So the amplifier is sitting there unconnected

XA160.5 Owner’s Manual

So the amplifier is sitting there unconnected.

Make sure that the rear panel power switch/breaker is off (down). Plug the AC cord into the back of the amplifier, and then into the wall. Then turn the power switch/breaker on (up). The lights in your house will dim for a moment as the power supply charges the capacitors.

If your amplifier uses a circuit breaker and not a fuse, please note that this circuit breaker is not a “safety device” or “emergency disconnect” for this product. It will provide current limiting which will protect the amplifier, but it does not provide personal shock protection in the manner of a ground-fault interrupter. One more reason why it is important not to defeat the Earth connection of your power cord.

On the front panel, the “Standby” LED indicator should be glowing blue, indicating that AC power is available and the capacitor banks are charged. If the “Power” LEDs are lighting the meter, use the front panel stand-by button to go to stand-by mode.

Now turn off the rear power switch and unplug the AC power cord from the wall while you connect the speakers and inputs.

Check to make certain that the loudspeaker cables aren’t shorted at the loudspeaker end, connect speaker cables to the output binding posts on the amplifiers, observing correct polarity. The output binding posts will accept either bare wire or spades. (Regulatory agencies in many countries have banned binding posts that will accept a banana plug, forcing us to abandon this option.) Make sure that your speaker wires only attach to the outputs of the amplifier, not to each other and never to the amplifier case.

Remember the warning about treating the output connections as ground, particularly if you are using a powered subwoofer with this amplifier. If you need a ground, use the one provided specifically on the rear panel of the amplifier.

The amplifier may be driven single-end or balanced, your choice. Single-ended input will always occur through the RCA connector and balanced input will always occur through the XLR connector.

Again, if you drive the amplifier single-ended then leave the supplied jumpers in place between pins 1 & 3 on the input XLR.

On the XLR connector pin 1 is ground, pin two is positive input and

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.