Lachapell 983S Dual Tube Mic Preamp

The LaChapell 983S MK2 is a two channel tube mic pre featuring the innovative True48 dynamic phantom power supply for improved performance from your condenser mics. Along with the 983M, the 983S MK2 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.

Each channel on the LaChapell 983S MK2 features a Cinemag input transformer, an ECC83/12AX7 vacuum tube, Jensen output transformer and Burr Brown & THAT Corporation line drivers. Each component in signal path is of the highest quality, carefully selected to sound beautiful and last long.

The LaChapell 983S MK2 mic pre is capable of stunning clean tones and harmonically rich driven tones. Exceptional on nearly any source, the 983S MK2 features high and low pass filters with selectable roll-off frequencies, channel mute, front panel Hi-Z input, pad and polarity switches.

Features:

• DUAL DRIVE KNOBS

The Dual Drive knobs on the 983S mic pre provide an incredible array of tonal options. The input knob drives the input to the first vacuum tube and the second knob drives the input to the output tube. Together, you can dial in sounds from pristine to warm and harmonically rich.

• TRUE48 Dynamic Phantom Power

True48 is a dynamic phantom power supply that provides a steady power supply for your contender and active microphones. Standard phantom power supplies often do not deliver enough power for todays microphones. True48 ensures your mics get the power they need which results in higher headroom, quicker transient recovery, and smoother response.

• PAD SWITCH FOR MORE TONAL OPTIONS

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 and dial in warm tones with lots of headroom.

• 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.

• LOW NOISE AND OUTPUT IMEDANCE

The ultra low output impedance of the 982S 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.

• HIGH AND LOW PASS FILTERS

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

• 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.

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• Internal Gain: 0 to >72.5dB
• THD+N: 0.01% (minimum)
• Frequency Response: 9Hz to 40KHz
• Max Output (1% THD+N): +26dBu
• Typical Ein: -124dBu
• Input Impedance: 1.5KΩ
• Tube Compliment: 2 x 12AX7 / ECC83
• Transformers: Cinemag Input Transformer, Jensen Output Transformer