Amplifier Reviews

Pass Labs Xs Preamplifier and Xs 300 Pure Class A Monoblock Power Amplifiers

ARTICLE INDEX

Best of 2013 Awards

Introduction

Pass Labs recently introduced their new Xs Preamplifier and XS 300 Pure Class A (300 watts) monoblock power amplifiers. They are a completely new design compared to their previous components, and have a sound that is almost beyond description in words.

Xs PREAMPLIFIER SPECIFICATIONS

  • Design: Solid State Stereo Preamplifier
  • Configuration: Two Chassis, Dual Mono
  • Circuit: Two Gain Stages Biased into Pure Class A
  • Inputs (Each has Choice of XLR or RCA): Five (One is Pass-Through)
  • Outputs (Each has Choice of XLR or RCA): Three (Two Master and One Slave), One Set for Tape In and Tape Out
  • 12 Volts Remote Power On Jacks
  • Power Supply: 100 VA Transformer, 100,000 µF Capacitance per Channel
  • Dimensions (Each Chassis): 7" H x 19" W x 19" D
  • Weight: 50 pounds Total
  • MSRP: $38,000 USD
  • Pass Labs
  • Tags: Pass Labs, Preamplifiers, Monoblocks, Power Amplifiers, Class A, Audio, Stereo

Xs 300 POWER AMPLIFIER SPECIFICATIONS

  • Design: Solid State Mono Power Amplifier
  • Configuration: Two Chassis
  • Power Output: 300 Watts into 8 Ohms, 600 Watts into 4 Ohms
  • Input Impedance: 200 kOhms XLR, 100 kOhms RCA
  • Power Supply: 2 KVA Transformer, 400,000 µF Capacitance (16 x 25,000 µF)
  • Dimensions (Each Chassis): 11.5” Hx 19” W x 27.5” D
  • Weight: Control (Top) Chassis: 130 Pounds; Current Source (Bottom) Chassis: 168 Pounds
  • MSRP: $85,000/pair USD
  • Pass Labs
  • Tags: Pass Labs, Preamplifiers, Monoblocks, Power Amplifiers, Class A, Audio, Stereo