Using the XLR-to-RCA balanced input adaptors

Using the XLR-to-RCA balanced input adaptors

As stated in the owner’s manual, all 4 of the VRE-1’s inputs are actually balanced. I chose the connector arrangement based on a best-guess estimate of what most audiophiles are likely to have in their systems - one balanced source (XLR), and the rest unbalanced (RCA). If you have more than one balanced source and wish to take full advantage of its balanced mode of operation, I can provide custom-built adaptors to allow for this. Here is a photo of what they look like in operation:

photo by Frederic Beudot for 6Moons.com

I build these adaptors from premium parts to be as sonically transparent as possible, and they work exceptionally well. If you prefer, you can build them yourself. I choose silver-plated Neutrik XLR cable-mount female connectors, WBT Next-Gen silver cable- mount RCAs (#0110AG), and I use Wonder Wire for the connections. A separate 22ga, Teflon-insulated wire is used for the XLR pin 1 connection to chassis ground, and I terminate it with a stacking-type banana plug to facilitate the use of multiple adaptors. Connect the wires as follows (note that these are NOT typical XLR-RCA adaptors):

XLR pin 1 - flying lead to stacking banana plug (shield ground)

XLR pin 2 - to RCA center pin (plus hot)

XLR pin 3 - to RCA outer case (negative hot)

You can add whatever number you need, including converting all inputs to full-balanced operation if that is what your system requires.

Steve McCormack, designer - SMc Audio

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.