PASS LABS X250.8

The price change with the finish 

The Pass Labs X250.8 immediately stands out for its aesthetics and advanced engineering.

Although it is a Class AB stereo amplifier with a power output of 250W at 8 Ohms (doubling to 4 Ohms), Nelson Pass chooses to operate the first 16W in pure Class A, ensuring exceptional sound quality even at low volumes.

Nelson Pass’s design philosophy does not focus on minimizing distortion to the absolute lowest level but rather on reducing higher-order distortion components, such as fourth-order harmonic distortion (K4) and intermodulation distortion, which can compromise the naturalness of the sound. The use of lower negative feedback, combined with higher Class A bias and a reduced number of gain stages, results in a more transparent and engaging musical reproduction.

A key feature of the X250.8’s circuitry is the patented Supersymmetry circuit, which further reduces distortion by creating mirrored anti-phase signals, maximizing distortion cancellation at the balanced output.

Tonally, the X250.8 delivers a rich and full-bodied performance, with a slight emphasis in the upper bass to midrange transition, providing a fuller and more immersive sound.

The Pass Labs X250.8 embodies Nelson Pass’s sonic philosophy: a balance of power, refinement, and musicality, capable of delivering an authentic and emotionally engaging listening experience.

Technical Specifications:

• Class: AB
• Type: Stereo
• Gain: 26 dB
• Full Power Gain @ 26 dB: 2.24 V
• Low-Frequency Response: 1.5 Hz
• High-Frequency Response: 100 kHz
• Power per Channel at 8 Ohms: 250 W
• Distortion (1 kHz, full power): 1%
• Input Impedance: 50 kΩ (SE) / 100 kΩ (BAL)
• Damping Factor: 150
• Output Noise: 200 µV
• Idle Current Draw: 3.4 A
• Power Consumption: 450 W
• Operating Temperature: 53°C
• Number of Chassis: 1
• Dimensions (W x D x H): 48.3 x 54 x 22.9 cm
• Weight: 45.4 kg