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The Audio Tailor - Powerhouse - Package


Included Premium Products

  • PS Audio Stellar M700 - Mono Block Power Amplifier (pair)
  • PS Audio Stellar Gain Cell - DAC & Preamplifier
  • PS Audio Power Plant 3 - Power Regenerator
  • PMC Twenty5.23 - Floorstanding Speakers


Product Overview

Stellar M700

All amplifiers sound different. What determines sound quality are the components and topologies of the amp’s input voltage stage and output current stage. Each section should complement the other. Between them, the amp develops its sound.

Stellar’s design imperatives—affordable pricing, uncompromised sonics—were major challenges solved by the invention of a unique new circuit christened the Analog Cell™. Stellar engineer Darren Myers had planned from the outset to take advantage of Class D’s high current, low distortion, ruler flat linearity for the output stage—knowing full well it is the input stage that determines sonic character. This critical interface between preamplifier and power amplifier is where Stellar’s magic would be unveiled; where Myers could lavish upon the music the sweet, tube-like quality of Class A biased MOSFETs. His challenge was to synergistically marry both input and output topologies, for which he invented Stellar’s Analog Cell.

The Analog Cell is the heart of the M700’s musicality, where richly overlayed layers of music’s inner details are preserved even in the most complex orchestral crescendos. The Analog Cell is a proprietary, fully differential, zero feedback, discrete, Class A MOSFET circuit, hand-tuned to capture the smallest micro dynamics without sacrificing the loudest macro dynamics music has to offer.

Stellar Gain Cell

Even the best DACs in the world benefit from a zero-loss analog preamp. That fact was the basis of the Stellar Gain Cell design imperative. Combine a cutting edge DAC’s output with a no compromise analog preamplifier. A unique combination of a gorgeous full-featured digital to analog converter and state of the art analog amplification. Add any analog or digital source to Stellar’s input, a power amp and speakers to its output, and music filled with rich textures and toe-tapping energy surprise and delight even the most critical Audiophile.

Power Plant 3

Providing 300 watts of continuous power output and peaks of 900 watts, the P3 is the perfect companion for source gear and systems running high efficiency Class D amps like the Stellar M700 monoblocks. Designed with elegant simplicity in mind, the P3 is a plug and play device that will provide you with perfect power without any fuss.

Power Plants are regarded for their ability to reduce noise and THD to virtually zero while providing rock steady voltage output. Through the P3’s active regeneration process, it is able to provide perfect power while also lowering the impedance, increasing the dynamics and openness of your system. Best of all, the P3 features overbuilt surge and spike protection, meaning you can rest easy knowing your system is safe.

Don’t starve your music or risk damaging your equipment. A P3 gives you greatly improved performance and safety from just plugging into the wall socket and far better dynamics, more authoritative bass and a much bigger, more open soundstage.


Arguably the most elegant model in the range, the twenty5.23 takes the speed, transparency and sophistication of the twenty5.21 and adds greater bass extension and power. And yet its slim-line form doesn't mean it can't move you. No matter what type of music you love, the twenty5.23 will let you absorb the quietest and most dramatic moments without missing a beat, and its realism with vocals puts you in the best seat in the house.


For more detailed features, see Stellar M700, Stellar Gain Cell, Power Plant 3 and Twenty5.23



Stellar M700

  • Unit Weight - 13 lbs [5.9 kg] (each)
  • Unit Dimensions - 17”W x 3”H x 12”D (13"D w/connectors) / 17”W x 6”H x 12”D (Stacked)
  • Colour Options - Black, Silver
  • Voltage Options (Factory set only)- 230V
  • Mains Power Inputs - IEC C14
  • Idle Power Consumption - 23W
  • 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)
  • DC Trigger Input - 3.5mm 5-15VDC

- Signal

  • Gain - 30.5dB +/-0.5dB
  • Sensitivity for rated output power - 1.6V
  • Noise - 1kHz@700 Watts < -105dB
  • 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


  • 1KHz, 1W/4Ω - <0.02%
  • 10-20KHz, 1W/4Ω - <0.02%
  • 10-50KHz, 1W/4Ω - < 0.05% (90kHz BW)
  • 1KHz, 87.5W/4Ω - < 0.015%
  • Output Power - 120vac mains, 1kHz, 1% THD
  • 8Ω - 350W minimum
  • 4Ω - 700W minimum
  • 2Ω - Stable for musical transients

Stellar Gain Cell

- Physical

  • Unit Weight - 13.5 lbs [6.1 kg]
  • Unit Dimensions - 17” x 12” x 3”

- Power requirements


  • Input Power - Model specific 100VAC, 120VAC, or 230VAC 50 or 60Hz
  • Power Consumption - 20W
  • Mains Power Input - IEC C14
  • Fuses - 100V T250V-2.0AH (2A Slow Blow), 120V T250V-1.6AH (1.6A Slow Blow), 230V T250V-1.0AH (1.0A Slow Blow)
  • Accessories included - US (NEMA 5-15P) (all versions), Schuko (CEE7/7) (230V version), UK (BS1363) (230V version)

- Analog inputs

  • RCA 3 stereo pair
  • XLR 1 stereo pair

- Digital audio inputs

  • I2S - 1 PCM (384KHz max), DSD64 DSD128, Compatible with DirectStream Transport SACD handshake for DSD playback
  • Coax - 2 PCM (192KHz max)
  • Optical - 1 PCM (96KHz max)
  • USB - PCM (384KHz max), DSD64 (DoP) DSD128 (DoP)
  • Format - PCM, DSD

- Analog Audio Outputs

  • RCA - (Analog Unbalanced) 1 stereo pair
  • XLR - (Analog Balanced) 1 stereo pair
  • Headphones - One 1/4" headphone connector front panel

- Analog Performance

  • Gain - 12dB +/-0.5dB
  • Maximum output - 20 Vrms
  • Sensitivity - 5.3Vrms
  • Input Impedance - 47KΩ single ended RCA, 100KΩ Balanced XLR
  • Output Impedance - 100Ω single ended RCA, 200Ω balanced XLR
  • Frequency Response - 20Hz – 20KHz +0/- 0.25dB, 10Hz – 100KHz +0.1/-3.0dB
  • Noise - 20-20KHz
  • S/N Ratio - 1KHz >110dB (max output)
  • Channel separation - 1KHz >90dB
  • Input separation - 1KHz >90dB
  • THD&IM - 1KHz < 0.025%, 20-20KHz < 0.05%

- Headphone performance

  • Output power @1% THD - 300Ω 300mW, 16Ω 3.25W
  • S/N Ratio 1kHz Noise - >95dB (max output),
  • THD & IM 1Vrms out - 300Ω <0.05%, 16Ω <0.06%
  • Output impedance - <4 Ω

- Features

  • Volume Control - 0-100 (1/2 and 1dB steps, 80dB total range)
  • Balance Control - 24dB each direction in 1/2dB steps
  • Home Theatre Mode - Assignable to any analog input, Adjustable (in setup) to any level
  • Polarity (phase) Control - Digital sources only
  • Filter Control - 3 selectable digital filters (PCM digital sources only)
  • Trigger output - (3.5mm 5-15VDC) 2
  • Remote Control - Yes. Infra Red

Power Plant 3

- Environment Specification

  • Location - Indoor use only
  • Duty Cycle - Suitable for continuous operation
  • Moisture Sensitivity - Not sealed against moisture
  • Operating Humidity - <80%rh
  • Storage Temperature - -40C to +40C
  • Operating Temperature - 0C to 40C
  • Electrical Supply Nominal Rating - 230V 10A 50/60Hz

- Instrument Specification

  • Unit Dimensions - 17” W x 12” D x 3.25” H (43cm x 30.48cm x 8.255 cm)
  • Unit Weight - 31.4 lbs ( 14.24 kg)
  • Nominal Input Voltage - 200 –270 VAC
  • Maximum Continuous Load - 300VA
  • Maximum Peak Load (30 seconds) - 1000VA
  • Voltage Regulation - <0.2%
  • Typical Output THD - <0.3%
  • Output Impedance - <0.008 ohm
  • Efficiency @ 300VA - >85%
  • Input Frequency - 45-65Hz
  • Energy Dissipation - 850J
  • Peak Current Surge - 60,000A
  • Max Surge Voltage - 6,000V
  • Clamp Level - 800V
  • DC Trigger - None


  • Crossover Frequency:1.8kHz
  • Dimensions:H 907mm 35.7” (+20mm spikes) x W 162mm 6.4 ” (238mm incl. plinth bars) x D 330mm 13” (+9mm grille)
  • Drive Units:LF - PMC twenty5 series 5.5”/140mm long-throw g-weave™ cone with cast alloy chassis
  • HF - PMC/SEAS®, 27mm twenty5 series, SONOLEX™ fabric soft dome, Ferrofluid cooled Effective ATL™
  • Length:2.4m 7.8ft
  • Frequency Response:28Hz – 25kHz
  • Impedance:8 Ohms
  • Input Connectors:One pair 4mm binding posts
  • Sensitivity:86.5dB 1W 1 m
  • Weight:15kg 33 lbs ea.

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