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LaChapell Audio 992EG Dual Mono Tube Preamp - Used  From LaChapell

If you're after the best of the best in dual mono tube preamplification, you're looking for the LaChapell 992EG! Creamy, rich, round, yet detailed - the 992EG is everything you want and expect in a world-class tube preamp! This unit has been professionally modified, (including tube biasing) with spec sheets shown in photos. In Used, Very Good to Excellent Condition. 


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LaChapell Audio


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What We Think

"The LaChapell 992EG is the crème de la crème in the world of high voltage stereo tube mic preamps. Achieving the difficult and delicate balance of rich/creamy tube sound with an incredibly high level of detail places the 992EG in an elite club that few others can claim to be a part of."

Manufacturer's Description from LaChapell

Extended Gain 992:
Utilizing the Jensen JT-115k input transformer and two ECC803/12AX7 vacuum tubes per channel. This configuration provides >74dB of gain (usually about 76db ...) with a typical non-weighted EIN of -124 to -126dB referencing 150ohm. All other design elements are the same.

- Amplifier Isolated Meters
-Seperate Input/Ouput Gain Controls
- Hiz Instrument Inputs
- Jensen JT-11 Ouput Transformer
- Individual Channel Mutes
- Extremely Robust Construction
- Fully Balanced Ciruitry

Stock Configuration:

Dual ECC803's: Both 1st and 2nd stage using new production JJ Tesla long gray plates.

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.


* Internal Gain:0->74db

* THD+N @50db: >025%

* Frequency Response: 10hz-100khz

* Output Gain: +24bdu

* Input Impedance:1.4kohm

* Tube Compliment:
(Four)- ECC803/12AX7
(Four)- 12AU7

Weight: 26lbs

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