Core Sound — 4Mic Portable Four-Channel Microphone Pre-amp/A-to-D Converter

(Last updated 09/22/2007)

Channels: Four
Gain Matched mode for surround sound recording with TetraMic^®
Multiplexed output allows use of a two-channel recorder to record four channels of 24/44.1, 24/48, 24/88.2 or 24/96
Monitoring: live, two channels at a time
S/PDIF Digital Outputs: Four (two RCA coaxial jack, two Toslink optical jack)

All four outputs active simultaneously
Word width: 16 to 24-bits
Sample rates: 32 to 192 KS/s
Data Formats:
- S/PDIF (two channels per output)
- multiplexed S/PDIF (four channels per output)

Gain: continuous rotary control (Normal mode), stepped linear switch (Gain Matched mode)
Level: nine LEDs per channel
Power Off/On
NoMux/Mux
Headphone Level, continuously variable
Headphone source select: selects two channels for monitoring
Microphone power: three-way switch (Off/TetraMic/48 Volt Phantom Power), LED

Frequency response: 20 Hz to 40 KHz, +/- .1 dB
Noise Floor: -140 dBFS typical
Gain: 0 to 66 dB, continuous (Normal mode); stepped @ 10 dB per step (Gain Matched mode)
Gain Matched mode: all channels gain matched to +/- 0.1 dB (typical)
Inputs: two mini-XLR five-pin jacks (mates with Switchcraft TA5F), breakout cables available for XLR-F jacks and others

Syncs to external S/PDIF data clock
48 Volt DC Phantom Power: 10 mA per channel, all channels active
Provides correct power for Core Sound's TetraMic single-point surround sound microphone
Battery complement: two 9 Volt alkaline "transistor radio" batteries (type 1604)
Operating time for two batteries: 4 hours minimum, batteries may be hot-swapped for unlimited continuous operation
External power supply: 9 to 16 VDC @ TBD mA (minimum) via 5.0/2.1 mm DC power jack, center positive
Dimensions: 7-7/8" x 4-7/8" x 1-5/8" (W x D x H)
Weight: 1 pound, 10.25 ounces (745 grams)