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Stellar M1200 Mono Amplifier

1200 watt vacuum tube input power amplifier pair

Built in Boulder
This product is not yet available to order. We are in beta testing.

The Stellar M1200 monoblock power amplifier combines the rich warmth and musicality of vacuum tubes with the jaw-dropping power and seemingly infinite headroom of a 1200 watt high-performance output stage. This extraordinary hybrid amplifier knows no limits. From the subtlest musical whisperings to the loudest crescendos an orchestra or rock band is capable of, Stellar M1200 never flinches. Regardless of your speaker’s power demands or limitations, enjoy the once unachievable uncompressed effortlessness afforded by this design. Pure musical bliss for any loudspeaker made, from the smallest to the biggest. Stellar.

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This product is not yet available to order. We are in beta testing.

Stellar M1200 Power Amplifier

Product Description

The M1200 began as the dream project of PS engineer, Darren Myers who wanted to build a power amplifier without bounds or compression on even the loudest of musical passages, yet equally at home reproducing the subtlest of details.

To preserve both uncompressed dynamics as well as the tiniest of nuanced details requires a cost-no-object input stage, like that of a high-performance vacuum tube fed from its own analog power supply. The amp’s delicate input signals, now faithfully preserved by its vacuum tube input, then need to be amplified without restriction by taking advantage of a new type of Class D output power module. This extraordinarily high current, low distortion, MOSFET output stage combines state-of-the-art topologies with decades of design and listening experience to produce what we believe is the most musically satisfying amplifier of its kind.

The over-the-top high power output of the M1200 exists not to match a small handful of power-hungry speakers, but rather, to act as the perfect uncompressed power source for even the smallest, most efficient of speakers on the market.

Remember, power amplifiers deliver only the number of watts required by your speaker to achieve the desired loudness. Even the most powerful amplifiers deliver only what’s asked of them. What’s been missing in most amplifiers is adequate headroom and effortless linear performance—something only a vacuum tube-based powerhouse like the M1200 can unquestionably provide. From the most subtle of details to unheard of explosive dynamics, Stellar M1200 represents the pinnacle of high powered musicality that must be heard to be believed. Regardless of the power demands—or power limitations—of your loudspeakers, Stellar M1200 is the perfect choice if effortless musicality is in your future.

This product qualifies for our risk-free in-home trial in the continental United States when purchased directly from PS Audio. And, trade-in and save. Let us repurchase your old equipment at its full and original retail price. We’ll give it a good home and make sure you have the best power in the world. Just click the green Trade Up and Save button above these words to take advantage.

  • Mono power amplifier pair
  • Zero-loss Vacuum tube input stage
  • Powerful MOSFET balanced output stage
  • RCA Single ended input
  • XLR “true” balanced input
  • 600 watts into 8Ω
  • 1200 watts rms into 4Ω
  • 2Ω stable
  • Damping factor >1100 for excellent loudspeaker control
  • Efficient operation with very little heat
  • ICE Edge technology
  • Front panel standby button
  • Efficient operation with very little heat
  • Dual, solid copper, plated, output binding posts
  • 27 pounds each
  • Input 12 volt trigger

Stellar M1200 Mono Amplifier

Unit Weight27 lbs [12.2 kg] (each)
Unit Dimensions17”W x 3.75”H x 12”D (13"D w/connectors)
17”W x 7.5”H x 12”D (Stacked)

Shipping Weight29 lbs [13.15 kg] (each)
Shipping Dimensions22”W x 8”H x 17”D (each)
Color OptionsBlack
Silver
Vacuum tube type12AU7
Voltage Options
(Factory set only)
Japan 100V
North America 120V
Europe/Asia/Australia/New Zealand 230V
Mains Power InputsIEC C14
Idle Power Consumption27W
Power Factor>0.9 @ rated power 4Ω
Accessories IncludedUS (NEMA 5-15P) (all versions)
Schuko (CEE7/7) (230V version)
UK (BS 1363) (230V version)
Audio InputsRCA (Unbalanced)
XLR (Balanced)
Speaker Outputs Copper base nickel plated binding posts (2 pair)
DC Trigger Input 3.5mm 5-15VDC
Warranty3 years parts and labor

Signal

Gain30.5dB +/-0.5dB
Sensitivity for rated output power2.08V
Signal to Noise[email protected] Watts > 112dB
Input impedance Unbalanced 50KΩ
Balanced 100KΩ
Output Impedance50Hz, 2.8VRMS <0.007Ω
Damping factor50Hz. 2.8VRMS
8Ω >1100
4Ω >550
Frequency Response2.8VRMS into 4Ω
10Hz – 20KHz +/- 0.5dB
10Hz – 45KHz +0.1/-3.0dB

THD&IM

1KHz, 1W/4Ω< 0.005%
10-20KHz, 1W/4Ω< 0.01%
1KHz, 150W/4Ω< 0.02%

Output Power

120vac mains, 1kHz, 1% THD
8Ω600W minimum
4Ω1200W minimum
2ΩStable for musical transients

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