and High Impedance Amplifiers
Four Channel Low and High Impedance Amplifiers
100 Watts Per Channel
Key Features
- 100 watts rms output power per channel at 8 ohms, 4 ohms, or 70/100V
- ENERGY STAR® qualified amplifier
- Auto standby saves energy
- InstaWake™ exits auto-standby mode in under 100 milliseconds
- Convection cooled, fanless operation – can be stacked without extra rack space for ventilation
- Four channels in a 1U, half rack width enclosure – single and dual rack mount hardware included
| Feature | XPA U 1004 / 70 V / 100 V |
|---|---|
| Output Power | 4 × 100 W RMS per channel at 4 Ω, 8 Ω, or 70/100 V |
| Bridged Mode (SB variant) | 2 × 200 W outputs using bridged channel pairs |
| Frequency Response | 20–20,000 Hz ±1 dB |
| THD + Noise | ≤ 0.1 % at 1 kHz, 3 dB below clipping |
| Signal‑to‑Noise Ratio | ~100 dB (unweighted) |
| Damping Factor | >100 (8 Ω); >100@50 Ω (70 V); >100@100 Ω (100 V) |
| High-Pass Filter | 80 Hz, 12 dB/oct selectable (70/100‑V models only) |
| Control Port | 3.5 mm captive screw; contact closure for standby/mute; high-pass disable (70/100V) |
| Idle / Standby Power | ~7.2–7.3 W idle; < 1 W standby (< 0.6 W) |
| Power at 1/8 Load | ~64–69 W (varies by voltage and load) |
| Cooling / Enclosure | Fanless convection; UL 2043 plenum rated with kit |
| Certifications | ENERGY STAR®, UL, CE, RoHS, FCC Class B, UL 2043 |
The Extron XPA U 1004 is a high-density, four-channel Class D amplifier that delivers 100 W RMS per channel into 4 Ω, 8 Ω or high‑impedance (70 V / 100 V) speaker systems. Housed in a compact half-rack, 1U convection-cooled, plenum-rated enclosure, it's designed for high-efficiency installations where rack space and ventilation are limited. It features Extron’s patented CDRS™ (Class D Ripple Suppression) for improved audio fidelity and low radio-frequency emissions, along with ultra-low inrush current, defeatable auto-standby, InstaWake™ (< 100 ms), and power factor correctionThe XPA U 1004‑SB variant offers switchable bridged outputs, allowing you to combine two channels into a single 200 W output, usable in either low or high impedance modes—ideal for extra power flexibility