Pass Labs - XS 150 - Monoblock Power Amplifier & Power Supply - Pair

The XS 150 monoblocks are designed for listeners seeking true reference-level performance without sacrificing warmth, texture, or musical engagement. They combine the richness and tonal beauty of classic Class A amplification with the speed, control, and refinement expected from a modern flagship design.

Each XS 150 amplifier uses a dedicated dual-chassis configuration consisting of a separate amplifier chassis and external power supply chassis. This design helps reduce noise, improve stability, and maintain effortless composure even with demanding recordings and extended listening sessions. Its powerful Class A output stage delivers exceptional control and timing while preserving a relaxed, natural presentation.

What makes the XS 150 especially compelling is its ability to handle dynamic contrast with complete ease. Quiet passages feel intimate and immersive, while larger musical swings arrive with scale and authority without becoming aggressive. Bass gains greater definition and grip, yet the midrange remains rich, spacious, and emotionally engaging throughout.

Available in Silver or Black finishes.

FEATURES

• Pair of Pure Class A Monoblock Amplifiers
• Separate Amplifier and Power Supply Chassis
• 150 Watts Each @ 8 Ohms
• Exceptional Tonal Richness and Control
• Balanced and Single-Ended Inputs
• Massive Output Stage with 112 Devices per Channel
• Designed and Manufactured in the USA

SPECIFICATIONS

• Class: A
• Type: Monoblock Power Amplifiers
• Gain: 26 dB
• Inputs: XLR / RCA
• Power Output: 150 Watts Each @ 8 Ohms
• Output Devices: 112 per Channel
• Power Consumption: 700 Watts
• Standby Power Consumption: <1 Watt
• Configuration: Separate Amplifier and Power Supply Chassis
• Dimensions: 19”W x 21.5”D x 11”H (Each Chassis)
• Weight: 102 lbs / 132 lbs