AKD8D and AKD8DP advances the art of pristine recordings
Part of the outstanding success of Merging’s Horus and Hapi Networked Audio Interfaces was due to the remarkable quality of the A/D conversion and the integral microphone preamplifiers. Hailed by top engineers and producers from all over the globe as a revolution in headroom and transparency, Merging is announcing a new generation of A/D cards that embrace the latest innovations in technology.
The boards are available in two versions as it was with the previous generation. The AKD8D is the standard version giving superlative results up to 192kHz PCM. The AKD8DP extends the range up to 384kHz and includes all variants of DSD up to 256 and DXD.
The new boards are already being shipped to fulfil the significant order rate that has been consistent since Horus and Hapi were introduced. As with the previous cards, Direct Analog Out connections are present to allow a mic level feed to be sent to an analog mixer or recorder. The RAVENNA/AES67 connection on Horus and Hapi allows for full remote control of all parameters including the ability to switch individual channels to Mic or Line. Phantom power switching, phase reversal, and low cut filters can be enabled from the control room or locally from the front panel of the unit.
Merging’s team of engineers has redesigned these circuits using the latest components and achieving remarkable transparency and performance. A dynamic range of better than 120dB is easily achieved. The input stage now features the ability to select the optimal impedance for condenser or dynamic microphones and this can also be done on a per-channel basis. In order to improve any leakage induced noise from the phantom power during warm-up, lower value, higher voltage high grade electrolytic capacitors have been used. Particular care has been taken to minimise any DC offset to the inputs of the A/D converter. This improvement to the DC servo loop guarantees that the offset is under 1mV over the whole gain range up to a maximum of 66dB. Analog detection that is a feature of the ADA8 cards is now incorporated to ensure that gains are switched near to zero. Both these features combine to suppress any clicks caused by switching the gain settings.
In summary, the AKD8D/P offers ultra-low distortion and noise floor at low levels whilst reducing latency even more. Another remarkable feature of the Merging Audio Interfaces is the low power consumption. The new components reduce that further by saving over 2 Watts per board which could be as much as 12 Watts on a fully loaded Horus.
Merging’s President, Claude Cellier heads up the hardware design team and had this to say; “We were always proud of what we achieved with the original AD8D series but the new AKD8D has unprecedented specifications both in terms of precision and neutrality. We know this is the cleanest mic preamplifier and the most discriminating converter we have ever designed. One of our challenges these days is that these specs are starting to exceed those of the test gear so we rely on our users to tell us how good they really are. We are confident that our usual selection of Grammy® winners are going to give us the thumbs up.”
Merging Technologies SA is a Swiss manufacturer with over 25 years of experience in developing groundbreaking, professional Audio and Video products for a wide range of entertainment and media industries. With a dedicated user base in the elite end of the music, film, television, mastering and performances industries, Merging is committed to developing product ranges with unrivalled quality and flexibility, no matter what the application. Merging builds tools for people who want more from their systems, have an inherent need to push boundaries, and believe that quality always comes first.
RAVENNA is a solution for real-time distribution of audio and other media content in IP-based network environments. Utilizing standardized network protocols and technologies, RAVENNA can operate on existing network infrastructures. RAVENNA is designed to meet the strict requirements of the pro audio market featuring low latency, full signal transparency and high reliability and is fully AES67 compatible. With a capacity of nearly 8 x MADI streams over a single Gigabit Ethernet link, it is also the first and only Layer-3 based IP audio protocol with full support for high-channel count DXD and DSD signals.
While primarily targeting the professional broadcast market, RAVENNA is also suitable for deployment in other pro audio market segments like live sound, install market and recording. Possible fields of application include (but are not limited to) in-house signal distribution in broadcasting houses, theatres, concert halls and other fixed installations, flexible setups at venues and live events, OB van support, inter-facility links across WAN connections and in production & recording applications. http://ravenna.alcnetworx.com