PS AUDIO STELLAR 1200

Ex-demo from distributor. Comes with original packaging and manual.

The Stellar M1200 is a monoblock amplifier that combines the warm musicality of vacuum tubes with the power and nearly unlimited dynamics of a high-performance 1200-watt output stage. This hybrid amplifier is designed to deliver uncompromising sound, effortlessly handling both the most delicate passages and the most explosive crescendos of an orchestra or rock band, always maintaining linear performance without sonic compression. Its strength lies in a Class A input stage based on a carefully selected 12AU7 vacuum tube, powered by a dedicated analog power supply, which preserves every detail, even the finest, and keeps the fastest and most dynamic transients intact.

The delicate signal is amplified by a MOSFET output stage using ICE Edge Class D technology, ensuring high current, minimal distortion, and outstanding efficiency. This allows the M1200 to deliver 600 watts into 8 ohms and an impressive 1200 watts into 4 ohms, maintaining stability down to 2 ohms. The combination of the feedback-free tube input stage and the linear Class D output stage offers a rich, warm, and highly detailed listening experience, where music retains its naturalness and original character even at higher power levels.

The design of the Stellar M1200 eliminates a common issue in many amplifiers: sonic compression that occurs when the music becomes complex or very intense. Thanks to its high headroom and precise reproduction, this amplifier faithfully responds to every demand from the speaker, delivering lively and dynamic sound as if the performance were live. A damping factor above 1100 and a frequency response extending up to about 50 kHz ensure crystal-clear musical reproduction, with low distortion and a broad sonic spectrum well beyond the limits of human hearing.

The M1200 proves ideal with any type of speaker, from the smallest to the most demanding, thanks to its ability to deliver abundant power effortlessly and its high linearity. It features RCA single-ended and true balanced XLR inputs, offers stability with difficult loads, and is designed to ensure maximum reliability with low heat production. Weighing about 12 kg per monoblock, the Stellar M1200 represents the perfect synthesis of advanced technology and passion for music, delivering an authentic sonic experience.

Technical specifications:

• Vacuum tube type: 12AU7
• Power input: IEC C14
• Idle power consumption: 27W
• Power factor: >0.9 at rated power 4Ω
• Audio inputs: RCA (unbalanced); XLR (balanced)
• Speaker outputs: nickel-plated binding posts on copper base (2 pairs)
• DC trigger input: 3.5 mm, 5-15 V DC
• Gain: 30.5 dB ±0.5 dB
• Sensitivity for rated output power: 2.08 V
• Signal-to-noise ratio: 1 kHz @ 1200 W > 112 dB
• Input impedance: unbalanced 50 kΩ; balanced 100 kΩ
• Output impedance: 50 Hz, 2.8 VRMS < 0.007 Ω
• Damping factor: 50 Hz, 2.8 VRMS; 8Ω > 1100; 4Ω > 550
• Frequency response: 2.8 VRMS into 4Ω; 10 Hz – 20 kHz ±0.5 dB; 10 Hz – 45 kHz +0.1 / -3.0 dB
• Total harmonic distortion (THD) & Intermodulation (IM): 1 kHz, 1 W/4Ω < 0.005%; 10-20 kHz, 1 W/4Ω < 0.01%; 1 kHz, 150 W/4Ω < 0.02%
• Output power (120 V AC, 1 kHz, 1% THD): 8Ω 600 W minimum; 4Ω 1200 W minimum
• Stability: stable down to 2Ω for musical transients
• Unit weight: 12.2 kg each
• Unit dimensions: 17” W x 3.75” H x 12” D (13” D with connectors); 17” W x 7.5” H x 12” D (stacked units)