27.3 Instrument

The instrument input of the Fireface 800 has been optimized especially for guitar and bass. A soft clipping function limits the level from –10 dBFS on, and offers tube-like distortion at full overload. The extra Drive stage adds even more distortion and also increased sustain. The Speaker Emulator gently shapes the sound for an optimal recording experience.

LIM

The distortion caused by the clipping function of the instrument input is audible. Depending on use and application the new harmonics can be nice or disturbing:

•The guitar's volume pot can blend from clean up to full distortion

•A rhythm guitar's sound is enhanced by a popular tube-like sound

•All dynamic peaks of a slapped bass guitar are removed without audible artifacts

•An accurately played clean acoustic guitar will sound crunchy

•Steady tones sound distorted (guitar / keyboards / bass)

Therefore the Limiter can be switched off in the Settings dialog (Instrument Options Lim.). Tech- nically this is done by applying a digital gain of 12 dB to the input signal. This way, the analog limiter does no longer reach its threshold of –10 dBFS. But as this also changes the reference level of the rear input, the Limiter can only be disabled with input channel Front selected.

The digital gain for the instrument input may sound unusual at first. But the AD-converters of the Fireface 800 are much better than the dynamic ratio of any instrument recording, so when inten- tionally not recording at fullest level, nothing is lost. At higher gain (=distortion) of the input using a guitar, switching off the Limiter causes digital distortion, which adds nicely to the analog dis- tortion of the input. Just give it a try…

The Line inputs of the microphone channels can also be used as instrument inputs. Active in- struments can be connected directly and be level-adjusted perfectly with the Gain pots. Passive e-guitars require an additional impedance buffer. Most guitarrists have one, but don't know that they do. Modern floor effects devices are active even in bypass mode, and then operate as impedance buffer.

Drive

Drive is an additional clipper, for 25 dB more gain (=sustain) plus substantially higher distortion. It will simply blow you away. Also well suited for bass guitar.

Speaker Emulation

The basic idea of the Fireface 800 instrument input is not to alter the sound in a specific way, but to pre-condition the sound so that it gets much easier recorded and processed within the DAW application. This is accomplished by an optimization of the input/record signal via:

•light pre-clipping (see above)

•removing low frequency noise

•removing high-frequency noise

•a small bass and presence boost

All frequency corrections are part of the Speaker Emulation option. The name is originated by the fact that guitar cabinets typically show a big level attenuation in the high frequency range, making distortion sound less brilliant and harsh. After activating this option, a guitar completely distorted by LIM and Drive will sound excellent even when played directly into a mixing desk.

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User's Guide Fireface 800 © RME

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Intel Fireface 800 manual Instrument, Drive, Speaker Emulation
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Fireface 800 specifications

The Intel Fireface 800 is a powerful audio interface celebrated for its high-performance capabilities and versatility in both studio and live settings. Designed to cater to the needs of musicians, producers, and sound engineers, it stands out with its rich feature set and reliable technology.

One of the defining features of the Fireface 800 is its support for an impressive 26 input and 28 output channels. This extensive I/O configuration facilitates seamless integration with a wide variety of audio production setups, allowing users to record multiple instruments simultaneously or create complex routing scenarios. The unit also boasts top-notch analog and digital converters, ensuring pristine sound quality with a dynamic range that captures the nuances of any audio source.

In terms of connectivity, the Fireface 800 is equipped with both FireWire and USB ports, making it compatible with a range of computers and devices. The device utilizes the FireWire 800 protocol, which delivers higher data transfer rates compared to its predecessor. This efficient transfer capability is crucial for maintaining audio fidelity and reducing latency, making it an ideal choice for real-time monitoring and recording.

The Fireface 800 also features standalone operation capabilities, functioning independently of a computer when needed. This is particularly useful for live performances, where reliability and reduced setup complexity are essential. Users can easily connect microphones, instruments, and other equipment directly to the Fireface 800, making it a versatile tool for a variety of scenarios.

With its low-latency driver technology, the Fireface 800 ensures smooth performance even when handling demanding audio tasks. Its advanced ADAT and S/PDIF digital inputs and outputs provide further flexibility for connecting other gear, such as additional preamps and effects processors.

Another noteworthy characteristic of the Fireface 800 is its robust build quality. Designed for regular use in professional environments, the unit features a rugged metal chassis that can withstand the rigors of transport and daily use. This ensures longevity and consistent performance for audio professionals who depend on reliable equipment day in and day out.

In summary, the Intel Fireface 800 is a versatile and powerful audio interface that caters to a wide spectrum of audio production needs. With its extensive I/O capabilities, high-quality converters, reliable connectivity options, and robust design, it continues to be a popular choice among audio professionals striving for excellence in their work.
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