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983M SINGLE CHANNEL TUBE PREAMP

HALF RACK SINGLE CHANNEL TUBE MIC PREAMP

The full LaChapell experience in a portable package. 

The LaChapell Audio 983M is a half rack (with optional dual rack kit) single channel tube preamp that is perfect for small studios, podcast studios, voice overs, and session musicians. Along with the 983S MK2, the 983M is the first preamp to feature True48™, a phantom power supply that provides a consistent 48V for phantom powered mics. Current 48V supplies dip in voltage as the source load changes (such as periods of high transients on many mics). True48 evens out the voltage supply, giving mics greater headroom, quicker transient recovery and a smoother less distorted response. 

The LaChapell 983M is capable of stunning clean tones and harmonically rich driven tones. Exceptional on nearly any source, the 983M features high and low pass filters with selectable roll-off frequencies, channel mute, front panel Hi-Z input, pad and polarity switches.

FEATURES

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DUAL DRIVE KNOBS

The Dual Drive knobs on LaChapell's preamps provide an infinite array of tonal options. Favoring the input knob increases the signal going to the tube, resulting in more harmonics and overall distortion. Favoring the output knob yields a very clean signal. Together, you can dial in sounds from pristine to warm and harmonically rich.

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VERSATILE TONE WITH PAD

The pad switch not only provides a -20dB gain reduction for high input sources, it also works with

the Dual Drive knobs to create color and headroom options. Engage the pad to dial in warm tones with

lots of headroom.

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TRUE48 Dynamic Phantom Power

Standard phantom power supplies often do not deliver and maintain sufficient power for today’s microphones. True48 is a custom circuit that ensures your mics are never starved for power, resulting in higher headroom, quicker transient recovery, and smoother response.

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HIGH AND LOW PASS FILTERS

Independent High and Low Pass Filters maximize control over your recorded or live signal.

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BEST IN CLASS PERFORMANCE

Everything in the 983S mic pre is designed to be best in class. Every component, transformer, wire and tube has been meticulously selected for performance and longevity.

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LOW NOISE AND OUTPUT IMPEDANCE

The ultra low output impedance of the 983S mic pre means you can run long cables from the stage to front of house or from studio room to studio room. The ultra low noise means you can record any source with confidence that you are only recording what you WANT to record.

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FRONT PANEL HI-Z INPUT

The front panel Hi-Z input allows you to plug a bass or other instrument directly into the 983S. As an instrument front end, the 983S allows for natural tube compression and harmonics to any input source.

PRODUCT SPECS

INTERNAL GAIN

THD+N

FREQUENCY RESPONSE

MAX OUTPUT (1% THD+N)

TYPICAL EIN

INPUT IMPEDANCE

TRANSFORMERS

TUBE COMPLEMENT

0 to >72.5dB

0.01% (minimum)

9Hz to 40KHz

+26dBu

-124dBu

1.5KΩ

CINEMAG CMMI-10PCA (INPUT)
JENSEN JT-11-DM (OUTPUT)

1 x 12AX7 / ECC83

983M USE EXAMPLES

Click the button below to see some examples of how the LaChapell Audio 983S tube mic preamp can be used in the recording studio.

983M USER GUIDE AND DOWNLOADS

983M RAVES & REVIEWS

“I’ve been using LaChapell Audio mic preamps for a number of years.  The one word that comes to mind that’s consistent throughout the line is 'versatility.' All of the mic preamps have 2 distinct flavors based on where they interject the 20 dB pad.  Without the pad engaged you get a big, open, warm, full-of-transients sound that’s lovely on just about everything.  With the pad engaged you get a tight, slightly compressed, less transients sound that works on everything else.  They are definitely my go to mic preamps.   When I don’t use them It’s just because I don’t have enough of them.” –  Mark Polack, Mixer/Engineer/ Bassist/Programmer/Songwriter (Kenny Loggins, Richard Marx, Paul Carrack, John Oates, Reggie Young, Mark Knopfler, Felix Cavaliere)

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“I’ve been using the 992 now for several years and it is my “go to” mic/line instrument preamp for all of my recordings. It is clean and any mic or instrument that I plug into it sounds good. I use it for acoustic guitars, vocals and other instruments as well. It is a fine piece of professional recording gear that I highly recommend!” 

 Phil Keaggy, Guitarist