RME OCTAMIC II 8-Channel Microphone Preamplifier

8-Channel Microphone Preamplifier

RME OCTAMIC II is a Hi-end 8-channel microphone preamplifier that provides 8-channel 192 kHz / 24-bit AD conversion with a combination of sophisticated components and proven RME technology.
RME OCTAMIC II offers 8 balanced mic/line inputs via Neutrik XLR/TRS combo jacks. Each channel contains switches for 48V phantom power, a low cut filter, and phase inversion. Gain can be set between 6 and 60 dB. Signal, clip, and phantom power LEDs provide a complete overview of the unit's status. When the special Clip Hold mode is activated, any detected clip state will cause the corresponding LED to blink once per second. This gives the user long-term peak detection and eliminates the need for constant LED monitoring. At the same time, momentary overloads are still displayed correctly.
Front panel switches include power on/off and output level, with a choice of -10 dBV, +4 dBu, or Hi Gain (+19 dBu) as the reference level. This unusual feature offers two advantages. First, the reference level can be easily switched to match any current RME interface device, from HDSP 9632 to Multiface to the renowned ADI-8 series converters. Second, the signal-to-noise ratio is optimized and the Clip LED will exactly match those of the ADI-8 (2 dB below 0 dBFS).
The balanced line-level output signal is available at the rear of the unit via 8 stereo TRS jacks. The specially developed high-performance internal switching power supply allows the RME OCTAMIC II to operate in the range of 100 V to 240 V AC. It is short-circuit proof, has an integrated line filter, is fully regulated against voltage fluctuations, and suppresses mains interference.
The 8-channel AD conversion of the RME OCTAMIC II operates up to 192 kHz. The digitized signal is available simultaneously on the dual ADAT output (S/MUX, up to 96 kHz) and on a DB-25 connector (4 AES/EBU outputs, up to 192 kHz). The digital section can be synchronized internally (master) and externally via word clock, AES/EBU, and SPDIF.
RME's exceptional SteadyClock™ ensures perfect AD conversion, as jitter from external sync sources is almost completely removed. All settings are performed via DIP-switches on the rear of the RME OCTAMIC II. The analog outputs and both digital outputs operate simultaneously. The choice of reference level affects only the analog outputs; signal/clip indication and AD conversion will only respond to the gain potentiometers.

Specifications

• 8 balanced mic/line XLR/TRS inputs
• Gain range: 54 dB
• Input impedance: XLR 2 kOhm, TRS 5 kOhm
• Analog input level: from -40 dBu to +21 dBu
• Maximum output level: +21 dBu
• Output impedance: 75 Ohm
• Switchable output level: Hi Gain / +4 dBu / -10 dBV
• Signal-to-noise ratio (SNR): 129 dB EIN @ 150 Ohm
• THD: < 0.0005 % @ 30 dB gain
• Wide frequency range (200 kHz) with special EMI input filter
• Frequency response -0.5 dB: 5 Hz - 200 kHz
• High-pass filter: 80 Hz, 18 dB/oct.
• Line Out: 1/4" TRS (6.3 mm stereo jack), servo-balanced
• Phantom power: +48 Volt switchable per channel
• Wide-range internal switching power supply 100-240 Volt AC
• AD conversion
• SNR: >110 dB(A)
• Supported sampling rates: 28 kHz - 200 kHz
• THD: < 0.0003 %, < -110 dB
• Clock sources: AES/EBU (also coaxial SPDIF), wordclock, internal
• SteadyClock(TM) ensures superior sound quality even with jittery external clocks