RME Octamic II - 8 channel microphone preamp and 192 kHz/24bit A-D converter

RME Micstasy Highlights

• 8 x Mic / Line Preamp Input (XLR/TRS Combo)
• 8 x Line Output (TRS balanced)
• 8 x AD-converter (up to 192 kHz)
• 2 x ADAT Output (S/MUX, up to 96 kHz)
• 4 x AES/EBU Output (D-sub, up to 192 kHz)
• 1 x AES/SPDIF Sync Input
• Phase, Low Cut and Phantom power per channel
• Clip Hold Memory
• The balanced TRS inputs of the Neutrik Combo XLR jacks are phantom power-free and can be operated as real line inputs too. The improved design of the input circuits allows for a maximum input level of 21 dBu with a convenient gain range from 6 dB up to 60 dB.
• Improved signal to noise ratio (SNR) ADC 107.5 dB
• Improved THD, especially at higher gains
• Optimised heat dissipation by a new and larger housing with improved convection
• Internal wide range power supply with line filter, insensitive to voltage fluctuations
• Super-stable, short circuit proof 48 V phantom power
  

Included in the Box

• Octamic II

Description

OctaMic II offers 8 balanced XLR mic / line inputs via Neutrik XLR/TRS combo jacks. Each channel contains switches for 48V phantom power, a low cut filter and phase reversal. Amplification can be set between 6 and 60 dB. LEDs for signal, clip, and activated phantom power give a complete overview on the unit's status. When the special Clip Hold mode is activated, any detected clip-state will cause the corresponding LED to flash once per second. With this, the user gets a long-term peak detection, and no longer needs to constantly watch the LEDs. At the same time momentary overloads are still displayed correctly.

On the front switches include power on/off and output level, for a choice of -10 dBV, 4 dBu or Hi Gain ( 19 dBu) as reference level. This unusual feature offers two advantages. First, the reference level can be easily switched to match any of RME's current interface devices, from HDSP 9632 through Multiface up to the renowned ADI-8 series converters. Second, the Signal to Noise ratio is optimized, and the Clip-LED will exactly match the ones of the ADI-8 (2 dB below 0 dBFS).

The balanced line level output signal is available at the back of the unit via 8 stereo TRS jacks. The specially developed, internal hi-performance switch mode power supply lets the OctaMic II operate in the range of 100V to 240V AC. It is short-circuit-proof, has an integrated line-filter, is fully regulated against voltage fluctuations, and suppresses mains interference.

AD-Conversion

The 8-Channel AD-conversion of the OctaMic II operates at up to 192 kHz. The digitized signal is available simultaneously at the double ADAT output (S/MUX, up to 96 kHz), and at a DB-25 connector (4 AES/EBU outputs, up to 192 kHz). The digital part can be clocked internally (master) and externally via word clock, AES/EBU and SPDIF.

RME's outstanding SteadyClock ensures perfect A-D conversion, as jitter on the external sync-sources is nearly completely removed. All settings are done via DIP-switches on the back of the OctaMic II. Analogue outputs and both digital outputs operate fully simultaneously. The choice of reference level affects the analogue outputs only, the signal/clip indication and the AD-conversion will react only to the Gain-pots.

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