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The EUREKA Pro Recording Channel The Eureka is a professional recording channel strip containing a discrete class A transformer-coupled microphone preamplifier, compressor, and three-band parametric equalizer. The microphone preamplifier features variable input impedance so that the Eureka can be matched and "tuned" for all types of microphones and recording applications. The Class A transformer-coupled microphone preamplifier also features "SATURATE" which adjusts the drain current on the input FET amplifier to simulate of the effects of tape saturation and tube "warmth". The Eureka's ultra fast compressor has both soft and hard knee compression as well as a separate make up gain stage and hi-pass side chain compression to deliver hard pumping to ultra transparent compression and everything in between. The Eureka's three-band fully parametric EQ gives you variable Q (bandwidth) on each band as well as an EQ pre COMP switch to put the EQ before the Compressor in the signal path. The equalizer has overlapping frequency selection on each band for total tonal control and shaping. The Eureka is loaded with microphone, line and instrument input so you can use it as a front end preamplifier for recording with microphones, guitars, keyboards, synths as well as a compressor/equalizer on a single channel during mixdown. The Eureka also has balanced send and return jacks so that you can insert your favorite outboard processor before the compressor/EQ to further enhance and customize your sound. An optional 24 Bit/192kHz digital output card (AD192) is available for the Eureka to further optimize sonic performance. The Eureka's AD192 digital output card is loaded with both SPDIF and AES/EBU outputs, word clock I/O as well as a balanced TRS line input so that only one output card is necessary when using two Eureka's in stereo or dual mono situations. The Eureka gives you the sonic performance and control you need in the real-world to produce professional quality audio that you, your customers and your fans deserve!
	FeaturesTop
• Class A High Headroom Transformer Coupled Microphone Preamplifier • Variable Microphone Input Impedance • Variable SATURATE control (simulates tape saturation and tube warmth) • Fully Variable Compressor with Hi-pass Side Chain • Three Band Fully Parametric Equalizer • EQ Pre or Post Compressor • High Headroom Output Section • Very Low Noise Design • Internal Power Supply • Transparent, wide range performance • Optional 24-Bit/192k Digital Output Card (AD192)     Click on image to enlarge Eureka Retail Price: $699.95 AD192 Digital Card Retail Price: $249.95
Channels One Dynamic Range >115dB Headroom +22dB Frequency Response 10Hz to 50kHz Internal Operating Level 0dBu = 0B
Microphone Preamp   Input Impedance, XLR Input 1.3k Ohms Input Impedance, Line Level Input 10k Ohms Connectors Neutrik™ Combo
Microphone Preamp   Gain +12dB to +52dB Noise Floor -112dBu (+12dB gain) EIN -127dB THD + Noise (0% saturation) <0.005% THD + Noise (full saturation) <0.5% Microphone Input Connector XLR Microphone Input Impedance (selectable) 2.5k, 1.5k, 600, 150, 50 Ohms Instrument Input Connector 1/4" TS Instrument Input Impedance 1 Meg Ohm Send Connector 1/4" TRS balanced/unbalanced Send Output Impedance 51 Ohms Return Connector 1/4" TRS balanced/unbalanced Return Input Impedance 10k Ohms Metering (3-LED) -20dBu, 0dBu, Clip Line Input (switchable) 1/4" TRS, 10k Ohm Input Impedance Phantom Power (switchable) +48V (pin 1, pin 2 XLR) Pad (switchable) 0dB/-20dB Phase (switchable) 0, 180 degrees Hi-pass filter (switchable) -3dB shelf at 80Hz
Compressor   Threshold (variable) -40dBu to +20dBu Ratio (variable) 1-10 (1:1 to 2:1) Attack (variable) 0.1 to 200 ms Release (variable) 0.05 ms to 3 S Gain Make-up -20dB to +20 dB Hi-pass Side Chain Filter (variable) 10Hz to 10kHz Metering Analog VU (gain reduction / Output Level)
Equalizer   Low Band (+/-13dB) 20Hz to 300Hz Mid Band (+/-13dB) 200Hz to 3kHz High Band (+/-13dB) 2kHz to 20kHz Q (variable all bands) Q=0.4 to 2 (3 octave to 2/3 octave)
Master   Output Fader -70dB to +10dB Output Connectors XLR balanced and 1/4" TRS balanced/unbalanced Output Impedance 51 Oms Metering (output level) Analog VU (-20dBu to +6dBu) Meter (gain reduction) Analog VU (-20dB to 0dB) Output Headroom +22dBu
Physical   Power Supply Internally Regulated Linear Type Power Requirements (factory configured) 100VAC to 120VAC, 200VAC to 240VAC Size 1U Rack Dimensions 19" x 1.75" x 7" Weight 8lbs.
AD192 - Optional Digital Output Card   Bit Resolution up to 24-Bit Sample Rates Supported 44.1, 48, 88.2, 96, 176.4, 192 Word Clock In / Out via BNC Connector Supported Digital Formats Professional, Consumer Simultaneous Digital Ouputs AES/EBU and SPDIF Analog Line Input (one AD192 card supports two Eureka's) 1/4" Balanced TRS THD + N 0.002 % Signal to Noise Ratio 114 dB Dynamic Range 114 dB
	DiagramsTop
Front Panel (Click image for larger view) Back Panel (Click image for larger view)