Description of Operation

X1 Owner’s Manual

noise and distortion superiority of balanced signal, coloring what you eventually hear.

Pass labs through its unique patented “Supersymmetry” topology maintains the advantages of a true balanced signal throughout the electronics chain. The salient point of this approach affords significantly less signal manipulation, higher input impedance, as much as a 100:1 (20dB) reduction in distortion while providing greater gain, and twice the dynamic headroom of identical circuits running single ended.

The X1 maintains the integrity of its received signal by treating all sources internally as balanced signals and converts seamlessly between balanced and unbalanced inputs and outputs without any additional components in the signal path. This was a conscious effort by Pass Labs to enhance the consumer’s ability to integrate source components and power amps with otherwise incompatible requirements through a virtually transparent control center.

The rear mounted pair of five-way binding posts are intended to control the on/off function of our own X series power amplifiers from the X1’s front panel, or via the four button remote. When the preamp mode “Amp” is selected it allows the user to switch a nominal 12 volts DC at maximum draw of 50 milliamps to these binding posts. In some instances this voltage may have the ability to control products from other manufacturers, but we by no means have a comprehensive listing of their compatible features. If you have questions about compatibility, your service technician and dealer are an excellent source of information.

In application the X1’s front panel controls and alphanumeric display are quite straightforward and intuitive. We encourage you to become familiar with their operation prior to establishing any input connections with this unit. Experience indicates that engaging in

a few minutes of exploration and playtime will add much to your ultimate enjoyment of this exceptional Pass Labs product.

The Mode switch moves between 10 different functions. They are Volume, Input, Mute, Tape, Balance, Display, Mono, Unity, Amplifier (power amplifier turn on / turn off), and Gain adjust. Actuating the Mode “<” switch moves the display to the function one step to the virtual left and “>” button moves to virtual right, one step. The Select switch then alters the function of the displayed mode. The knob on the right is always the Volume control, and it is always active. The Select “^” button turns on a function or increases its value it is also balance right. The select “v” turns a function off or

X1 specifications

Pass Labs X1 is a high-end preamplifier that embodies the very essence of cutting-edge audio engineering, combining advanced technologies with superior craftsmanship to deliver an exceptional sonic experience. Known for its neutral and transparent sound signature, the X1 is designed to serve as the heart of a high-fidelity audio system, providing precise control over volume and input selection while ensuring signal integrity is maintained.

One of the defining features of the Pass Labs X1 is its fully differential architecture. This design not only enhances noise rejection but also minimizes distortion, resulting in a clean and accurate reproduction of music. The X1 employs a direct-coupled topology, allowing for a wider bandwidth and increased dynamic range, essential for capturing the subtleties of any audio performance.

The X1 also integrates a sophisticated power supply, utilizing separate transformer windings for the analog and digital circuits. This isolation reduces cross-contamination between sections, which is crucial for maintaining the integrity of the audio signal. The power supply is supplemented by high-quality capacitors and regulators, ensuring that the preamplifier operates with stable voltage and low noise.

In terms of connectivity, the Pass Labs X1 offers a comprehensive array of inputs and outputs, including balanced XLR and unbalanced RCA connections. This versatility allows it to interface seamlessly with a variety of sources and amplifiers, making the X1 suitable for both audiophile and professional environments. Additionally, the preamp features a remote control for added convenience, allowing users to adjust settings from a distance without compromising sound quality.

Another notable characteristic of the Pass Labs X1 is its rugged build quality. Constructed using high-grade materials and meticulously tested, the unit not only looks elegant but is designed to last, providing years of reliable performance.

Ultimately, the Pass Labs X1 is a testament to the brand's commitment to excellence in audio reproduction. Whether used in a dedicated listening room or as part of a professional setup, the X1 delivers a listening experience that is both immersive and true to the original recording, making it an invaluable component for any serious music enthusiast or audio engineer.