MPA 152 Plus

Stereo Amplifier - 15 Watts Per Channel

Key Features

30 watts rms output power:
2 x 15 watts @ 4 ohms, or 2 x 8 watts @ 8 ohms
ENERGY STAR^® qualified amplifier
90 dB signal-to-noise ratio with 0.1% THD+N
Defeatable auto power-down timer for 24/7 applications
Extron Patented CDRS™ - Class D Ripple Suppression
Bass, treble, and input level controls

Model	Version Description	Part #
MPA 152 Plus	Stereo Amp - 15 Watts/Ch	60-844-03

The Extron MPA 152 Plus is a quarter rack width, stereo integrated mini power amplifier that delivers 15 watts rms per channel. The MPA 152 Plus features a 90 dB signal-to-noise ratio with 0.1% THD+N, offering exceptional performance for speaker systems requiring compact, economical audio amplification. The MPA 152 Plus is an ENERGY STAR^® qualified amplifier with an Extron exclusive, highly efficient, advanced Class D amplifier design. It also features patented CDRS™ - Class D Ripple Suppression technology that provides a smooth, clean audio waveform and an improvement in signal fidelity over conventional Class D amplifiers. The Extron exclusive, high efficiency design generates very little heat and allows the amplifier to be fanless and operate in environments with little or no ventilation.

This mini power amplifier is ideal for small audio systems intended to provide a significant step-up in sound quality over the amplifiers and speakers built into displays. The MPA 152 Plus features significant performance capabilities in terms of signal-to-noise ratio and THD+N. It also features a maximum input level +12 dBu for balanced signals and +9 dBV for unbalanced signals.

Energy Efficient Amplifier with Auto Power-Down

The MPA 152 Plus ENERGY STAR qualified amplifier is an energy efficient product that conserves energy and reduces costs. With an auto power-down feature that automatically places the amplifier into standby after 25 minutes of inactivity, it consumes 4 watts when idle and less than 1 watt in standby mode.

The MPA 152 Plus is housed in a compact 1U, quarter rack width enclosure. This amplifier is UL 2043 plenum rated, allowing for a concealed installation above a drop ceiling to prevent theft while providing convenient placement of AV equipment.

The MPA 152 Plus delivers 15 watts rms per channel into 4 ohms and 8 watts rms into 8 ohms. It is optimized for driving four 8 ohm ceiling speakers, two in parallel per channel.

The MPA 152 Plus accepts balanced and unbalanced stereo input signals, and provides stereo or dual mono outputs. Three individually buffered inputs are available so three separate sources can be connected without altering performance. The front panel includes controls for bass, treble, and input level, and a switch for stereo or dual mono operation. An advanced, automatic clip limiter protects speakers from clipping distortion. For applications requiring volume adjustment and muting control from a location other than the amplifier, remote control capability is available using the optional Extron VCM 100 or VCM 200 analog volume and mute controller or VC 50 analog volume controller.

Features

Inputs: Balanced or unbalanced stereo on a captive screw connector; unbalanced stereo on RCA connectors and a 3.5 mm stereo mini jack

Speaker Outputs: 5 mm captive screw connector

30 watts rms output power:
2 x 15 watts @ 4 ohms, or 2 x 8 watts @ 8 ohms — The MPA 152 Plus is designed for use in classrooms and other applications requiring compact, economical audio solutions that provide a significant step-up in sound quality over the speakers built into displays.

ENERGY STAR^® qualified amplifier — The MPA 152 Plus is an ENERGY STAR qualified amplifier and energy efficient product that conserves energy and reduces costs.

90 dB signal-to-noise ratio with 0.1% THD+N — The MPA 152 Plus ensures quiet, low-noise amplification and maintains audio signal integrity for exceptional performance in a compact, economical amplifier.

Defeatable auto power-down timer for 24/7 applications — Ensures amplifier is always active for 24/7 operation in critical applications, while still retaining ENERGY STAR qualification.

Extron Patented CDRS™ - Class D Ripple Suppression — CDRS is an Extron Patented technology that provides a smooth, clean audio waveform and an improvement in signal fidelity over conventional Class D amplifier designs. CDRS eliminates the high frequency switching ripple characteristic of Class D amplifiers, a source of RF emissions which can interfere with sensitive AV equipment such as wireless microphones.

Bass, treble, and input level controls

Stereo/dual mono toggle switch — Allows the user to choose between stereo output, or to sum the left and right channels into dual mono outputs.

UL 2043 plenum rated — The MPA 152 Plus meets UL 2043 for smoke and heat release for installation within a plenum airspace above a drop ceiling – power supply excluded. Above-the-ceiling placement conceals the amplifier to prevent theft, and is convenient for installing equipment when space inside the room is limited.

Balanced and unbalanced buffered audio inputs — Accepts balanced or unbalanced audio input signals on a captive screw connector, and unbalanced audio on both RCA connectors and a 3.5 mm stereo mini jack. The three inputs are individually buffered, and can be connected to three separate sources at the same time without altering performance.

Convection cooled, fanless operation — The MPA 152 Plus does not require internal fans or vents for cooling, ensuring quiet, reliable operation. It generates substantially less heat than conventional power amplifiers, making it ideal for rack-mount applications.

Auto power-down with fast power-up — The MPA 152 Plus meets ENERGY STAR qualification requirements with an auto power-down feature that automatically places the amplifier into standby after 25 minutes of inactivity, dramatically reducing power consumption. It quickly returns to full power status in less than one second upon signal detection. This auto power-down feature can be defeated to allow for 24/7 operation.

Automatic clip limiter — Detects actual onset of clipping by comparing input and output waveforms. Gain is automatically reduced without audible artifacts to protect speakers from clipping distortion.

Remote volume and mute control port — In basic installations without control systems, this port allows the MPA 152 Plus to be remotely controlled using the optional Extron VCM 100 or VCM 200 analog volume and mute controller or VC 50 analog volume controller.

Rack-mountable 1U, quarter rack width metal enclosure

External Extron Everlast™ power supply included, replacement part #70-1259-01 — Provides worldwide power compatibility with high‑demonstrated reliability and low power consumption

Extron Everlast Power Supply is covered by a 7‑year parts and labor warranty

OPTIONAL ACCESSORIES
	MLC Plus 84 D	MediaLink Plus Controller - Decorator-Style Wallplate
	MLC Plus 84 MK	MediaLink Plus Controller - MK Wallplate
	MLC Plus 84 EU	MediaLink Plus Controller - EU Wallplate
	MLC Plus 100	MediaLink Plus Controller
	MLC Plus 200	MediaLink Plus Controller
	MLC Plus 100 AAP	MediaLink Plus Controller with AAP Opening
	MLC Plus 200 AAP	MediaLink Plus Controller with AAP Opening
	UTS 100 Series	Under Table Shelf System
	RSB 123	Basic Rack Shelf for 3.5" Deep Products
	Half Rack Shelf System	Half-Rack Width Rack Shelf and Accessories
	RSF 123	Rack Shelf Kit for 3.5" Deep Products
	MBU 123	Low-Profile Mount Kit for 1/8, 1/4, and 1/2 Rack Width Products
	ATB 100	Amplifier Tile Bridge Ceiling Mount Kit
	PMK 100	Pole Mount Kit for One 1/4 Rack Width Product
	PMK 350	Low Profile Pole Mount Kit for Multiple Products
	PMK 155	Pole and select Cable Cubby Enclosures Mounting Kit for up to 1/2 Rack Width Products
	WBA 100	Wall and Box Mount Adapter
	ZipClip 200	Mounting Kit for 1/8 and 1/4 Rack Width Products
	ZipClip 400	Mounting Kit for 1/8, 1/4, and 1/2 Rack Width Products
	PPC 25	Priority Page Controller
	MLA VC10 Plus	Volume Control Module
	VC 50	Volume Control Wallplate
	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
	SPK 18	18 AWG Speaker Cable
	SPK 16	16 AWG Speaker Cable
	SPK 18	18 AWG Speaker Cable
	SPK 16	16 AWG Speaker Cable
	SPK 14	14 AWG Speaker Cable
	Mini Audio Cables	3.5 mm Male to Male Stereo Audio Cables
	RCA Audio Cables	RCA Male to Male Stereo Audio Cables

OPTIONAL ACCESSORIES

MLC Plus 84 D

MediaLink Plus Controller - Decorator-Style Wallplate

MLC Plus 84 MK

MediaLink Plus Controller - MK Wallplate

MLC Plus 84 EU

MediaLink Plus Controller - EU Wallplate

MLC Plus 100

MediaLink Plus Controller

MLC Plus 200

MediaLink Plus Controller

MLC Plus 100 AAP

MediaLink Plus Controller with AAP Opening

MLC Plus 200 AAP

MediaLink Plus Controller with AAP Opening

UTS 100 Series

Under Table Shelf System

RSB 123

Basic Rack Shelf for 3.5" Deep Products

Half Rack Shelf System

Half-Rack Width Rack Shelf and Accessories

RSF 123

Rack Shelf Kit for 3.5" Deep Products

MBU 123

Low-Profile Mount Kit for 1/8, 1/4, and 1/2 Rack Width Products

ATB 100

Amplifier Tile Bridge Ceiling Mount Kit

PMK 100

Pole Mount Kit for One 1/4 Rack Width Product

PMK 350

Low Profile Pole Mount Kit for Multiple Products

PMK 155

Pole and select Cable Cubby Enclosures Mounting Kit for up to 1/2 Rack Width Products

WBA 100

Wall and Box Mount Adapter

ZipClip 200

Mounting Kit for 1/8 and 1/4 Rack Width Products

ZipClip 400

Mounting Kit for 1/8, 1/4, and 1/2 Rack Width Products

PPC 25

Priority Page Controller

MLA VC10 Plus

Volume Control Module

VC 50

Volume Control Wallplate

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

SPK 18

18 AWG Speaker Cable

SPK 16

16 AWG Speaker Cable

SPK 18

18 AWG Speaker Cable

SPK 16

16 AWG Speaker Cable

SPK 14

14 AWG Speaker Cable

Mini Audio Cables

3.5 mm Male to Male Stereo Audio Cables

RCA Audio Cables

RCA Male to Male Stereo Audio Cables

RELATED SPEAKERS
	SF 3C LP	SoundField XD 3" Full-Range 8 Ohm Ceiling Speakers with 4" Low Profile Composite 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
	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
	SM 3	SpeedMount Compact Full-Range Surface Mount Speakers

RELATED SPEAKERS

SF 3C LP

SoundField XD 3" Full-Range 8 Ohm Ceiling Speakers with 4" Low Profile Composite 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

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

SM 3

SpeedMount Compact Full-Range Surface Mount Speakers

RELATED PRODUCTS
	XPA U 2004 FX	Four Channel Configurable Output Audio Power Amplifier 200 Watts Per Channel
	XPA U 2008 FX	Eight Channel Configurable Output Audio Power Amplifier 200 Watts Per Channel
	XPA U 4004 FX	Four Channel Configurable Output Audio Power Amplifier 400 Watts Per Channel
	XPA U 2002 SB	Two Channel Bridgeable Output Amplifier 200/400 Watts Per Channel
	XPA U 1004 SB	Four Channel Bridgeable Output Amplifier 100/200 Watts Per Channel
	XPA U 1002	Two Channel Low and High Impedance Amplifiers 100 Watts Per Channel
	XPA U 3502	Two Channel Audio Power Amplifier 350 Watts Per Channel
	XPA U 1004	Four Channel Low and High Impedance Amplifiers 100 Watts Per Channel
	XPA U 358	Eight Channel Low and High Impedance Amplifiers 35 Watts Per Channel
	XPA U 358C	Eight Channel Combo Amplifier 35 Watts Per Channel
	XPA U 758	Eight Channel Low Impedance Amplifier 75 Watts Per Channel
	XPA 1002	Two Channel Low Impedance Amplifier 60/100 Watts Per Channel
	XPA 2001	Mono 70/100 V Amplifier - 200 Watts
	XPA 2004	Four Channel Amplifier - 200 Watts Per Channel
	XPA 4002	Two Channel Amplifier - 400 Watts Per Channel

SIMILAR PRODUCTS
	MPA 601	Mono 70/100 V Amplifier - 60 Watts

SIMILAR PRODUCTS

MPA 601

Mono 70/100 V Amplifier - 60 Watts

Specifications

MPA 152 Plus

Audio

Voltage gain

Balanced

25x (28 dB)

Unbalanced

50x (34 dB)

Stereo channel separation

>60 dB @ 1 kHz

CMRR

74 dB (typical) @ 1 kHz

Bass adjustment

±10 dB @ 80 Hz (reference) to 1 kHz (2 dB tolerance)

Treble adjustment

±10 dB @ 10 kHz (reference) to 1 kHz (2 dB tolerance)

Audio input

Number/signal type

1 stereo, balanced/unbalanced input
2 stereo, unbalanced inputs
(The three inputs are individually buffered and summed together.)

Connectors

(1) 3.5 mm captive screw connector, 5 pole (main input)
(1) 3.5 mm mini audio jack (tip, ring, sleeve)
1 pair female RCA

Impedance

>10k ohms unbalanced/balanced, DC coupled

Maximum level

RCA and TRS inputs

+9 dBV (unbalanced) at 1% THD+N

Captive screw input

+12 dBu (balanced) at 1% THD+N

Input sensitivity

Balanced

-8 dBu

Unbalanced

-16 dBV

Input signal detection threshold

RCA and mini audio jacks: -53 dBV (2.24 mV) ±3 dB, unbalanced
Captive screw connector: -46 dBu (3.88 mV) ±3 dB, balanced

NOTE	0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu

Audio output

Number/signal type

1 stereo or 2 mono (2 channels total)

Connector

(1) 5 mm captive screw connector, 4 pole

Load impedance

4 ohms, minimum

Amplifier type

Class D

Output power

8 watts rms per channel, 8 ohms, 1 kHz, 1% THD
15 watts rms per channel, 4 ohms, 1 kHz, 1% THD

Frequency response

20 Hz to 20 kHz, +1/-3 dB @ 8 ohms

THD + Noise

<0.1% -3dB below clipping @ 1 kHz, 8 ohm load

S/N

90 dB, 20 Hz to 20 kHz, unweighted

Damping factor

>100 at 8 ohms

Communications — amplifier

Control port

(1) 3.5 mm captive screw connector, 3 pole

Pin configuration

Pin 1 = +10 VDC, 50 mA (max.), pin 2 = volume/mute (variable voltage), pin 3 = GND

Volume control voltage range

0 V (mute) to 10 V (maximum volume)

General

Power supply

External
Input: 100-240 VAC, 50-60 Hz
Output: 12 VDC, 2 A, 24 watts

Power consumption and thermal dissipation

		115 VAC, 60Hz				230 VAC, 50Hz
		AC Line Current	AC Power Consumed	Thermal Dissipation		AC Line Current	AC Power Consumed	Thermal Dissipation/
Condition		A	W	W	BTU/hr	A	W	W	BTU/hr
Active (1/8 power), all channels driven	8Ω	0.1	5.8	3.8	13	0.1	5.9	3.9	13
	4Ω	0.1	7.8	4.1	14	0.1	7.8	4.1	14



Quiescent (idle)		0.1	3.4	3.4	12	0.1	3.4	3.4	12
Standby		<0.1	<1	<1	<3	<0.1	<1	<1	<3

NOTE	Standby is triggered after 25 minutes (±5 minutes) with no signal

Ambient temperature/humidity

Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing

Cooling

Convection, no vents

Mounting

Rack mount

Yes, with optional 1U rack shelf or back of rack mounting kit

Furniture mount

Yes, with optional mini under desk mounting kit

Pole mount

Yes, with optional pole mounting kit

Enclosure type

Metal

Enclosure dimensions

1.7" H x 4.3" W x 3.0" D (1U high, quarter rack wide)
(4.3 cm H x 10.9 cm W x 7.6 cm D)
(Depth excludes connectors.)

Product weight

0.6 lbs (0.3 kg)

Regulatory compliance

BSMI, CCC, CE, C-tick, c-UL, FCC Class B, ICES, KC, RoHS, UL VCCI, WEEE
UL rated for use in plenum airspaces: meets UL 2043 for heat and smoke release, excluding the power supply; meets UL/IEC 62368-1 for safety.
Complies with the appropriate requirements of CEC, ENERGY STAR® (ENERGY STAR qualified amplifier), EU code of conduct

Product warranty

3 years parts and labor

Everlast power supply warranty

7 years parts and labor

NOTE	All nominal levels are at ±10%.

NOTE	Specifications are subject to change without notice.

(5664-D7)

Shipping Dimensions and Weights
Part #	Height	Width	Depth	Weight
60-844-03	3.0" (7.6 cm)	7.5" (19.1 cm)	10.5" (26.7 cm)	2.34 lbs (1.06 kg)

MPA 152 Plus

Energy Efficient Amplifier with Auto Power-Down

Features

Specifications

Diagram

Panel Drawing