Portable Battery Powered Stereo Microhpne Preamp with AES/SPDIF Digital Output The Audioroot uPRE MKII is the successor of the uPRE microphone preamp which was first introduced in 2010. The new MKII’s electronic design benefits from many enhancements including a 24bits/192kHz digital output. This unit is a small, lightweight, high quality microphone preamplifier designed for ENG/EFP or musical production. It can be operated with 2 x 9V batteries or an external power supply via a Hirose push-pull connector. It will add 2 mic inputs to your recorder thru analog and/or digital inputs. The wide range trims offers perfect control over audio level. Features 2 Electronically balanced mic inputs via Switchcraft mini XLR High efficiency 48V Phantom for Mic Power on each channel 80 Hz 12dB/Oct LF Cut filter on both channels -50dB to +80dB input gain trims Stereo Link M/S Decoding – can be used as a mono mixer Unbalanced outputs via Switchcraft mini XLR5 AES (default) or SPDIF 24bits/192kHz digital output Miniature 3 leds level indicator per channel Power / low battery indicator (13V threshold) Rugged hybrid polyamid/aluminum housing Anodized/engraved face plates 2 x 9V batteries or 9 – 18V external power supply (automatically switched) 5 hours typical battery autonomy with 2 Schoeps CMC6Ug and ADC ON 10 hours battery autonomy with dynamic microphones and ADC OFF Compatible with environnement friendly iPOWERUS lipo batteries Optional 100-240V power supply 130 x 85 x 30mm / 255 grams The optional uPRE MKII CABLE KIT includes the following: 2 XLR mic inputs cables 1 mini XLR stereo output cable (mini XLR5 to 2 x mini XLR3) 1 XLR3 AES output cable Technical Specifications Input impedance / impédance d’entrée : > 5kohms Min gain : -50dB Max gain (Zsource = 50R, Zload =600ohms) : > 80dB Distorsion : 0.003% < 40dB gain / 0.005% @ 60dB gain Equivalent input noise EIN (bruit ramnené à l’entrée) : -128.8dBu @ gain max (Zsource = 200Ohms) Bandwidth / bande passante (+/- 3 dB) : 10Hz – 70kHz Max ouput level / niveau de sortie max (Zload = 600R) : +17dBu Power consumption @ V=12V / 48V off / ADC off : 92mA Power consumption @ V=12V / 48V on / ADC off : 130mA Power consumption @ V=12V / 48V on / ADC on : 155mA Power consumption @ V=18V / 48V off / ADC off : 62mA Power consumption @ V=18V / 48V on / ADC off : 85mA Power consumption @ V=18V / 48V on / ADC on : 100mA FEMTO vs uPRE MKII – features comparison chart FEMTO uPRe MKII Minimum gain +10dB -50db Maximum gain +64dB +80dB Mic inputs 2 / electronic balanced / full size XLR 2 / electronic balanced / mini XLR 48V phantom power YES YES High pass filter 80 Hz 12dB/Oct 80 Hz 12dB/Oct Stereo link / gang NO YES M/S decoder NO YES Display 96 x 64 OLED LEDs Analog output Balanced / XLR 5 Unbalanced / mini XLR 5 Digital output NO AES or SPDIF Size 95 x 129 x 42mm 130 x 85 x 30mm Weight 327 g 255 g
