Volume 2

Stereo Volume Controller

Volume 2 is an active DAW monitoring controller and a puristic high-end preamplifier.

Features

• High-end volume potentiometer and illuminated mute switch from ALPS; the potentiometer controls directly (no VCA or DAC circuits)
• The mute switch allows a quick reaction when speakers or ears need to be protected (e.g. in case of a computer crash)
• In contrast to digital volume control, where the bit resolution is continuously reduced as the volume decreases, the signal does not deteriorate with analog volume control.
• In contrast to passive volume control, active volume control does not affect the phase and frequency

response. The monitoring signal sounds reliably the same at any monitoring volume.

• Balanced XLR input and output connectors
• High-quality balancing stages with very high common-mode rejection (minimizing interference/interference in the signal paths)
• High-quality power supply unit with toroidal transformer
• Solid aluminium knob with 45mm diameter for smooth, sensitive operation
• Elegantly designed and compact housing for flexible desk positioning close to the screen.

Analog Volume Control

The monitoring volume is controlled analogously with an Alps-RK 27 potentiometer.

If the volume is controlled digitally, for example in the DA-converter, the bit resolution decreases with decreasing volume with one bit per -6dB. Usually we listen with about -30 dB at full volume, which decreases the bit resolution by 5 dB.

Active or Passive?

It is claimed that passive circuits are less signal influencing and more puristic and therefore better. Well, that is not so.

A passive control element such as a potentiometer in the signal path, which is not electronically buffered, influences the frequency response and phase position. Both change continuously as you change the volume.

This is exactly what does not happen with an active control.

Don’t Panic

The Mute switch has two rights of existence. On the one hand, it allows the speakers to be muted without having to touch the volume control and thus leaving the set volume.

Secondly, the Mute switch is a panic switch. Whenever the computer hangs or crashes, there is a risk that a full level signal will reach the speakers. This can be extremely loud and may damage the speakers.

The mute switch can be used to quickly turn off the signal and protect the speakers and your hearing.

For audio professionals and discerning listeners alike, precise control over volume is essential to achieve the perfect sound balance and maintain audio integrity. The SPL Audio Volume2 Stereo Volume Controller is designed to meet this exact need, offering unparalleled accuracy and consistency in volume adjustment. Whether you are mixing in the studio, mastering tracks, or simply enjoying high-fidelity music, this device ensures you can fine-tune your audio levels with confidence and ease.

One common challenge in audio setups is the lack of reliable, distortion-free volume control that preserves the purity of the original signal. Many controllers introduce noise or color the sound, which can compromise the accuracy of monitoring and ultimately degrade the listening experience. The SPL Volume2 addresses this by utilizing high-quality analog components and a robust design that guarantees clean, transparent volume adjustments without any added coloration. This means that what you hear is exactly what was recorded, allowing for precise critical listening and dependable audio evaluation.

The Volume2 features two input and two output channels, both equipped with XLR connectors, enabling seamless integration into professional analog audio setups. Its balanced XLR inputs and outputs help minimize interference and noise, which is crucial in studio environments where signal integrity is paramount. With a desktop form factor and a weight of just 3.52 pounds, the device is compact yet sturdy, making it an ideal addition to any control room or listening station without occupying excessive space.

Functionality is further enhanced by the intuitive volume control knob, which provides smooth, continuous adjustment over a wide range of levels. This allows users to make fine volume changes easily, facilitating detailed monitoring tasks such as matching reference levels or comparing mixes. The analog nature of the control ensures that volume changes are immediate and natural, avoiding the latency or stepping that can occur in digital controllers.

In practical terms, the SPL Volume2 is perfect for audio engineers, producers, and audiophiles who demand precise volume management in their workflow. Whether used in conjunction with headphone amplifiers, studio monitors, or other analog devices, it offers reliable performance that supports critical listening and accurate mixing decisions. Its durable construction ensures long-term reliability even in demanding professional environments.

Measuring just a few inches in width and depth, and weighing less than four pounds, the Volume2 fits effortlessly on any desktop or rack shelf. Its sleek, professional design complements high-end studio gear, while the straightforward setup and operation allow users to focus on their work without technical distractions.

In summary, the SPL Audio Volume2 Stereo Volume Controller is an indispensable tool for those who require exacting volume control without compromise. Its blend of high-quality analog engineering, professional-grade connectors, and user-friendly design makes it a sound investment for improving the accuracy and enjoyment of any audio setup. With the Volume2, you gain the confidence that every volume adjustment is precise, transparent, and free from unwanted noise, ensuring your audio experience is always at its best.