Pass Labs 1INT-30A guide

INT-30A Owners Manual

So the amplifier is sitting there unconnected.

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

Please note that this switch is not a “safety device” or “emergency disconnect” for this product. This switch does not provide personal shock protection in the manner of a ground-fault interrupter, nor is it intended to. One more reason why it is important not to defeat the Earth connection of your power cord. Safety or Emergency disconnect involves removing a power cord, we feel that this is the most positive and safest solution.

On the front panel, the “power” LED indicator should be glowing blue, indicating that AC power is available and the capacitor banks are charged. If the “LED” is not glowing blue, then cycle the front panel power button to “on” and turn the volume control just to verify operation.

Now turn off the front and rear power switches and unplug the AC power cord from the wall while you connect the speakers and inputs. Amplifier output terminals and speaker terminals will be electrically live when the amplifier is on.

Check to make certain that the loudspeaker cables aren’t shorted at the loudspeaker end, and then 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 pin 3 is inverted (negative) input. Pin numbers are marked on the XLR. If you re-install the jumper incorrectly or leave it lying about, the amplifier will not work properly, and you will be able to tell.

1INT-30A specifications

Pass Labs is renowned for its high-quality audio equipment, and the Pass Labs 1INT-30A integrated amplifier exemplifies the company's commitment to excellence. This amplifier is designed for audiophiles seeking a blend of superior sound quality, innovative technology, and robust build.

At the heart of the 1INT-30A is its powerful Class A amplifier topology, which is one of the distinguishing features of Pass Labs products. Class A operation is known for its linearity and minimal distortion, providing a warm and natural sound. The 1INT-30A is capable of delivering 30 watts per channel into 8 ohms, which might seem modest compared to high-powered amplifiers, but the purity of the sound is where it shines. This amplifier can also drive speakers with lower impedances effectively, making it versatile for various audio setups.

One of the standout technologies featured in the 1INT-30A is its Fully Balanced Differential Circuitry. This design helps to minimize noise and interference, ensuring that the audio signal remains clear and accurate from input to output. This attention to detail in the circuit design is instrumental in delivering the pristine sound quality that Pass Labs is known for.

In addition, the 1INT-30A incorporates a high-quality volume control that ensures precise adjustments. The volume is not only easy to operate but also designed to maintain sonic integrity across its range, allowing users to enjoy dynamic performances with minimal compromise.

Another important aspect of the 1INT-30A is its exploitation of minimalist aesthetics combined with sturdy craftsmanship. The amplifier is housed in a beautifully crafted chassis with a front panel that is both elegant and user-friendly. The build quality reflects the high standard typical of Pass Labs, with an emphasis on longevity and reliability.

Connectivity options on the 1INT-30A include multiple analog inputs, allowing for integration with various audio sources like CD players and turntables, which makes it highly adaptable for different audio setups. The inclusion of a high-quality headphone output also adds to its versatility, catering to listeners who prefer private listening experiences.

In summary, the Pass Labs 1INT-30A represents a harmonization of innovative technology and superior sound engineering. From its powerful Class A output to its Fully Balanced Differential Circuitry, every aspect of the amplifier contributes to an exceptional listening experience. With elegant design and meticulous craftsmanship, the 1INT-30A is a testament to Pass Labs' dedication to producing high-fidelity audio equipment that satisfies the exacting demands of audiophiles.