XPA U 3502 – Two Channel Audio Power Amplifier
Two Channel Audio Power Amplifier – 350 Watts Per Channel
Key Features
- 350 watts rms output power per channel
- 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
- Two channels in a 1U, half rack width enclosure – rack mount hardware included
| Feature | Specification and Description |
|---|---|
| Channels & Power | 2 × 350 W RMS into 4 Ω/8 Ω |
| Efficiency | ENERGY STAR qualified; Auto‑standby; InstaWake™ <100 ms |
| Cooling & Form Factor | Fanless convection, 1U half‑rack width; stackable without gaps |
| Audio Performance | THD 0.1 %, S/N 100 dB, damping >100 |
| Input & Control | Balanced/unbalanced analog; DC volume control; standby contacts |
| Power Specs | 100–240 VAC; idle ~7.8 W; standby <1 W |
| Dimensions / Weight | 43 × 220 × 267 mm; 1.9 kg |
| Safety & Certification | UL 2043 plenum, CE, RoHS, FM, etc.; 3‑year warranty |
The Extron XPA U 3502 is a high‑performance, ENERGY STAR®‑qualified stereo power amplifier housed in a 1U half‑rack, fanless (convection‑cooled) enclosure. It delivers 350 watts RMS per channel into 8 Ω or 4 Ω loads, optimized for professional audio installations where rack space and heat output are critical concerns.
The XPA U 3502 uses advanced Class D amplifier design with power factor correction, ultra‑low inrush current, and patented CDRS™ (Class D Ripple Suppression) for clean, efficient power delivery. Its auto‑standby feature conserves energy by entering standby after ~25 minutes of inactivity, drawing <1 W, yet InstaWake™ reactivates full power in under 100 ms when signal resumes.
Engineered entirely in‑house, the amplifier ensures reliability, thermal efficiency (runs up to 28 % cooler with 49 % less wasted power), and rack‑stackable design with no ventilation gaps needed between units.
Certified for UL 2043 plenum installation (with optional conduit adapter kit), it’s ideal for concealed mounting above drop ceilings.