PS Audio Stellar M1200 Mono-Block Amplifiers

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

DESIGN
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. 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.

APPLICATION
Power amplifiers delivers 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.

Specifications
Stellar M1200 Mono Amplifier
Unit Weight    27 lbs [12.2 kg] (each)
Unit Dimensions    17”W x 3.75”H x 12”D (13″D w/connectors)
17”W x 7.5”H x 12”D (Stacked)
Shipping Weight    29 lbs [13.15 kg] (each)
Shipping Dimensions    22”W x 8”H x 17”D (each)
Color Options    Black
Silver
Vacuum tube type    12AU7
Voltage Options
(Factory set only)    Japan 100V
North America 120V
Europe/Asia/Australia/New Zealand 230V
Mains Power Inputs    IEC C14
Idle Power Consumption    27W
Power Factor    >0.9 @ rated power 4Ω
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
Warranty    3 years parts and labor
Signal
Gain    30.5dB +/-0.5dB
Sensitivity for rated output power    2.08V
Signal to Noise    1kHz@1200 Watts > 112dB
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 – 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
8Ω    600W minimum
4Ω    1200W minimum
2Ω    Stable for musical transients