Eureka

"PreSonus has a winner on their hands with Eureka. It’s a well-built, high-performing channel strip at an affordable price. At under $700 retail, Eureka stands out in the crowd. Its specs and feature list are cool — transformer-coupled input, flexible signal path, good processing capabilities, etc. — but its outstanding attribute is its open, detailed sound. It would make a great choice as a front-end for a DAW." - EQ Magazine

"You will not find as many features on a channel strip of this quality for this price anywhere else." - TapeOp Magazine

"Vocals tracked through the Eureka were stunning. The preamp stage is quite transparent, yet natural sounding. When using the Eureka to amplify other sources, the results were consistently impressive." - Stefan, Christian Musician Magazine

"Well, I guess it doesn't pay to judge a pre-amp by its cover/price. The sound was way above what I was expecting. This is really great for vocals, bass tracking or re-amping. The compressor is worth the price of the unit alone." - Sean, CA

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!

  • 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)

Eureka Retail Price: $699.95

AD192 Digital Card Retail Price: $249.95

ChannelsOne
Dynamic Range>115dB
Headroom+22dB
Frequency Response10Hz to 50kHz
Internal Operating Level0dBu = 0B
Microphone Preamp 
Input Impedance, XLR Input1.3k Ohms
Input Impedance, Line Level Input10k Ohms
ConnectorsNeutrik™ 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 ConnectorXLR
Microphone Input Impedance (selectable)2.5k, 1.5k, 600, 150, 50 Ohms
Instrument Input Connector1/4" TS
Instrument Input Impedance1 Meg Ohm
Send Connector1/4" TRS balanced/unbalanced
Send Output Impedance51 Ohms
Return Connector1/4" TRS balanced/unbalanced
Return Input Impedance10k 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
MeteringAnalog 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 ConnectorsXLR balanced and 1/4" TRS balanced/unbalanced
Output Impedance51 Oms
Metering (output level)Analog VU (-20dBu to +6dBu)
Meter (gain reduction)Analog VU (-20dB to 0dB)
Output Headroom+22dBu
Physical 
Power SupplyInternally Regulated Linear Type
Power Requirements (factory configured)100VAC to 120VAC, 200VAC to 240VAC
Size1U Rack
Dimensions19" x 1.75" x 7"
Weight8lbs.
AD192 - Optional Digital Output Card  
Bit Resolution up to 24-Bit
Sample Rates Supported44.1, 48, 88.2, 96, 176.4, 192
Word ClockIn / Out via BNC Connector
Supported Digital FormatsProfessional, Consumer
Simultaneous Digital OuputsAES/EBU and SPDIF
Analog Line Input (one AD192 card supports two Eureka's)1/4" Balanced TRS
THD + N0.002 %
Signal to Noise Ratio114 dB
Dynamic Range 114 dB