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M20 Preamplifier


Massachusetts USA



True dual mono differentially balanced independantly buffered preamaplifier

Power Supplies

3 Class A linear power supplies


Proprietary, all discrete resister ladder attenuation


Ceramic circuit boards

Balanced Analog Inputs/Outputs

2 XLR balanced (pin 2 hot)

Unbalanced Analog Input/Output



0.0007% 20-20k typical

Max input level

+20 dbu Balanced

Max output level

+23 dbu Balanced, +16 dbu unbalanced

Input impedance

200k ohm


> 120db


90 db in 1 db steps from 0 to -89db.

About our Preamplifiers

Preamplifiers (also commonly refered to as *Line Stages*) are the central hub for your stereo. Most believe the role of the preamplifier is to select a source and control the volume, and while thats true, its role is far more important than that. In its simplest form, the job of a preamplifier is to transfer an analog signal from a source to the amplifier. Doing this correctly is actually very tricky. Audio signals are very low in voltage and need to be boosted before being sent to the amplifier. The first real benefit of a good preamplifier is that it can add gain to the signal and stabilize it without introducing noise or distortion. This can only be done with well engineered power supplies, circuitry and the use of high quality components. Keep in mind, this is only to stabilize the audio signal internally and is not seen or used by the listener. The listener, on the other hand, wants to crank it up and listen to the stereo loud! Nor not. It changes from minute to minute, song to song. So although the volume control is a gain setting, it is dynamic and changes all the time. If you think designing the internal gain system was difficult, you can imagine how hard it is to design a volume control system that does not add distortion or noise. And quite honestly, almost all preamplifiers do add some. But the best of the best use proven, although expensive, designs to pass the signal through at any gain level without adding anything bad to the signal. It doesn't matter how well your turntable or DAC performs if the preamplifier distorts the signal on the way through. It is as simple as that. Preamplifiers are overlooked by many but should be considered the heart of the system. It is easy to add or replace sources or amplifiers, but your music will only sound as good as the preamplifier allows.


Based in Massachusetts, Bricasti Design is world famous for their audio products. First gaining fame for its famous M1 DAC, Bricasti has upped the ante with both an upscale DAC along with a more economical model, the M3. All products are designed and built in the USA and able to be easily updated as technology improves. For unmatched performance and service, Bricasti Design is an easy company to partner with.

Contact Us

Our Location

Minneapolis, Minnesota

Phone Number