X1000.5 Owners Manual

Previously these kinds of simple Class A circuits have been popular for their sound quality in low power amplifiers, but have not found application at high power levels due to excessive distortion and low efficiency. Supersymmetry™ overcomes this barrier, delivering the sweetness, staging, and detail of very simple circuitry up to kilowatt power levels and beyond.

The X.5 Series amplifiers have the tremendous dynamic range (>140 dB) to do justice to the high-resolution digital recordings of the 21st Century and the elegance to retrieve the micro dynamics offered by the most sensitive loudspeakers. The simple but powerful circuitry moves easily from total silence to explosive transient and back to silence without a trace and without information loss. Very unlike conventional high power amplifiers, they provide this level of power with a subtlety befitting some of the better tube amplifiers. This per- formance is consistence across the audio spectrum and the amplifiers are unconditionally stable into all speaker loads.

So relax and enjoy your amplifier. Call us if you ever have a problem or question. You are welcome to ask questions or offer comments. Thank you for buying our product.

3

Page 2 Page 4
Page 3
Image 3
Pass Labs X1000.5 owner manual
Page 2 Page 4

X1000.5 specifications

Pass Labs X1000.5 is a high-performance power amplifier that has earned a stellar reputation among audiophiles and sound engineers alike for its exceptional sound quality and robust design. Created by renowned audio engineer Nelson Pass, the X1000.5 exemplifies the fundamental principles of Pass Labs: simplicity, purity, and musicality.

At the core of the X1000.5's capabilities is its Class A operation, delivering 1000 watts of power into 8 ohms and effectively doubling that into 4 ohms. This Class A architecture ensures minimal distortion and a linear response, allowing for an incredibly accurate reproduction of sound across the entire frequency spectrum. The soundstage is wide and immersive, enabling listeners to discern subtle details in both music and vocal performances.

One of the standout technologies employed in the X1000.5 is the use of a complementary output stage consisting of high-speed MOSFETs. This allows the amplifier to manage high instantaneous current demands without sacrificing control or transparency. The use of MOSFETs also contributes to a warm and engaging sonic signature that is characteristic of Pass Labs' designs. The amplifier’s circuitry is designed with an emphasis on low negative feedback, which further enhances the natural sound quality.

The build quality of the X1000.5 is equally impressive. Housed in a robust chassis designed to minimize resonance and electromagnetic interference, the amplifier features a dual-mono configuration with separate power supplies for each channel. This not only provides ample power but also ensures channel separation and coherence in sound reproduction. It also incorporates high-quality components such as low ESR capacitors and a custom-made toroidal transformer, which contributes to its excellent performance.

Additional features include an easy-to-use input stage that supports both balanced XLR and single-ended RCA connections, making it compatible with a wide range of source components and speaker systems. The X1000.5 is also equipped with protection circuitry that prevents over-temperature and over-current situations, safeguarding both the amplifier and connected speakers.

In summary, the Pass Labs X1000.5 is a masterful blend of power, precision, and artistry. With its Class A operation, advanced MOSFET technology, solid build quality, and user-friendly features, this amplifier is a compelling choice for audiophiles seeking to elevate their listening experience to new heights.
Top Page Image Contents