Wadia Digital 381I Frequently Asked Questions, Should I use a Balanced or Unbalanced connection?

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Frequently Asked Questions

Should I use a Balanced or Unbalanced connection?

If your amplifier has a true balanced input, we recommend you use the balanced analog output from your Wadia 381/381i CD Player. All things being equal, properly implemented balanced (also called differential) circuitry sounds better than unbalanced circuitry. The Wadia 381/381i CD Player is a true balanced design. It generates the inverted signal in the digital domain and all subsequent processing is done in balanced mode. Your Wadia 381/381i CD Player is designed to maintain many of the advantages of true balanced design when using the unbalanced outputs. In addition, the Wadia 381/381i CD Player output stage is capable of driving both types of outputs simultaneously.

Why should I bypass the Preamplifier?

A preamplifier is unnecessary when using your Wadia 381/381i CD Player. The Wadia 381/381i CD Player provides all the necessary control functions of a preamp while the signal is still in the digital domain. This avoids the sonic degradation caused by analog circuitry, switches, and wire. The Wadia 381/381i CD Player output stage can drive any power amplifier and any interconnects, even at very long lengths.

Does the Wadia Volume Control compromise resolution?

The Wadia 381/381i CD Player uses the latest generation of Wadia’sproprietary digital volume control. The volume level can be varied in the digital domain by means of mathematical manipulation of the signal, eliminating the distortion and noise that are inevitable with even the best analog volume controls. While conventional thinking indicates that reducing the volume digitally can sacrifice low level resolution, Wadia has created an innovative solution. Wadia’s patented digital filtering algorithm produces a 24 bit output rather than the 16 bits stored on the CD. This high-resolution signal is then used in the computations which in turn reduce the volume level. This new signal is fed directly to the DAC chips. Through this innovative method, the Wadia 381/381i CD Player maintains high resolution even at the lowest volume control settings.

Can I bypass the Wadia Volume Control?

Because the Digital Volume control does not include any analog circuitry, there is none to be bypassed. Even the mathematical program step that performs the Digital Volume Control calculation is an integral part of the Wadia DigiMaster filter algorithm and therefore cannot be bypassed. If you do not need the Wadia Volume Control, set it to its maximum level of 100 on the display.

What about Analog Sources?

In order to fully realize the potential of this type of system, Wadia has a range of Analog-to-Digital converters. Now it is possible to use analog sources, such as a tuner, tape deck, or even a turntable (in conjunction with a suitable phono stage) in your system without using a conventional analog preamplifier. Consult your dealer for more information on the Wadia Analog-to-Digital products.

Should I leave the Wadia 381/381i CD Player with the power on?

The Wadia 381/381i CD Player is designed to be left with the power on with no harm or wear to the unit. All motors and laser circuitry turn off when the unit stops playing. If desired, the front display can be turned off (see Turning off the Display under Remote Operation). Leaving the power on allows the circuitry to remain in thermally stable, which provides better performance and longer life. Careful listeners will notice that the sound of the Wadia 381/381i CD Player will improve steadily after the unit is powered up. A new unit will undergo more dramatic changes when power is applied for the first time. If you turn off your Wadia 381/381i CD Player for more than an hour, you will find that the unit will undergo similar, but less dramatic improvement once power is reapplied.

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Contents Information&OperationManual 381/381i CD Player Table of Contents Preliminaries Installation and Set-upSafety Precautions General OperationThank You Wadia Digital a Brief HistoryInstallation and Set-up Unpacking AccessoriesRemote Control Two type AAA batteries Installing the Tip-ToesConnecting to Your System Connecting to AC PowerConnecting Directly to a Power Amplifier Using with a PreamplifierOptimizing the Output Level Choosing a Digital Cable Wadia 381i CD Player onlyFrequently Asked Questions Should I use a Balanced or Unbalanced connection?Front Panel Controls ExampleDisplay Features Display Functions381/381i CD Player Remote Control Operation InputPhase Invert Output Relay MutePlayback Options Using ClockLink with an External Processor Theory of OperationClockLink Status Indication Menu Screen Map Digital Algorithms Appendices TroubleShooting Lock-up Using Data DiscsSoftware License Agreement Environmental CareTechnical Specifications Safety Precautions Important Safety Precautions

381I, 381 specifications

Wadia Digital has long been synonymous with high-fidelity audio reproduction, and their models 381 and 381i epitomize this legacy. The Wadia 381 and 381i are both premium digital-to-analog converters (DACs) and serve as transport devices that reflect the brand's commitment to superior sound quality and build excellence.

One standout feature of the Wadia 381 is its sophisticated digital signal processing technology. This model utilizes advanced algorithms to provide exceptional audio performance, delivering a sound that is both accurate and engaging. The 381 is equipped with a proprietary Wadia digital filtering system that helps to minimize distortion while maximizing dynamic range. This results in a listening experience that captures the nuances and subtleties of the original recording, preserving the integrity of the audio.

Both models feature high-resolution audio capabilities, accommodating a wide range of digital formats. The Wadia 381 supports PCM rates up to 192kHz/24-bit, ensuring compatibility with high-definition recordings. The 381i takes this a step further by incorporating DSD (Direct Stream Digital) playback, which is becoming increasingly popular in the audiophile community. This versatility allows users to enjoy an extensive library of music with unyielding fidelity.

The construction of the Wadia 381 and 381i reflects the brand's high standards in engineering. Both models boast a solid aluminum chassis that not only contributes to their striking aesthetics but also helps isolate the internal components from external vibrations, enhancing overall performance. The front panel features an intuitive user interface, making navigation and selection a breeze, even for those new to high-end audio equipment.

Connectivity options are another key aspect of the Wadia 381 and 381i. They come equipped with a range of inputs, including USB, Coaxial, and Optical, providing users with flexible connectivity to computers, network players, and other digital sources. Balanced and unbalanced outputs ensure compatibility with various audio systems, allowing for seamless integration into any setup.

In conclusion, the Wadia Digital 381 and 381i are remarkable examples of high-end audio engineering. With their innovative technologies, exceptional build quality, and user-friendly design, they cater to audiophiles seeking an uncompromised listening experience. Whether you are a seasoned listener or just beginning your high-fidelity journey, Wadia's offerings promise to deliver sound that is rich, detailed, and profoundly immersive.
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