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SMc Audio VRE-1 manual Grounding Options

Models: VRE-1

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Grounding Options

Your VRE-1 provides several options for matching earth ground arrangements for best results with your system. A binding post connected to circuit ground is provided on the rear panel to facilitate external connections to other equipment chassis grounds if need be, and an adjustable ground jumper is provided inside the power supply. This jumper provides 3 options for the connection between earth ground and circuit ground: A) isolated connection via an RC network consisting of a 100 Ohm resistor in parallel with a .01uF capacitor, B) direct (zero-ohm) connection, and C) no connection. (Please note that the use of a 3- wire grounded AC cord assumes that an appropriate earth ground connection is provided by your house AC wiring.)

The VRE-1 is shipped with this ground jumper set in the (A) isolated position. This seems to work well in most circumstances, but you should experiment with the jumper setting if you are experiencing any hum and/or buzz issues.

Locate the jumper by unplugging your power supply first for safety, then removing the top 2 screws on either side of the cover (4 screws total). Remove the cover by lifting it straight up. The ground jumper is located near the front edge of the main circuit board, near the LED wire (see the photo below). Change the jumper position by pulling it straight up (use your fingers or some small pliers) and moving it to the alternate setting. The header has 3 pins, and the jumper covers 2 at a time (the center pin is always used). The left side (as seen in the photo) is position “A” and the right side is position “B”. The jumper may be removed completely for setting “C” (no connection).

Note: You will see several other jumpers in the power supply, but do NOT move them. These are factory-set for proper operation of your VRE-1.

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SMc Audio VRE-1 manual Grounding Options
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VRE-1 specifications

SMc Audio VRE-1 is a high-performance vacuum tube preamplifier that exemplifies the art of audio engineering, with a focus on delivering exceptional sound quality and versatility. This preamplifier is designed for the discerning audiophile who values both the warmth of analog sound and the precision of modern technology.

One of the standout features of the VRE-1 is its fully balanced design, which not only minimizes noise and distortion but also enhances the dynamic range of audio signals. This configuration makes it an ideal choice for both professional studios and high-end home audio systems. The balanced architecture ensures that signals maintain their integrity over long cable runs, preserving detail and clarity.

The VRE-1 incorporates premium quality components, including hand-selected vacuum tubes that contribute to its rich, organic sound. The use of high-quality capacitors and resistors further enhances its audio performance, allowing for a wide frequency response that captures every nuance of the original recording. The carefully crafted circuit topology is designed to achieve a smooth frequency response while minimizing phase distortion, delivering a natural and engaging listening experience.

In terms of connectivity, the VRE-1 is equipped with multiple inputs and outputs, including XLR and RCA connections. This versatility allows it to integrate seamlessly into various audio setups, whether you're connecting it to a power amplifier, digital sources, or other components. The unit also features a remote control, adding convenience to the listening experience.

An additional highlight of the VRE-1 is its adjustable gain settings. Audiophiles can easily customize the output level to match their source components, ensuring optimal performance and synergy within any system. This feature is particularly beneficial for users with a diverse range of source equipment, allowing for tailored sound reproduction without compromise.

SMc Audio has also placed a strong emphasis on aesthetics, with the VRE-1 showcasing a classic design that complements any audio environment. The solid chassis and premium finish not only contribute to its durability but also enhance its visual appeal.

In conclusion, the SMc Audio VRE-1 is a remarkable vacuum tube preamplifier that combines innovative technology with high-quality craftsmanship. Its balanced design, premium components, versatility in connectivity, and customizable gain settings make it a standout choice for anyone seeking to elevate their audio experience. Whether you are a seasoned audiophile or just beginning your journey into high-fidelity sound, the VRE-1 promises to deliver an immersive listening experience that captures the essence of your favorite music.