LaChapell Audio Model 983S

2-ch Tube Microphone Preamplifier with >72dB of Gain, 48V Phantom Power, Auto-switching hi-Z Input, -20dB Pad, Polarity Reverse, and LPF/HPF
LaChapell Audio Model 983S image 1
LaChapell Audio Model 983S image 1
Sweetwater Savings: $150.00 MSRP: $2,400.00

Special-ordered from LaChapell Audio

Because this item is made to order, may take 4-8 weeks to arrive. Please note: special orders cannot be canceled or returned
Note: While most of the items we sell ship for free, this item does not qualify for free shipping due to special circumstances.

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LaChapell Audio Model 983S

Go from Clean to Warm and Saturated with This Tube Mic Pre

Count on the LaChapell Audio Model 983S 2-channel tube mic preamp to serve up impeccable sound quality and top-notch reliability. You get two channels of straightforward microphone preamplification in the Model 983S, plus an auto-switching hi-Z input to get fantastic direct recordings of your guitar or bass. Even your low-output ribbon mics will love this preamp, with over 72dB of gain on tap, plus lowpass and highpass filters to optimize your signal. And with separate input and output gain controls, the LaChapell Audio Model 983S can go from crystal clean to warm and saturated.

LaChapell Audio Model 983S 2-channel Microphone Preamplifier Features at a Glance:

  • High-quality tube preamplifier in a single rack space

  • Separate input and output knobs let you drive the input for warm tube saturation
  • 48V phantom power on each channel
  • Over 72dB of gain on tap - enough even for low-output ribbon mics
  • Streamlined design makes it easy to use both live and in the studio
  • Front-panel hi-Z input makes this an awesome DI for your guitar or bass too
  • Separate lowpass and highpass filters on each channel
Put world-class sound in your rack with the LaChapell Audio Model 983S!

What Does "Special Order" Mean?

A special-order product is one that we don't normally keep in stock. We order it from the manufacturer as soon as you order from us. We have great relationships with all the manufacturers we carry, so we can get your special order to you as fast as or faster than anyone else. Remember that special orders are non-returnable and non-cancelable, so make sure the item is right for you. A Sweetwater Sales Engineer can help you decide — call (800) 222-4700 for assistance!

Additional Media

Studio Preamp Buying Guide

Tech Specs

Preamp Type Tube
Number of Channels 2
Frequency Response 10Hz-70kHz
Phantom Power Yes
Analog Inputs 2 x XLR, 2 x Instrument
Analog Outputs 2 x XLR
Rack Spaces 1U
Height 1.75"
Width 19"
Manufacturer Part Number 983S

Customer Reviews

Based on 1 review
Write your review

Got that certain somethin' - somethin'

This is a more versatile mic preamp than some. It adds transformer harmonics and tube overtones that elevates a mic's presence. Vocals stand in front. Tube harmonics increase with level, so a VOX can be compressed and still project a sense of increased loudness during strident passages. Does a terrific job with ribbons, adding a condenser like edge to the upper frequencies..and it has more gain than most to drive them. I watch a scope and drive mine slightly hard with many vocals. The tube acts as a peak-limiter and it's harmonics appears to compress the sound a bit. Driven this way, vocals and transient instruments like acoustic guitars often don't need subsequent compression. Engage the -20dB pad even on normal level sounds and the input transformer is now well below saturation. You can hear it's extra harmonics drop away, producing a slightly more natural sound. Raise the post-transformer input level to compensate and the tube warms up the middle. I find this useful for acoustic recordings where the extra hype from the transformer isn't needed. This also tames brighter sounds a little...often enough to salvage what would have been a brittle recording. I don't want to overplay it's color, however. The pre is clean-sounding. At conservative levels, it sounds similar to a Great River...with just a hint of transformer color as compared to a super-clean FET pre. It becomes more of a creative tool as level is purposely increased and/or the -20 trick is employed. I'm in the habit of using extremely neutral mic pres. When I first put the 983 to work, I was a little nervous committing it's sound to a track and usually rolled with a neutral pre in parallel. The more I worked with it, though, the more confident I became. Now I look forward to using the LaChapell on lead instruments, lead vocals, and narrations. It does wonders to a U87, and any ribbon mic. Think of the LaChapell as converting solid-state mics to a tube design. Lot's of possibilities there! Try it on a very dynamic FET mic. Evens it out and fattens the sound. Nice! Some performances now sound a bit "ordinary" when run through the neutral pres. I normally avoid tube-on-tube, but the Pearlman TM1 changes character in a very nice way through the pre. It retains it's slightly dark nature, but has more air on top. Yet, it's mid-forward tendency makes many sounds become quite distinctive...standing out in a mix without much fuss needed. I highly recommend the 983S
Music background: Engineer, producer, Bassist, TV producer
See also: LaChapell Audio, LaChapell Audio Preamps