Setup

X0.2 Owner’s Manual

The pre-amplifier consists of three machined aluminum chassis; it has five sets of input connections, two sets of outputs, both single- ended and balanced, a tape loop and a full function remote control unit that mirrors the front panel functions.

The power supply control chassis has a 5-way binding post that is used for remote amplifier turn-on. The pre-amplifier’s voltage and current rating are indicated by the affixed tag on the bottom of the pre-amplifier’s power supply control chassis. This tag will indicate either 240 volts, 220 volts, 120 volts, or 100 volts. A 0.5 amp 3AG slow blow fuse is provided with 100-120 volt units, and a 0.25 amp slow-blow fuse is provided with 220-240 volt units. The frequency rating of the X0.2 power supply is 50 to 60 Hz. This pre-amplifier typically draws 30 watts during operation. Please verify that the input power rating as indicated on your unit is consistent with that supplied in your area before attempting hook up.

The remote control is powered by two (2) factory installed AAA batteries.

The individual gain channels connect to the power supply control unit with four (4) necessary cables and to each other with one optional cable. These cables must be installed before the preamp is powered up. The cable jacks are clearly labeled on the rear of each chassis and are style and gender specific so as to minimize opportunity for mis-connection.

Both gain channels are identical electrically, the only difference is the color of the identifying rings under the RCA connectors. The right channel is identified by red rings under the RCA’s connectors and the left by white rings. Additionally the right gain stage chassis has a female XLR marked “mono” and the left gain control chassis has a male XLR marked “mono” as a further identifier.

The X0.2 takes maximal advantage of four identical gain paths (two identical paths per channel) very much unlike the typical two gain path (one signal path per channel) pre-amplifier you may be familiar with. Almost without exception traditional consumer audio pre-amplifiers, unlike their science and industry counterparts have maintained a single signal path per channel (two identical aths in a stereo pair).

In order to manage balanced signals these two gain path pre- amplifiers must utilize phase combining networks to process incoming signals and subsequently drive outputs via phase splitting circuits to re-establish a quasi-balanced signal. This manipulation of

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Pass Labs pre-amplifier owner manual Setup
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pre-amplifier specifications

Pass Labs, an esteemed name in the realm of high-fidelity audio equipment, has garnered a reputation for producing premium amplifiers and pre-amplifiers designed for audiophiles who crave exceptional sound quality. Among its acclaimed offerings is the Pass Labs pre-amplifier, a device that captures the essence of music reproduction with unparalleled precision and clarity.

One of the defining features of Pass Labs pre-amplifiers is their use of a fully balanced differential circuit topology. This design significantly reduces common-mode noise, preserving the integrity of the audio signal and ensuring that the listener experiences sound as it was intended to be heard. This topology is especially effective in eliminating distortion and improving dynamic range, hallmarks of a quality audio experience that Pass Labs strives to deliver.

The pre-amplifier is equipped with premium-grade components, including high-quality capacitors and resistors, which are crucial for maintaining signal purity. These components contribute to the overall fidelity of the sound, allowing for rich, detailed reproduction across a wide frequency range. Additionally, the circuit design is optimized for low noise and low distortion, ensuring that even the most subtle nuances of music are faithfully rendered.

Another standout characteristic of the Pass Labs pre-amplifier is its seamless integration with various audio sources. With multiple input options, including XLR and RCA connectors, the pre-amplifier accommodates a variety of devices, from turntables to digital players. This versatility makes it an ideal choice for audiophiles with diverse audio setups, ensuring compatibility regardless of the source.

To enhance user experience, Pass Labs incorporates intuitive controls and a user-friendly interface, allowing for easy adjustments and monitoring of audio settings. Features such as a built-in volume control and selectable input sources provide convenient options for users, ensuring a streamlined listening experience.

Moreover, the robust build quality of Pass Labs pre-amplifiers exudes a sense of durability and sophistication. The solid chassis and meticulous attention to detail not only serve to protect the internal components but also reduce external vibrations that could interfere with sound performance.

In conclusion, the Pass Labs pre-amplifier stands as a prime example of engineering excellence in high-fidelity audio. With its balanced differential circuit topology, premium components, and user-friendly features, it is designed to meet the discerning demands of audiophiles. Whether in a home listening environment or a professional setting, the Pass Labs pre-amplifier promises to deliver an extraordinary audio experience that brings music to life.
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