Pass Labs XS 300 Class A Amplifier
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$177,495.00
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Pass-Labs-XS-300-Amplifier
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The Pass Labs Xs 300 is more than just a power amplifier; it is a masterclass in control and finesse. Engineered for the world’s most demanding loudspeakers and discerning listeners, it delivers 300 watts of pure Class A power into 8 ohms. This dual-chassis design ensures that the massive power reserves required for large-scale dynamics never interfere with the delicate nuances of the musical signal. The result is an amplifier that disappears completely, leaving only the music in an expansive, perfectly organized soundstage.
Key Features
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Flagship Class A Architecture: Delivers 300 watts of pure Class A power for a sound that is rich, liquid, and incredibly lifelike.
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Dual-Chassis Design: Separating the power supply and storage from the amplifier circuitry ensures maximum isolation from electromagnetic interference.
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112 Output Devices: Utilizes a massive array of heavy-duty power transistors per channel to provide effortless current delivery and absolute control over any speaker load.
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Massive Power Reserves: A staggering power consumption of 900 watts ensures the amplifier never runs out of headroom, even during the most complex orchestral crescendos.
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Unrivaled Tonal Density: Known for its ability to render instruments with their full weight and harmonic texture, avoiding the thinness often found in high-powered solid-state designs.
The Art of Absolute Control
The Xs 300 is celebrated for its ability to handle big swings in dynamics while keeping images rock-steady. With 112 output devices per channel, the amplifier possesses an iron grip over bass frequencies, delivering them with authority and shape. Despite its massive power, the Xs 300 maintains the sweetness and delicacy typically associated with small tube amplifiers, proving that scale and finesse can coexist in a single design.
Dual-Chassis Isolation
Separate power supply chassis for a silent noise floor.
300W Pure Class A
112 output devices provide effortless control and grip.
Artistic Engineering
Hand-tuned for a natural, life-like musical performance.
Dual-Chassis Engineering for Silent Operation
By moving the power supply to a dedicated second chassis, Pass Labs has effectively removed the primary source of mechanical and electrical noise from the signal path. This separation is key to the Xs 300’s ability to resolve the finest spatial cues and the natural decay of notes. When the amplifier stops being a component and becomes an open window to the recording, you are experiencing the true potential of the Xs series.
Flagship Dual-Chassis Engineering
The Pass Labs Xs 300 represents the pinnacle of Nelson Pass’s design philosophy, utilizing a dual-chassis monoblock architecture to achieve absolute signal purity. By physically separating the massive power supply and energy storage from the sensitive gain stages, this amplifier effectively eliminates electromagnetic interference and mechanical vibration from the signal path. This uncompromising approach results in a noise floor so low that the finest spatial cues and the most delicate harmonic overtones emerge with startling clarity.
Other Key Features
- Class / Type: Class A Mono
- Power Output: 300 Watts into 8 Ohm
- Output Devices: 112 per channel
- Chassis Count: 2 per mono side (Power Supply + Amplifier)
- Inputs: Balanced XLR and Single-Ended RCA
- Gain: 26 dB
- Power Consumption: 900 Watts (Constant)
- Combined Weight: 306 lbs per monoblock
FAQs
Why does the Xs 300 stay in Class A for its entire power rating?
True Class A operation eliminates crossover distortion, which is the primary reason for listener fatigue in many amplifiers. By staying in Class A up to its full 300-watt rating, the Xs 300 ensures that the signal remains pure and linear at all volume levels.
Does the Xs 300 run hot during operation?
Yes. Because it is a high-bias Class A design that consumes 900 watts constantly, both chassis will generate significant heat. It is essential to provide these amplifiers with plenty of ventilation and space to ensure long-term reliability.
Can the Xs 300 drive difficult, low-impedance speakers?
Effortlessly. With 112 output devices and a massive power supply, the Xs 300 is designed to drive any speaker on the market, including those with challenging impedance dips and low sensitivity, without losing its tonal composure.
Why are there two chassis for a single mono amplifier?
The separation isolates the sensitive gain circuitry from the vibration and electromagnetic fields of the massive transformers. This results in a much lower noise floor and a greater sense of blackness between musical notes.
How does the Xs 300 sound compared to the XA200.8?
While the .8 series is world-class, the Xs 300 offers a deeper level of tonal saturation and a more holographic 3D soundstage. It feels more effortless and "organic," providing a level of realism that positions it at the very top of the Pass Labs hierarchy.