LaChapell Audio 583S MK2 500 Series Tube Microphone Preamp

FIRST TUBE MIC PRE 500 SERIES MODULE

The world’s first vacuum tube mic preamp in a 500 series module! It is still the only 500 series module to properly power the tube with 250V of TrueTube™ technology. We do not starve the tube of voltages in any way unlike most 500 series tube designs. You can even max out a rack with 583 units with no power or heat issues.
Every component on the LaChapell 583S MK2 was carefully selected for sonic perfection from the Cinemag input transformer to the Jensen output transformer.
With dual drive knobs to separately drive the input and output, the 583S provides total flexibility to explore a broad sonic palette enhancing its versatility for all of your recordings. Leaning on the input stage, the 583S MK2 delivers vintage style tube warmth. The more you drive the input, the more harmonics are introduced. Backing off on the input but increasing the output results in gorgeous clean tones with some weight provided by the Cinemag and Jensens transformers.
An essential 500 series module for the modern professional and project recording studio!

• FRONT PANEL HI-Z INPUT

   

  A front panel Hi-Z input allows the 583S to be used as an instrument preamplifier. When a 1/4″ jack is inserted into the Hi-Z input, the 583S switches into instrument mode, bypassing the input transformer so the instrument accesses the tube directly.

   

• DUAL DRIVE KNOBS

  Dual Drive knobs on the 583S provide an incredible array of tonal options. The input knob drives the input to the vacuum tube and the second knob drives the output stage. Together, you can dial in sounds from pristine to warm and harmonically rich.

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  VPR ALLIANCE CERTIFIED

  Certified by the VPR alliance giving you the assurance that it operates within specifications. Even though we properly power the tube with 250V, the 583S draws no more power than other modules (and less than many). You can fill a properly powered frame with 583S mic preamp modules with no problems whatsoever

• BOUTIQUE QUALITY TRANSFORMERS

  With a Cinemag input transformer and Jensen output transformer, the 583S mic preamp maintains   a boutique quality signal chain from I to O. Every aspect of the 583S has been designed for sonic quality that will last for generations.

   

   

  LaChapell Audio 583S mk2 500 Series Tube Preamp Features:

  • Jensen JT-115k input transformer
  • Burr-Brown and THAT balanced line drivers
  • CineMag CMOQ nickel alloy output transformer
  • Fully variable potentiometers for input and output gain stages
  • 48V phantom power, 20dB input pad, and polarity reverse
  • Front-panel, auto-switching transformerless hi-Z input for instruments
  • Enclosed chassis, for superior cooling flow and interference characteristics
  • Tube Compliment: 1 x 12AX7
  • Internal Gain: 0 to >70dB
  • THD+N: 0.25% (variable)
  • Frequency Response: 12Hz-70KHz
  • Max Output (1% THD+N): +26dBu
  • Typical EIN: -121dBu
  • Input Impedance: 1.5Kohm

  Tech Specs

  • Preamp Type:Tube
  • Number of Channels:1
  • Frequency Response:12Hz to 70kHz
  • EQ:Yes
  • Analog Inputs:1 x 1/4″
  • Weight:4 lbs.