Pass Labs 1INT-30A manual

INT-30A Owners Manual

the distortion as identical as possible on both polarities of the balanced output.

It is easier to make distortions in the two halves more identical than to remove them with feedback, and this is the operating principle of X amplifiers.

Since the X1000, Pass Labs products have continuously evolved toward higher performance. The Class AB “X” series was joined by the Class A “XA” amplifiers. Subsequent improvements to the Class AB “X” amplifiers resulted in the “X.5” products, and their phenomenal success has led to the Class A “XA.5” series.

As always the goal has been the best musical and objective performance possible with minimal parts in the signal path and minimal feedback. This process is not completely quantified, and many of the improvements are the result of trial and error and extensive listening.

Measurement of performance is important to us, and we feel that well- designed product sounds good and measures good. Apparently it is possible to make an amplifier which measures well but which does not please the ears, and so we let our ears be the final judge.

The X amplifiers deliver more output power per dollar, and the XA amplifiers have a better subjective performance. All of the amplifiers drive known loudspeaker loads without misbehaving, and all are unconditionally stable into low impedance and reactive loads.

All the usual performance metrics - power, distortion, noise, input impedance, damping factor and bandwidth have all been improved in this latest generation. The power supplies are larger, with fast rectifiers gating to larger capacitor banks. The increases in AC line noise worldwide have been addressed with heavier EMI filtering and dramatically quieter power transformers. In addition, through improved biasing regulation, the circuits give much more consistent performance under varying AC line voltages and over a variety of ambient temperatures.

All this is very nice, but only if it improves your listening experience. We listen very carefully and critically to our amplifiers with a wide variety of associated equipment and we take our time with it. Musical performance is most important, and is the basis of our success over the years.

It’s true that we also value the other things. The design and manufacturing decisions have to balance subjective performance against reliability, cost, specs, and ego (in approximately that order). That is why we make more than one amplifier, but all are built with the same commitment to quality.

The Pass Laboratories INT-30A Integrated Amplifier was designed specifically to bridge the gap between so called high-end audiophile product and the need for a simple “no nonsense”, convenient, user-friendly, high

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.