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PS Audio Stellar S300 Stereo Amplifier

Name: PS Audio Stellar S300 Stereo Amplifier
Brand: 300 watt dual mono Analog Cell power amplifier
Price: 3495.0 AUD
Availability: InStock

300 watt dual mono Analog Cell power amplifier

Colour: Silver

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$3,495

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

Breathe new life into your loudspeakers with the Stellar S300, a full-sized, affordable stereo power amplifier that honors the music and controls your loudspeakers better than you ever imagined possible. The S300 combines the slam, linearity, and toe-tapping pacing of a Class D output stage with the warmth, grace, and rich inner detail of Stellar’s Class A Analog Cell. The results are nothing short of ground breaking. Liberate a wealth of untapped energy trapped in your media library. Plumb music’s subterranean depths and finally hear the bass your speakers were capable of. Revel in rich layers of fine, full detail. Marvel at the deep, extraordinary, wall-to-wall soundstage. Effortless. Lush. Stellar.

DESIGN

The Stellar S300 stereo power amplifier is a dual mono power amplifier capable of effortlessly driving demanding loudspeaker loads to concert levels. It combines the best of two worlds: ultra linear, high-current, Class D technology for the output stage; a discrete, Class A MOSFET based Analog Cell for the all-important input stage. The S300's rich, warm, and engaging sonic character comes from the Analog Cell. It's powerful, authoritative control over the loudspeaker stems from its high current, ultra-low impedance Class D output stage.

APPLICATION

The perfect choice for just about any loudspeaker, the S300 slips into any system, surprising and delighting even the most discriminating Audiophile. Rated at 140 watts per channel into 8‎Ω and 300 watts per channel into 4‎Ω, the S300 has plenty of horsepower for even the most demanding loudspeakers. Your musical library will open up in ways you might not have thought possible, revealing nuance and detail covered up by traditional amplifiers.

Review from The Absolute Sound July 5 2024

"If you can’t get excited over an amp like the S300, you might reconsider your own high-end bona fides. Based on a Class D ICE module, the dual-mono amp is rated at 140Wpc into 8 ohms. That number seems conservative because it kicks like a 200-watter. The sleek low-profile design is matched by first-rate construction quality.

Sonically, the era of apologizing for Class D under-performance is over. Music simply snapped into view, in full harmonic bloom. Most vivid were dynamic contrasts from the micro level to the macro. The S300 was both fast and explosive off the mark, while timbral information, its ability to define the character and personality of each musical element, was in full-color display. The S300 wears its speed and rhythmic integrity like a badge of honor."

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

Unit Weight: 13 lbs [5.9 kg]
Unit Dimensions: 17”W x 3”H x 12”D (13″D w/connectors)
Shipping Weight: 16.5 lbs [7.5 kg]
Shipping Dimensions: 22”W x 8”H x 17”D

Voltage Options

(Factory set only) Japan 100V
North America 120V
Europe/Asia/Australia/New Zealand 230V

Mains Power Inputs: IEC C14

Idle Power Consumption: 13W

Accessories Included

US (NEMA 5-15P) (all versions)
Schuko (CEE7/7) (230V version)
UK (BS 1363) (230V version)

Audio Inputs: RCA (Unbalanced), XLR (Balanced)

Speaker Outputs: Copper base nickel plated binding posts (2 pair per channel)
DC Trigger Input: 3.5mm 5-15VDC
Warranty: 3 years parts and labour

Signal
Gain: 30.5dB +/-0.5dB
Sensitivity for rated output power: 1.01V
Noise: 1kHz@300 Watts < -100dB
Input impedance: Unbalanced 50KΩ, Balanced 100KΩ

Output Impedance: 50Hz, 2.8VRMS <0.007Ω

Damping factor

50Hz. 2.8VRMS
8Ω >1100
4Ω >550

Frequency Response

2.8VRMS into 4Ω
10Hz – 20KHz +/- 0.5dB
10Hz – 50KHz +0.1/-3.0dB

THD&IM
1KHz, 1W/4Ω: <0.02%
10-20KHz, 1W/4Ω: <0.02%
10-50KHz, 1W/4Ω: < 0.05% (90kHz BW)
1KHz, 37.5W/4Ω: < 0.01%

Output Power
Both channels driven 120vac mains, 1kHz, 1% THD
8Ω: 140W minimum
4Ω: 300W minimum
2Ω: Stable for musical transients

Tone Audio, Rob Johnson

The result of all these strengths gives the S300 a beautiful voice which mates well with the variety of upstream gear we had on hand for testing. It holds its own against components that exceed its price tag. This PS Audio component deserves a spot on a short list of bargain amps that perform beyond what one should expect for the money.

After a few weeks with the S300 in my reference system, I must admit I am smitten with it. I applaud PS Audio’s new approach to circuit design bringing together the benefits of both Class A and Class D technology. READ MORE

C/NET Steve Guttenberg

They sounded so good together I couldn't bring myself to try too many other speakers. The sound was rich with resolution to die for. READ MORE

HIFI Pig David Blumenstein

The Stellar DAC/Pre-Amp/Power Amplifier filled my listening room with 3D sound, and they matched well with each of my speakers; the floor standing Audio Physic Tempos, the stand mounted Platinum Audio ST 1’s and the low-to-the ground Mission 727s. I was surprised how different they made each sound and I spent a great deal of time swapping out my Parasound Halo 2.1 integrated amplifier, Bel Canto s300 integrated amplifier to make sure I wasn’t fooling myself. And, yes, I was hearing something new and more evocative from my usual suspects. READ MORE

10 Audio Jerry Seigel

Folks, this is the future. We have heard vast improvements of Class D amplifiers during the last 10 years, and we are at or near the point where the technology is largely irrelevant to the final sound. The sound of audio components is more dependent on the implementation than on the underlying technology. The PS Audio Stellar S300 gets so close to perfection that the low purchase price is an out-of-this-world value. The PS Audio Stellar S300 adds nothing objectionable while delivering wonderful musical performances. READ MORE

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PS Audio Stellar S300 Stereo Amplifier

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Review from The Absolute Sound July 5 2024

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