The X Series Stealth PA-1 is a high performance balanced Class-D monoblock power amplifier. The PA-1 combines compact size, high efficiency, and excellent sound quality in a single convenient package.
The Stealth PA-1 is the ideal solution anywhere a small great sounding monoblock power amplifier is needed. Use one to power a center channel speaker, use a full set to power your entire home theater system, or use several of them to add extra channels to your current audio system. Each PA-1 delivers 140 watts RMS into 8 Ohms, or 300 watts RMS into 4 Ohms. They are cool running and only require minimal ventilation. Because it’s so small, the PA-1 monoblock fits conveniently on any shelf, and rack mount kits are available to mount a single PA-1, or a pair of them side by side, in a single 1U rack space.
Not only does the Stealth PA-1 sound great, but it’s also simple to configure and use. The PA-1 runs on any line voltage between 100 VAC and 264 VAC, accepts a balanced input using either an XLR or balanced 1/4” connector, and can be configured to remain on continuously or to automatically switch itself on when it detects an incoming audio signal. Comprehensive protection circuitry protects the PA-1 from a variety of faults, without intruding on the quality of your music during normal operation, and automatically resets itself once the fault is removed.
-
Circuit Topology
-
The Emotiva Stealth PA-1 Class-D Monoblock Power Amplifier is a fully balanced high-performance Class D power amplifier featuring the ICEpower ASC300 amplifier module. The ICEpower ASC300 is self-contained, and includes an audiophile-grade Class D power amplifier, and an integral high-performance switch mode power supply.
-
The Stealth PA-1 combines a very small form factor, high efficiency, minimal cooling requirements, and near-bulletproof protection, all in a convenient and economical package.
Audio Specifications
-
Channels: 1
-
Output power:
140 watts RMS into 8 Ohms at 1 kHz at 1% THD;
135 watts RMS into 8 Ohms at 0.1% THD.
300 watts RMS into 4 Ohms at 1 kHz at 1% THD;
270 watts RMS into 4 Ohms at 0.1% THD.
450 watts RMS into 2.7 Ohms at 1 kHz at 1% THD -
Input impedance: 47k Ohms (balanced).
-
Voltage gain: 28 dB
-
Full power bandwidth: 20 Hz to 20 kHz.
-
THD+N: 0.005% at 1 kHz at 1 watt into 4 Ohms.
-
S/N ratio:
Referenced to 1 watt (A-weighted): 91 dB.
Referenced to full output (A-weighted): 112 dB. -
Frequency response: 20 Hz to 20 kHz +/- 1 dB (worst case; 4 Ohm load).
-
Damping factor: >500
-
Rated load: From 2.5 Ohms to 8 Ohms.
Input And Output Connections
-
Input Connections: Balanced; (accepts XLR, balanced ¼”, unbalanced ¼”).
-
Speaker Output Connections: Audiophile grade 5-way binding posts.
-
Trigger:
The Stealth PA-1 can be configured to turn on when an audio signal is detected.
Power Requirements
-
Anywhere between 100 VAC and 264 VAC @ 50 / 60 Hz (automatically detected).
-
Standby power: Approximately 0.275 watts.
-
Total power efficiency: Approximately 80%.
Front Panel Controls and Indicators
-
Power LED: Illuminates blue when the PA-1 is On.
Rear Panel Controls
-
AC Power switch: Rocker switch (switches AC main power).
-
Auto/On Switch:
In the On position, AC power to the PA-1 is controlled by the AC Power switch.
In the Auto position, the PA-1 switches on automatically when audio is detected.
Protection
-
The Stealth PA-1 is protected against excessive temperature, short circuit conditions, excessive DC offset at the output, and various input signal fault conditions. The protection circuitry in the PA-1 is totally transparent in normal operation. If a fault is detected, the PA-1 will instantly mute its output, and continue to monitor the situation. As soon as the fault is removed, the PA-1 will automatically reset itself and return to normal operation.
Mechanical
-
Dimensions:
8-1/2” wide x 1-7/8” high x 9” deep (unboxed, including feet, not including connectors).
8-1/2” wide x 1-3/4” high x 9” deep (unboxed, without feet). -
Weight: 3 lbs (unboxed) 6 lbs (boxed)
Downloads
-
