Pass Labs X350.8 Stereo Amplifier
Best high-power amplifier for discerning audiophiles seeking reference-grade sonic accuracy.
Experience unparalleled audio fidelity with the Pass Labs X350.8 Stereo Amplifier, the most powerful stereo amplifier in their lineup. Delivering 350 watts per channel in Class A/B, this amplifier prioritizes holistic design for a superior musical experience. It offers a superb and accurate representation of recordings, faithfully capturing the performance venue and the intricate layering of instruments. Designed for discerning audiophiles, the X350.8 provides exceptional sound quality and power, making it a centerpiece for any high-end audio system.
$7480.00
Owner Satisfaction
4.8
/ 5
Category Rank
168
/ 1684
#168 in Power Amplifiers
Price vs Category Average
-9%
Below average
Power Output
3508
/ W per channel into ohms
Who it's for
- Listeners driving demanding, low-impedance speakers requiring effortless power
- Collectors prioritizing long-term reliability and reference-grade industrial design
- Audiophiles seeking rich, musical, and highly resolving sound reproduction
Who should skip it
- Eco-conscious listeners concerned about high electricity consumption and utility costs
- Budget-conscious buyers seeking entry-level or mid-range audio components
- Users with limited rack space or poor room ventilation
Performance breakdown
Power Delivery
Effortlessly drives even the most demanding high-end speaker loads.
Sonic Transparency
Reveals intricate recording details with remarkable clarity and natural warmth.
Soundstage Depth
Creates a vast, three-dimensional space that mimics the original performance venue.
Build Integrity
Massive chassis construction ensures long-term stability and vibration resistance.
Dynamic Range
Handles sudden musical transients with poise and authoritative control.
System Integration
High input impedance allows for seamless pairing with diverse preamplifiers.
Key Specs
Power Output
350W per channel into 8 ohms
Number of Channels
2
Amplifier Class
Class AB
Frequency Response
1.5 Hz - 100 kHz
Input Impedance
50 kohm (Single Ended), 100 kohm (Balanced)
Gain
26 dB
Total Harmonic Distortion
1%
Weight
127 lbs
Features
- Exceptional 350W per channel power output
- Class A/B amplification for warm, detailed sound
- Holistic design enhances musical experience
- Accurate soundstage and instrument layering
- Premium build for lasting performance
- Faithful reproduction of recordings and venue acoustics
- Designed for discerning audiophiles
- Immersive and realistic listening experience
What customers say
This reference grade amplifier earns ecstatic praise for its exceptional sonic performance. Owners consistently note its masterful sound signature, blending organic warmth with immense dynamic control. The audio experience is described as effortless, featuring an expansive soundstage and superb textural detail that encourages long listening sessions without fatigue. A key highlight is the amplifier's superior ability to grip and control demanding loudspeakers, especially in the low frequencies. Furthermore, the meticulous, heavy-duty build quality reinforces its status as a long-term investment. While the unit runs hot, the profound sonic rewards solidify its position as a destination component for serious audiophiles.
Know before you buy
With 350 watts per channel, this amplifier is designed to drive almost any loudspeaker, including those with demanding impedance loads. It excels with high-end floorstanding speakers that require significant current to maintain control and dynamics.
The X350.8 utilizes a Class A/B topology to balance the warmth and harmonic richness of Class A with the efficiency and power required for high-output demands. This results in a detailed, musical sound that remains composed even during complex, high-volume passages.
The X350.8 supports both, offering an input impedance of 100 kohm for balanced connections and 50 kohm for single-ended. While both provide excellent performance, balanced connections are generally recommended to minimize noise in long cable runs.
Due to its substantial weight and dimensions, you must ensure your equipment rack or stand is rated for heavy-duty use. Additionally, the unit generates heat during operation, so it requires adequate ventilation space around the sides and top to maintain optimal performance.
The amplifier is engineered for high-fidelity accuracy, which allows it to preserve the spatial cues of the original recording. It excels at defining the boundaries of the performance venue and clearly separating individual instruments within the mix.
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