Product Philosophy Other Design Comments | Pass Labs X2.2 instruction

Product Philosophy

Other Design Comments

X2.2 Owner’s Manual

assuring precise level steps and high common-mode rejection in balanced circuits. Wayne Colburn’s exceptional volume control, in conjunction with the unique LED display, gives the user the ability to replicate volume levels with absolute accuracy in steps of roughly 3dB.

1)Circuit simplicity and a minimum number of components is a key element. The fewer parts in series with the signal path, the better. Adding more parts and gain stages may improve measured specs, but will seldom improve the perceived sonic quality or reliability of a product.

2)The characteristic of gain devices and their specific use is important. Individual variations in performance between like devices are important, as are differences in topological usage. All signal bearing devices contribute to the degradation, but there are some different characteristics that are worthy of attention. For example, smooth low order nonlinearities are additive in quality, bringing false warmth and coloration, while abrupt high order nonlinearities add harshness and false brightness.

3)Maximum intrinsic linearity is desired. This is the performance of the gain stages before feedback is applied. Experience suggests that feedback is a subtractive process; it removes information from the signal. In many older designs, poor intrinsic linearity has been corrected by large application of feedback, resulting in loss of warmth, space, and detail. The trick is to get good performance without this excessive reliance on feedback.

The art of high end audio design lies in the approach of combining these elements to get high reliability and simplicity, high quality measured performance, and high quality subjective performance. It takes imagination and hard work to get as much of these as possible at once without trading them off against each other.

We recommend the use of the balanced output mode where possible. It will retain the character of the input mode, but offers less distortion, less noise, more gain, and more voltage swing, without compromising the sound.

With balanced operation, the common-mode rejection of the preamp reflects the intrinsic common-mode rejection of the topology, the matching of the gain devices, and the matching of the attenuator channels. In this case we have been able to keep

X2.2 specifications

The Pass Labs X2.2 is a distinguished line-level preamplifier that showcases the meticulous engineering and design philosophy of Pass Labs. Renowned for its exceptional performance and sonic fidelity, the X2.2 is a favorite among audiophiles who demand the best in audio reproduction.

One of the key features of the X2.2 is its fully balanced differential design. This architecture minimizes noise and distortion by employing a symmetrical signal path. The outcome is an incredibly clean signal that retains the integrity of the audio source, ensuring that music is reproduced in its most authentic form. With both balanced XLR and single-ended RCA inputs and outputs, the X2.2 offers versatility in connecting a variety of audio components.

The X2.2 integrates Pass Labs’ proprietary technology, which includes a high-quality power supply featuring a toroidal transformer. This transformer design not only provides efficient energy distribution but also reduces electromagnetic interference, leading to a more stable and noise-free performance. The power supply is critically important in the overall sonic presentation of the preamplifier, and Pass has taken extra steps to ensure it’s top-notch.

Another notable aspect of the X2.2 is its zero feedback design, which enhances the preamplifier’s transparency and dynamics. By avoiding feedback mechanisms that can mask subtleties in sound, the X2.2 excels in reproducing the most delicate nuances of music, allowing listeners to engage deeply with their favorite recordings.

The build quality of the X2.2 is exceptional. It features a robust chassis that is both visually appealing and functionally effective in minimizing vibrations. The front panel is sleek and straightforward, with a minimalist aesthetic that appeals to modern sensibilities. Additionally, the unit is designed for ease of use, making it simple to navigate through its various input options.

In conclusion, the Pass Labs X2.2 is more than just a preamplifier; it is a masterful blend of innovative technology, timeless design, and high-fidelity audio performance. Its balanced design, high-quality power supply, and zero feedback architecture set it apart from competitors, making it an excellent choice for those seeking an unparalleled listening experience. Whether for critical listening or casual enjoyment, the X2.2 delivers sound that inspires and captivates, embodying the essence of high-end audio.