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XA160.5 Owner’s Manual

X amplifiers run at about the same power as their output rating, and XA amplifier run more than twice that. The heat sinks on the side of the amplifier run hot to the touch – about 25 to 30 degrees C. above ambient, so you can expect 50 to 55 degrees C. temperatures on the heat sinks. It is very important to the long life of the amplifier that they get good ventilation.

You can put this amplifier anywhere you want, but it must have good ventilation. Do not place it in enclosed cabinets or small closets without means for air to circulate freely. Stacking these power amplifiers directly upon each other is not recommended for the same reason. You should have a minimum of about 6 inches clearance to the top and sides for adequate air circulation.

When not actually intending to play music the amplifier should be left in standby mode, where it draws only a few watts of bias on the output stage. If you wish to reduce the power draw to 0, you can shut the amplifier off via the rear panel switch, however we recommend that for minimum noise this switch should be toggled in stand-by mode.

We have provided a standard IEC power cord that fits into the standard 15 amp IEC receptacle at the rear of the amplifier chassis.

With the exception of the largest of the X and XA series, there is no difficulty running two amplifiers on a single 15-amp circuit. Given the high current draw, we generally do not recommend active line conditioners, although they are unlikely to damage the amplifier.

This amplifier is equipped for operation with an earth ground provided by the users AC outlet. Never defeat this ground connection. The signal ground of this amplifier is connected to earth through a power thermistor, which provides a safety ground but provides isolation from system ground loops.

For maximum safety we suggest that the power cord should be the last cable installed on your power-amplifier. You may, if you wish, substitute a 15-amp aftermarket power cord for the one we have supplied. Only use power cords, which meet all local safety standards and carry acceptance marks from the local regulatory authority. The power cord should be attached to the amplifier prior to plugging into house power. Place the rear mounted switch in the off (down) position before plugging in this amplifier.

1XA160.5 specifications

Pass Labs, renowned for its high-performance amplifiers, has made waves with its 1XA160.5 power amplifier. This product epitomizes the brand's commitment to sonic excellence, technical sophistication, and exceptional build quality. Emphasizing a pure, uncolored sound, the 1XA160.5 offers audiophiles a window into the heart of their music.

At the core of the 1XA160.5 is its innovative single-ended Class A design. This architecture allows the amplifier to deliver a lush and natural sound characteristic, which is the hallmark of Pass Labs’ engineering philosophy. Being Class A means that the amplifier operates in its linear range at all times, resulting in minimal distortion and an incredibly rich audio experience. With a power rating of 160 watts per channel at 8 ohms and 320 watts at 4 ohms, the 1XA160.5 provides ample power to drive even the most demanding speakers.

One of the defining technologies of the Pass Labs 1XA160.5 is its use of a high-current, high-performance output stage. This design allows the amplifier to maintain dynamic control even at high volumes, ensuring that transient peaks are handled effortlessly. Coupled with a robust power supply which features a large transformer and substantial capacitance, the 1XA160.5 guarantees high performance across a wide dynamic range.

Furthermore, the 1XA160.5 is built with an emphasis on thermal management, utilizing efficient heat sinks that allow the amplifier to maintain optimal operating temperatures during extended listening sessions. Its solid aluminum chassis not only adds to its aesthetic appeal but also enhances structural integrity, minimizing microphonics and unwanted vibrations.

The 1XA160.5 amplifier is equipped with a set of balanced XLR and unbalanced RCA inputs, ensuring compatibility with various source components. It also features proprietary circuitry that enhances feedback stability and optimizes distortion performance, contributing to a cleaner, more accurate sound reproduction.

In summary, the Pass Labs 1XA160.5 power amplifier stands as a testament to the brand's dedication to authentic audio playback. With its Class A design, high-current output stage, exceptional build quality, and superior thermal management, it offers audiophiles a compelling option for achieving an unparalleled listening experience. The 1XA160.5 is not just an amplifier; it is a bridge to the emotional core of your music.