Position and adjustment

need to attach to the positive terminals of the power-amplifier. The negative speaker terminals on both pairs of speakers need to attach to the negative terminals of the amplifier. Maintaining proper signal polarity is critical with all bi-wired speakers. Failure to maintain consistent polarity between the speakers and amplifier will be cause all manner of ills from collapsed and diffuse soundstage to greatly marginalized frequency response. If bi-amping with a combination of inverting and non inverting power amplifiers then take care to wire speakers in correct acoustic rather than correct electrical polarity. (NOTE: Pass Laboratories amplifiers historically are all non-inverting designs.)

It is difficult to provide absolute instructions for speaker placement; but we can give suggestion as to good starting points. Optimal results with the SR-2 as with most speakers are frequently achieved with subtle changes of physical location.

Rule of the first however is that the room in which you listen is perhaps the most significant of all audio components in the reproduction chain. Speakers can be made to work satisfactorily in poor sounding rooms, but it is much easier to achieve success in an acoustically correct room.

The ideal room is neither overly reflective nor overly absorptive. In a good sounding room, the absorptive elements tend to be at reflection points of the sidewalls, floor, ceiling and space behind the speaker. High ceilings or at least absorptive ceilings lend themselves to more natural sounding spaces. Reflective floors, while not ideal are less disruptive typically than highly reflective ceilings.

SR2 Owners Manual

Rev 0.2

SR2 specifications

Pass Labs SR2, the latest addition to the highly respected Pass Labs family of high-fidelity audio components, has made a significant impact on the audiophile community. This stunning piece of engineering represents a continuation of the brand’s commitment to delivering an unparalleled listening experience through cutting-edge technology and thoughtful design.

The SR2 is a stereo power amplifier that boasts a robust power output, enabling it to drive a wide range of speakers with ease. With an output rating of 200 watts per channel into 8 ohms and 400 watts per channel into 4 ohms, the SR2 is built to handle complex musical passages while maintaining clarity and dynamic range. This power capability is complemented by an impressive current delivery, ensuring that it can manage even the most demanding loads.

One of the standout features of the SR2 is its use of the unique Pass Labs Class A amplifier topology. The design minimizes crossover distortion and preserves the natural harmonic richness found in music. By operating in Class A mode, the SR2 delivers a warm, inviting sound characteristic that is often sought after by audiophiles.

The SR2 also incorporates advanced circuit technologies, such as the fully complementary output stage and a high-speed feedback mechanism. This allows for a refined response across the frequency spectrum, resulting in low levels of distortion and a high degree of linearity. The result is a soundstage that feels expansive and immersive, with an incredible sense of space around instruments and vocals.

Aesthetically, the SR2 carries the hallmark design elements of Pass Labs, featuring an aluminum chassis with a distinctive brushed finish. The elegant front panel includes a simple yet functional control interface, making it easy for users to operate. Additionally, the amplifier is equipped with premium components throughout, including top-quality capacitors and resistors, which adhere to Pass Labs' high standards for performance and reliability.

Thermal management is another crucial aspect of the SR2's design. The ample heat sinks ensure that the amplifier remains cool during operation, promoting longevity and consistent performance. The unit also offers a standby mode, conserving energy when not in active use without sacrificing sound quality.

In summary, the Pass Labs SR2 is a remarkable amplifier that brings together power, precision, and artistry. Its advanced technologies and thoughtful engineering make it a compelling choice for both audiophiles and music lovers alike, ensuring that every listening session is a memorable experience. Whether you're listening to the delicate nuances of a string quartet or the thunderous depths of a rock concert, the SR2 is designed to deliver a truly captivating performance.