Similarly, eight analogue output channels, up to 10 digital output channels and stereo headphone outputs can play 20 different channels. For low-latency foldback or monitoring to headphones or main outputs, each output pair , etc or the headphone output can optionally be driven from the built-in DSP mixer with an individual local mix of any selection of inputs through the controller applet.
All analogue inputs are electronically balanced with automatic unbalanced operation. Analogue outputs are electronically balanced with 'bootstrapping', i. Orpheus makes no compromises on audio quality.
It is the result of years of research and development into digital audio conversion and extensive dialogue with Prism Sound's customers. The Orpheus design brief was: Get Prism Sound quality conversion and mic preamps into a 1U box at a more accessible price point.
Sound quality just wasn't negotiable. Orpheus has the same no-compromise analogue front and back ends, with the same fully-balanced-throughout architecture, the same isolation barriers protecting the analogue from digital and computer interference.
Orpheus draws on Prism Sound's years of experience in developing digital audio products, including its range of audio test equipment, adopted by a wide variety of clients across the audio industry from pro-audio to consumer electronics. This experience means that Orpheus is well-behaved both as a computer peripheral and an audio processor.
Reliability is vitally important in professional recording. Prism Sound has always made extensive use of precise software calibration techniques in its converters - pots and tweaks are always unreliable, so there are none. The design team has gone to great lengths to minimise noise and interference, in particular hum.
With this in mind, we have taken great care to make sure that not only is the Orpheus noise and distortion spectrum beyond reproach, but the RMS distortion result measures up to the state of the art.
Orpheus is easy to connect to your computer and to your outboard gear. For both Mac and PC platforms, there is a controller application to configure the unit and control its built-in mixer and other functions.
Aside from the monitor and headphone level controls, everything else is operated solely from the Orpheus controller application. The controller software opens on-screen as a separate panel alongside your existing editing software. Increasing standardisation is leading to more choice for those wishing to "mix and match" editing and production software with various audio interfaces.
Prism Sound has taken on board the increasing importance of native processing power for professional users and the fact that software products for standard PC and Mac platforms have been greatly enhanced in recent years. Orpheus' eight analogue inputs support various capabilities.
Orpheus has four really good mic amps with software-controlled gain in 1dB steps, individually-switchable phantom power - and very low noise and distortion. These inputs are auto-sensing, and support microphone and line input, with digitally-controlled mic gain in excess of 60dB. Two of these inputs also support direct injection DI instrument connections with quarter-inch jacks on the front panel.
By selecting the input type Mic or DI , low- or high-impedance cartridges can be loaded with suitable termination impedances. All analogue inputs have individually-selectable Prism Sound "Overkillers" built in, ust as on the higher-priced ADA-8XR, to catch those fast transients. This control changes the operating voltage and the Channel Status format and is complemented by two in-line adaptor leads that provide external XLR connections for AES3 devices.
Once set up using the Orpheus controller applet, the unit can be disconnected from the host computer and used independently. Orpheus will retain its settings when powered down so even if it is switched off, Orpheus can be re-powered and stand-alone operation can continue with the automatically-stored settings. Orpheus has a powerful built-in digital mixer that can be configured from the host computer to provide foldback feeds to performers, each with their own stereo mix of workstation playback and any of the inputs.
The question of latency in computer interfaces, especially USB and FireWire boxes, is an important one. Obviously there are situations in which the round-trip latency needs to be really short, like in overdubbing. The problem is that even if the latency on the interface and in the driver is as short as it could ever be, a native DAW is busy with plug-ins and other software and buffer times are probably set long. The only answer is to provide local foldback mixing in the interface.
This is not new, and other products feature it, but most local mixers in competitive products are just too basic. Strips can be stereo or mono, and the mixes are dithered with filtered coefficients, the same as a high-end mixer.
This is generally reckoned to be small enough not to be problematic. Although the unit's outputs will mainly be used for monitoring or foldback, the fact that they are of such high quality makes them suitable for a range of other applications such as insertion points, analogue summing or stem-based mastering.
The eight analogue outputs on Orpheus allow monitor setups from multi-stereo up to 7. Orpheus has a real volume knob which can be assigned to any or all of the analogue or digital outputs for use as a control room monitor control. There are two headphone amps, suitable for all types of headphones, each with its own independent volume control.
In addition to it's workstation feed and mixer, the headphones can also be quickly switched across the other output pairs, which is handy for setting up. The digital output is equipped with the four Prism Sound SNS noise-shaping curves and includes Prism Sound's renowned synchronous sample-rate conversion, allowing outputs to various external devices at other sampling rates.
The sample-rate converter can be used at the outputs as well as the inputs, so as well as dealing with unsynchronised or wrong-rate digital inputs, Orpheus can also generate, say, a live Since Orpheus also includes the full suite of the famous Prism Sound 'SNS' noise shapers, you can also reduce to bits at mastering-house quality.
The DSP and the MCU boards have also been upgraded in order to integrate all the new features and improve even more the most legendary product of Orpheus. The box with the LED and the Orpheus logo placed on front is the power supply. Its goal is to convert the noisy AC voltage coming from the electrical plug into a regulated and clean DC voltage. The other box, is the one to contain all the electronics that does all the digital signal processing and digital to analog conversions.
This separation is made in order to avoid catching the noise coming from the AC to DC voltage conversion phase. The Orpheus logo is carved into the front panel by using delicate and special mechanical process.
When the unit is turned on, a beautiful backlight illuminates the logo and indicates to the user that the device is ready to operate. The marvellous curve on both front panels of the two separated boxes reminds the refined and classy style of the Orpheus logo wave. This product is not only a spectacular audio device but also a state of the art mechanical design.
This in-house development is using cutting edge technologies in audio, electronics and computer science allowing you to live an unforgettable experience. The multiple functions of this outclass mediaserver combined with an harmonious design is destined to be the central element of your High-end audio system.
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