XPA U 1004 SB New

Four Channel Bridgeable Output Amplifier
100/200 Watts Per Channel
Key Features
  • New Four channels with selectable output modes
    • Available configurations per channel pair:
      • Two 100 watt channels into 8 ohms or 4 ohms
      • One 200 watt bridged channel into 70V or 100V
      • One 200 watt bridged channel into 8 ohms or 16 ohms
  • ENERGY STAR® qualified amplifier
  • Extron Patented CDRS™ - Class D Ripple Suppression
  • Convection cooled, fanless operation - can be stacked without extra rack space for ventilation
  • Defeatable auto-standby with fast wake up
  • UL 2043 plenum rated when used with optional Flexible Conduit Adapter Kit
The Extron XPA U 1004 SB
Model Version Description Part #
XPA U 1004 SB Four Channel Bridgeable Output Amp, 100/200 Watts 60-1301-01

The Extron XPA U 1004 SB is an ENERGY STAR qualified four channel audio power amplifier with flexible channel pairs that can drive 8 ohm, 4 ohm, 70 volt, or 100 volt loads. The individually bridgeable pairs can deliver two 100 watt channels into low impedance systems or one 200 watt channel into low or high impedance systems. A rotary switch on the rear panel makes it quick and easy to select output mode. The convection cooled, plenum rated enclosure of the XPA U 1004 SB does not require empty rack spaces for ventilation and includes rack mount hardware. It features a highly efficient advanced Class D amplifier design with defeatable auto standby, fast wake up from standby, and our patented CDRS – Class D Ripple Suppression. XPA Ultra SB models also offer remote volume and mute control with Extron VCM, VC or select MediaLink controllers.

Switchable Bridging

Selectable output modes provide the flexibility to make an XPA U 1004 SB the go-to solution for nearly any application requiring 100 watts to 200 watts per channel. This single power amplifier can handle the requirements of a diverse set of system configurations:

  • Four 8/4 ohm 100 watt channels driving stereo program playback in two seprate rooms
  • Two 8/4 ohm 100 watt channels driving stereo program playback while a single bridged 200 watt high impedance channel provides power to 70V/100V ceiling speakers for conferencing
  • Two bridged 8 ohm 200 watt channels driving high SPL stereo program playback
  • Two bridged 70V/100V 200 watt channels driving two large zones of ceiling speakers

High Channel Density

The XPA U 1004 SB doesn't require empty rack spaces for cooling or external transformers, allowing it to deliver more channels per rack space 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 1004 SB units to be placed in an equipment rack without the need to waste rack space for ventilation above the amplifiers.

XPA U 1004 SB 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%, an XPA Ultra amplifier 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 1004 SB 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 1004 SB 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 1004 SB 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 1004 SB is engineered by Extron for many years of service.


  Flexible Conduit Adapter Kit Installation Kit for Hard Wired Electrical Environments
  VC 50 Volume Control Wallplate
  VCM 110 AAP Volume and Mute Controller - AAP Version
  VCM 200 D Volume and Mute Controller - Decorator-Style Wallplate
  VCM 200 EU Volume and Mute Controller - EU Wall Frame for Flex55 and EU Enclosures
  MLC Plus 84 D MediaLink Plus Controller - Decorator-Style Wallplate
  MLC Plus 100 MediaLink Plus Controller
  MLC Plus 200 MediaLink Plus Controller
  MLA VC10 Plus Volume Control Module
  RSU 129 Universal Rack Shelf Kit for 9.5" Deep Products
  RSB 129 Basic Rack Shelf for 9.5" Deep Products
  UTS 100 Series Under Table Shelf System
  SPK 14 14 AWG Speaker Cable
  SPK 16 16 AWG Speaker Cable
  SPK 18 18 AWG Speaker Cable
  SF 26CT SoundField XD 6.5" Two-Way Ceiling Speaker with 8" Composite Back Can and 70/100 V Transformer
  SF 26CT LP SoundField XD 6.5" Two-Way Ceiling Speaker with Low Profile Back Can
  SF 3CT LP SoundField XD 3" Full-Range Ceiling Speakers with 4" Low Profile Composite Back Can and 70/100 V Transformer
  SF 3PT SoundField 3" Full-Range Pendant Speaker
  SF 26PT SoundField 6.5" Two-Way Pendant Speaker
  FF 120T Full-Range Flat Field Speakers with 1' x 2' Low Profile Enclosure and 70/100 V Transformer
  FF 220T Full-Range Flat Field Speakers with Low Profile Enclosure and 70/100 V Transformer
  CS 123T Full-Range 70/100 V SpeedMount Ceiling Speaker System
  CS 3T Full-Range Open Back Ceiling Speakers with 70/100 V Transformer
  CS 1226T Plus Two-Way 70/100 V SpeedMount Ceiling Speaker System
  CS 26T Plus Two-Way Open Back Ceiling Speakers with 70/100 V Transformer
  SF 228T Two-Way SoundField Ceiling Tile Speakers with 8" Woofer and 70/100 V Transformer
  SM 26 SpeedMount Two-Way Surface Mount Speakers with 6.5" Woofer
  SM 28 SpeedMount Two-Way Surface Mount Speakers with 8" Woofer
  NetPA U 1004 Four Channel Power Amplifiers with Dante and DSP
100 Watts Per Channel
  NetPA U 1002 Two Channel Power Amplifiers with Dante and DSP
100 Watts Per Channel
  NetPA U 2002 SB Two Channel Bridgeable Output Amplifier with Dante and DSP
200/400 Watts Per Channel
  NetPA U 8001 SUB Mono Subwoofer Amplifier with Dante and DSP
800 watts
  XPA 2001 Mono 70/100 V Amplifier - 200 Watts
  XPA 2002 Two Channel Amplifier - 200 Watts Per Channel
  XPA 2003C Three Channel Combo Amplifier - 200 Watts Per Channel
  XPA 2004 Four Channel Amplifier - 200 Watts Per Channel
  XPA 4002 Two Channel Amplifier - 400 Watts Per Channel
  MPA 152 Plus Stereo Amplifier - 15 Watts Per Channel
  MPA 601 Mono 70/100 V Amplifier - 60 Watts


XPA U 1004 SB
   Voltage gain 
      Stereo mode (8 ohm) 23x (27 dB)
      Stereo mode (4 ohm) 16x (24 dB)
      Bridged mono mode (16 ohm) 46x (33 dB)
      Bridged mono mode (8 ohm) 33x (30 dB)
      Bridged mono mode (70V) 57x (35 dB)
      Bridged mono mode (100V) 81x (38 dB)
   CMRR 75 dB @ 1 kHz (typical)
Audio input
   Number/signal type 4 balanced/unbalanced
   Connectors (2) 5-pin 3.5mm captive connector
   Impedance >10kΩ ohms unbalanced/balanced, DC coupled
   Nominal level +4 dBu balanced
   Maximum level +20 dBU balanced
   Input sensitivity +4 dBu (1.23 Vrms)
   Input signal detection threshold -65 dBU +/-3 dB, balanced
Audio output
   Output Number/Signal Type 4 channel, 8 ohms or 4 ohms; or 2 bridged mono, 8 ohms, 16 ohms, 70V or 100V
   Connectors (2) 4 pole 5mm screw lock captive screw connectors
   Load impedance 
      Stereo mode (8 ohm) 8 ohms minimum
      Stereo mode (4 ohm) 4 ohms minimum
      Bridged mono mode (16 ohm) 16 ohms minimum
      Bridged mono mode (8 ohm) 8 ohms minimum
      Bridged mono mode (70V) 25 ohms minimum
      Bridged mono mode (100V) 50 ohms minimum
   Amplifier type Class D
   Output power 
      Stereo mode 100 Watts per channel, 4 or 8 ohms, 1 kHz, 0.1% THD
      Bridged mono modes 
         Low impedance 200 watts per channel, 8 ohms or 16 ohms, 1 kHz, 0.1% THD
         High impedance 200 watts per channel, 70V or 100V, 1 kHz, 0.1% THD
   Frequency response 20 Hz to 20 kHz, +/- 1 dB, 8 ohms/ 70V / 100V
   THD + Noise 0.1% @ 1 kHz at 3 dB below clipping
   S/N 100 dB, 20 Hz - 20 kHz, unweighted
   Damping factor >100 @ 8 ohms
   High pass filter 
      Bridged mono mode (70V or 100V) 80 Hz, 12 dB per octave rolloff (switch selectable)
    NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
   Control port (1) 3.5mm captive screw connector, 5-pole
(1) 3.5mm captive screw connector, 3-pole
   Pin configuration 
      DC volume control (analog) Pin 1 = +10 VDC, 50 mA (max.), Pin 2 = volume/mute (variable voltage), Pin 3 = GND
      Standby power control (contact closure) Pin 4 = GND, Pin 5 = Standby
   Power 100 VAC to 240 VAC, 50-60 Hz, internal
   Power consumption and thermal dissipation 
XPA U 1004 SB 115 VAC, 60Hz 230 VAC, 50Hz
AC Line
AC Power
AC Line
AC Power
Condition A W W BTU/hr A W W BTU/hr
Active (1/8 power), all
channels driven
Stereo 8Ω 0.6 66.7 16.7 57 0.4 65.4 15.4 53
Stereo 4Ω 0.7 71.6 21.6 74 0.4 70.3 20.3 69
Bridged 8Ω 0.7 69.5 19.5 67 0.4 67.8 17.8 61
Bridged  16Ω 0.6 65.3 15.3 52 0.4 64.3 14.3 49
 Bridged   70V 0.6 64.7 14.7 50 0.4 63.6 13.6 46
 Bridged   100V 0.6 63.3 13.3 45 0.4 62.2 12.2 42
Quiescent (idle) 0.1 9.2 9.2 31 0.1 9.0 9.0 31
Standby <0.1 <1 <1 <3 <0.1 <1 <1 <3


      Storage −40 to +158 °F (−40 to +70 °C) / 10% to 90%, non-condensing
      Operating +32 to +122 °F (0 to +50 °C) / 10% to 90%, non-condensing
      Cooling Convection, no vents
   Protection Clip limiting, thermal, short circuit, DC output
   Indication Limiter/Protect LED indicates the onset of clip limiting, thermal cycling, or a short circuit.
Power LED indicates DC output protection
   Rack mount Yes with included brackets and optional rack shelf
   Enclosure Metal (Aluminum)
   Enclosure dimensions (1U high, half rack wide)
1.7" H x 8.7" W x 10.5" D
43mm H x 220mm W x 267 mm D
   Product weight 4.2 lbs (1.9 kg)
   Vibration ISTA 1A in carton (International Safe Transmit Association)
   Regulatory compliance 
      Safety CE, C-tick, CUL, UL
UL rated for use in plenum airspaces: meets UL 2043 for heat and smoke release; meets UL 60065 and IEC 60065 for AV Equipment
      EMI/EMC CE, C-tick, FCC Class B, ICES, VCCI Class B, CISPRR 22 Class B
      Environmental Compliance ENERGY STAR® qualified amplifier, CEC, European Code of Conduct, RoHS
   Warranty 3 years parts and labor
   Everlast power supply warranty 7 years parts and labor
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    60-1301-01 4.5" (11.4 cm) 14.25" (36.2 cm) 13.25" (33.7 cm) 6.0 lbs (2.72 kg)


Panel Drawing

Panel Drawing
© 2020 Extron. Specifications are subject to change without notice.