Power Amplifiers

A new generation of power amplifiers.

Engineered to a standard you can hear: natural timbre, low noise, low feedback.

A power amplifier takes the line-level signal from your preamp or source and drives your loudspeakers with the power they need to fill the room.

Eight models spanning the PMG Signature Series, Stellar power amplifiers, and the Stellar Strata MK2 all-in-one integrated. From reference PMG monoblocks and stereo amplifiers to the accessible Stellar M700, S300, and M1200 — plus the Strata MK2 if you want DAC, preamp, phono, and amplification in one chassis.

PMG Signature amplifiers share one topology — designed by Darren Myers, engineered by Bob Stadtherr — with an active power supply and Class A bias that keeps your music in the most linear region of operation. Stellar models bring high-current performance within reach. Bandwidth beyond 500 kHz, low feedback, and a presentation that lets your speakers disappear into the music.

This is the PS Audio power amplifier family. Hand built in Boulder, Colorado. From reference PMG Signature to accessible Stellar — engineered to bring music to life.

Choose your model

Flagship

PMG M800 Monoblock

$29,998.00

per pair

Our finest power amplifier — period.

400 watts into 8Ω, doubling to 800 watts into 4Ω
50W Class A bias — 99% of typical listening in pure Class A
Slew Rate >200V/uS
Bandwidth exceeding 500 kHz
Flat distortion across the audible band with strikingly low overall feedback
State-of-the-art active power supply
Balanced (XLR) and single-ended (RCA) inputs
Available in Silver or Black
Hand built in Boulder, Colorado

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Reference

PMG M400 Monoblock

$17,998.00

per pair

A stunning reference monoblock.

200 watts into 8Ω, doubling to 400 watts into 4Ω
30W Class A bias
Slew Rate > 200V/uS
Bandwidth exceeding 500 kHz
Strikingly low overall feedback architecture
State-of-the-art active power supply
Designed by Darren Myers
Engineered by Bob Stadtherr

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Premium Stereo

PMG S400 Stereo

$9,999.00

PMG Signature, in stereo.

200 watts into 8Ω per channel, doubling to 400 watts into 4Ω per channel
5W Class A bias per channel
Slew Rate > 200V/uS
Bandwidth exceeding 500 kHz
Strikingly low overall feedback architecture
State-of-the-art active power supply
Designed by Darren Myers
Engineered by Bob Stadtherr

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Stereo

PMG S200 Stereo

$7,999.00

As sweet as Class A gets.

100 watts into 8Ω per channel, doubling to 200 watts into 4Ω per channel
10W Class A bias per channel
Slew Rate >200V/uS
Bandwidth exceeding 500 kHz
Strikingly low overall feedback architecture
State-of-the-art active power supply
Designed by Darren Myers
Engineered by Bob Stadtherr

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M1200 Amplifier Pair

$6,998.00

per pair

The Stellar M1200 mono amplifiers are a high power super linear amplifier with a vacuum tube input providing uncompressed performance.

MONO POWER AMPLIFIER PAIR
ZERO-LOSS TUBE INPUT STAGE
POWERFUL MOSFET OUTPUT STAGE
RCA SINGLE ENDED INPUT
XLR "TRUE" BALANCED INPUT
600 WATTS PER CHANNEL 8Ω
1200 WATTS RMS INTO 4Ω
2Ω STABLE
ICE EDGE TECHNOLOGY
DAMPING FACTOR > 1100
FRONT PANEL STANDBY BUTTON
VERY LITTLE HEAT PRODUCTION
DUAL, SOLID, COPPER PLATED OUTPUT POSTS
27 LBS. EACH
INPUT 12v TRIGGER

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M700 Amplifier Pair

$3,498.00

per pair

The Stellar M700 mono amplifiers are a massively powerful engine capable of effortlessly driving demanding loudspeaker loads to concert l...

MONO POWER AMPLIFIER PAIR
ZERO-LOSS ANALOG CELL INPUT
POWERFUL MOSFET OUTPUT STAGE
RCA SINGLE-ENDED INPUT
XLR "TRUE" BALANCED INPUT
350 WATTS PER 8Ω CHANNEL
700 WATTS PER 4Ω CHANNEL
2Ω STABLE
< 0.1% THD 20Hz 20kHz AT RATED POWER
DAMPING FACTOR = 1100
FRONT PANEL STANDBY
VERY LITTLE HEAT PRODUCTION
DUAL, SOLID, COPPER PLATED OUTPUT POSTS
27 LBS
INPUT 12v TRIGGER

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S300 Amplifier

$1,999.00

From the deepest bass to the warmest, sweetest highs, the Stellar S300 makes any loudspeaker sing and is our most affordable stereo power...

STEREO POWER AMPLIFIER
DUAL MONO WITH SEPARATE POWER SUPPLIES
POWERFUL MOSFET OUTPUT STAGE
RCA SINGLE-ENDED INPUT
XLR "TRUE" BALANCED INPUT
140 WATTS PER CHANNEL 8Ω
300 WATTS PER CHANNEL 4Ω
2Ω STABLE
VERY LITTLE HEAT PRODUCTION
< 0.1% THD 20Hz - 20kHz AT RATED POWER
DAMPING FACTOR > 550
FRONT PANEL STANDBY BUTTON
ZERO-LOSS INPUT
DUAL, COPPER, PLATED, OUTPUT BINDING POSTS
13 LBS.
INPUT 12 VOLT TRIGGER

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Stellar Strata MK2

$3,499.00

An all-in-one integrated with streaming DAC, preamplifier, MC/MM phono stage, and 150-watt power amplifier — no need to give up performan...

CLASS A BALANCED ANALOG PREAMPLIFIER
FULL FUNCTION DAC
MC/MM PHONO STAGE INPUTS
CLASS A HEADPHONE AMPLIFIER
150 WATT PER CHANNEL POWER AMPLIFIER
TWO I2S INPUT
FOUR TYPES OF DIGITAL INPUTS
DIGITAL LENS TECHNOLOGY
DSD DIRECT THROUGH I2S
192KHZ ASYNCHRONOUS COAX INPUT
384KHZ ASYNCHRONOUS USB
HIGH CURRENT CLASS A HYBRID OUTPUT STAGE

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Flagship PMG M800 Monoblock	Reference PMG M400 Monoblock	Premium Stereo PMG S400 Stereo	Stereo PMG S200 Stereo
$29,998.00 per pair	$17,998.00 per pair	$9,999.00	$7,999.00
Our finest power amplifier — period.	A stunning reference monoblock.	PMG Signature, in stereo.	As sweet as Class A gets.
400 watts into 8Ω, doubling to 800 watts into 4Ω 50W Class A bias — 99% of typical listening in pure Class A Slew Rate >200V/uS Bandwidth exceeding 500 kHz Flat distortion across the audible band with strikingly low overall feedback State-of-the-art active power supply Balanced (XLR) and single-ended (RCA) inputs Available in Silver or Black Hand built in Boulder, Colorado	200 watts into 8Ω, doubling to 400 watts into 4Ω 30W Class A bias Slew Rate > 200V/uS Bandwidth exceeding 500 kHz Strikingly low overall feedback architecture State-of-the-art active power supply Designed by Darren Myers Engineered by Bob Stadtherr	200 watts into 8Ω per channel, doubling to 400 watts into 4Ω per channel 5W Class A bias per channel Slew Rate > 200V/uS Bandwidth exceeding 500 kHz Strikingly low overall feedback architecture State-of-the-art active power supply Designed by Darren Myers Engineered by Bob Stadtherr	100 watts into 8Ω per channel, doubling to 200 watts into 4Ω per channel 10W Class A bias per channel Slew Rate >200V/uS Bandwidth exceeding 500 kHz Strikingly low overall feedback architecture State-of-the-art active power supply Designed by Darren Myers Engineered by Bob Stadtherr
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