LaChapell Audio 983s Two Channel Tube Preamp  From LaChapell

Two channels of LaChapell's renowned 583 preamp ciruitry in a 1U rack unit. 

LaChapell Audio

$1,999.99

Retail:  $2,400.00

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LaChapell 983s Review at SoundPure Studios

In this video, Todd Atlas and Allen Palmer from SoundPure Studios, review the 983s Model microphone preamp from LaChapell Audio. The Model 983S is a high quality tube preamplifier that integrates many of the key features that distinguish LaChapell Audio studio gear in a package developed for personal and professional studios as well as live sound applications. If you like what you hear, check out this gear at SoundPure.com, or give us call anytime at 919.682.5552. Thanks for watching!

  • Signal Chain
    • LaChapell Audio 983s Two Channel Tube Preamp

Manufacturer's Description from LaChapell

Based on the 583S, this two channel tube preamp brings LaChapell Audio quality to a single rack space. 

The Model 983S is a high quality tube preamplifier that integrates many of the key features that distinguish LaChapell Audio studio gear in a package developed for personal and professional studios as well as live sound applications. Based on the popular 583S, the 983S offers 2 channels of tube amplification in a single rack space unit.
 
In addition to the low profile single rack space design, the 983S has an ultra-low output impedance for unparalleled sound transfer across long cable runs such as are common in theaters and remote systems. You will find many of the features you expect from a piece of LaChappel Audio gear, including:
 
  • Input and Output knobs to dial in the perfect balance of warmth and definition for any application
  • 48V Phantom Power on each channel
  • Easy to access and identify illuminated front panel pad, polarity, mute and phantom power switches
  • Front panel Hi-Z input with auto-switching
  • Low pass and high pass filters on each channel
LaChapell Audio

About Manufacturer

With the 992 you have the option of choosing between two unique input topology configurations. Standard 992: Featuring a transformer-less balanced differential input utilizing two USA made 6072A's per channel along with twin matched 400v caps. This configuration provides >50dB of gain (usually about 52db) with a typical non-weighted EIN of -114 to -116dB. Extended Gain 992: By replacing the input caps with the Jensen JT-115k transformer and exchanging the 6072's for the timeless 12AX7/ECC83 this variant is able to provide a generous >74dB of raw internal gain with a typical EIN of -124 to -126dB referencing 150ohm. The direct instrument input (Hi-Z) on both variants utilizes a high performance Jensen direct transformer which feeds the balanced differential amplifier input. In operation, the user has individual control over the input and output gain stages of each channel. This provides uncommon flexibility to delve into the 992?fs broad sonic pallet making it one of the most versatile preamplifiers in any environment. Push the inputs hard and capture that elusive air that can only come from fully balanced tube gain. Or, pull the inputs back and favor the output stage for a cleaner, more linear signal - the choice is yours. Output signal strength is easily monitored through an isolated Sifam back-lit VU meter. There are also five illuminated toggle switches per channel for Meter On/Off, 48v (Phantom), -20db input pad, phase reverse and Mute.

Specifications

Internal Gain: 0 to >72dB
THD+N: 0.25% (Variable)
Frequency Response: 10Hz to 70KHz
Max Output (1% THD+N): +26dBu
Typical EIN: -122dBu
Input Impedance: 1.5KΩ
Tube Compliment: 1 x 12AX7/ECC83