EarthWorks 1022-ZDT by Millionhead ZDT with 2 clear details, responded from 1Hz to 200KHz + 0.5DB with Phantom 48V.

Two Channel Zero Distortion Technology Preamp (1 Rack Space) The ZDT pre -amplifier with 2 clear channels responded from 1Hz to 200KHz (+ 0.5DB). There is a phantom 48V for the microphone. And there is a little distortion Earth 1022 is Part of the ZDT Distortion Preampplifier Series and is based on Discrete Circuitry Designed by David Blackmes. These preamps are fast, Clean and Varyan and Vary. ONICS. With Frequency Responsses Ranging from 1Hz to 200KHz + 0.5DB, A Rise Time of 0.27 MicroseConds and Distortion of Less Than 1 Part Per Million (0.0001%) It Eliminats The Possibility. Than One part per millionHigh output level +30dBuVery low output impedance will drive long lines without interference or signal lossTrue 48 volt phantom, polarity reverse & clip indicatorSeparate XLR & 1/4” Phone (t-r-s) outputs, each with its own gain/level controls1/4 "Phone Connector Output Will Drive Balanced or UNBALANCED INPUTSLL DIFFERENTIAL (BALANCED) from XLR in to XLR OUT-No Internal Conversion to Single-ENDEDALL DISTEE Components; No. Parency with Minimum Signal Path and Minimum Features