Pass Labs X1 Manual De Usuario

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X1 Owner’s Manual

The X1 is an ultra high quality minimalist audio preamplifier that 
features a remote control and external power supply.  It combines 
a completely new circuit topology with traditional construction 
representing thirty five years of  amplifier design.

This preamplifier flows from a commitment to create the best 
sounding product: a simple circuit with the most natural sonic 
characteristics.  Derived from US Patent # 5,376,899, the X1 
integrates power MOSFET  and JFET devices in a simple Class A 
topology in order to deliver the finest sound possible.

The patent-pending Super-Symmetric gain circuitry is unique in 
providing superior flexibility and performance with both balanced 
and unbalanced inputs and outputs, converting one to the other as 
desired without extra circuitry and without performance degradation.

The X1 minimizes the number of  components in the signal path, 
and yet retains exemplary objective performance specifications.  It 
pushes the edge of  the art in exploring how much subjective quality 
is obtainable with a new but very elementary gain stage. 

  The X1 employs a new type of  volume control that offers an order 
of  magnitude better performance than seen before in an electronic 
control.  It provides over 60 dB of  range, large voltage swing and 
very good measured performance.  Most importantly it is subjectively 
outstanding; better than any potentiometer we know of. We are 
justifiably proud of  this new device, which is registered as having a 
patent pending.

  Very few people are involved in the production of  this product.  I 
supervise all phases of  the construction, and I test each preamplifier 
myself.  If  you have questions, comments, or problems, please feel 
free to contact me directly.

  Thank you for purchasing this preamplifier.  It is my sincere hope 
that you will enjoy its sound as much as I do.           

Vice President, Design