XPA U 358

Eight Channel Low and High Impedance Amplifiers
35 Watts Per Channel
Key Features
  • 35 watts rms output power per channel at 8 ohms, 4 ohms, or 70/100V
  • ENERGY STAR® qualified amplifier
  • Extron Patented CDRS™ - Class D Ripple Suppression
  • Convection cooled, fanless operation - can be stacked without extra rack space for ventilation
  • Eight channels in a 1U, half rack width enclosure - rack mount hardware included
  • Defeatable auto-standby with fast wake up
The Extron XPA U 358
Model Version Description Part #
 XPA U 358 Eight Channel Amp, 35 watts at 8 or 4 ohms 60-1759-01
 XPA U 358-70V Eight Channel Amp, 35 watts at 70 volts 60-1759-02
 XPA U 358-100V Eight Channel Amp, 35 watts at 100 volts 60-1759-12

The Extron XPA U 358 is an ENERGY STAR qualified audio power amplifier delivering eight 35 watt channels in a half rack, 1U, convection cooled, plenum rated enclosure that includes rack mount hardware. The XPA U 358 delivers 35 watts into 8 or 4 ohms while the XPA U 358-70V delivers 35 watts into 70 volt systems and the XPA U 358-100V delivers 35 watts into 100 volt systems. The XPA U 358 offers unprecedented channel density and ability to install units without using rack spaces for ventilation, conserving precious rack space. It features a highly efficient advanced Class D amplifier design with power factor correction, ultra low inrush current, defeatable auto‑standby with fast wake up, and our patented CDRS – Class D Ripple Suppression.

High Channel Density

The XPA U 358 is the industry's first eight channel, half rack amplifier. Since it doesn't require empty rack spaces for cooling or external transformers, the XPA U 358 can deliver up to eight times the channels in two rack spaces compared to competitive amplifiers. This is made possible by Extron's advanced thermal engineering, which includes fanless convection cooling, no chassis heatsinks, and Everlast power supplies. The cumulative effect of hundreds of precise design choices enables many XPA U 358 units to be placed in an equipment rack without the need to waste rack space for ventilation above the amplifiers.

XPA U 358 stacked
XPA Ultra amplifiers stacked four high without ventilation space.

Designed by Extron

Every circuit in an XPA® Ultra power amplifier is designed by our team of dedicated power amplifier engineers, ensuring that every Extron amplifier meets our high standards of excellence. By designing everything in-house, Extron engineers can meticulously optimize every detail for maximum performance, reliability, power efficiency, and reduced heat.

High Efficiency

With tested and measured efficiency benchmarks up to 77%, the XPA Ultra uses less electricity to generate the same amount of power. This has the direct benefit of lower electricity costs and less power infrastructure required.

Cool Operation

An XPA Ultra amplifier runs up to 28% cooler, with up to 49% less power wasted as heat, and up to 59% less radiated heat compared to competitive amplifiers. Electronics that run cooler, last longer and don’t transfer heat to other gear sharing the same rack. The low radiated heat of the XPA Ultra amplifiers, enabled by our advanced thermal engineering, saves on cooling costs and allows more channels of amplification to be put into fewer rack spaces.

Fast Wake from Standby

The XPA U 358 meets ENERGY STAR qualification requirements with an auto power-down feature that places the amplifier into standby after 25 minutes of inactivity. When in standby, the XPA U 358 draws less than one watt of power. It quickly comes out of standby upon detection of signal in under 100 milliseconds, fast enough that the beginning of audio is not cut off. When coming out of standby, the XPA U 358 draws minimal inrush current, creating no sudden demand on power systems. For applications where the amplifier is required to remain active at all times, the XPA Ultra provides the ability to defeat auto-standby while maintaining ENERGY STAR status.

Rock-Solid Reliability

Product reliability is a high priority at Extron and we go to great lengths to engineer products with industry-leading low failure rates, driven by rigorous testing of everything we ship. From the elimination of short-lived electrolytic capacitors in the signal path, to PCB designs that exclude the use of failure-prone wire harnesses, to accelerated burn-in testing, the XPA U 358 is engineered by Extron for many years of service.