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User manual for MERUS™ MA12070 musical instrument bass
amplifier
DEMO_BASSAMP_60W_MA12070
Board overview
1
Board overview
The MA12070 musical instrument bass amplifier is a wall-adapter or battery-powered, 60 W, professionally
featured and ultraefficient pocket-sized bass instrument amplifier. It is modeled after classic vacuum-tube bass
amplifier topology. It utilizes the exceptional audio quality and best-in-class efficiency of Infineon's MERUS
amplifier technology
(Infineon class D audio amplifier solutions)
tube pre-amplifier.
It incorporates a 12AU7/ECC82 vacuum tube for real-tube class-A amplification, which is run at low plate-
voltage, excluding high-voltage generation circuitry, and the ultrahigh fidelity
audio power amplifier.
The design is made for direct use as a self-contained amplifier head or as a combo including a speaker. It only
requires an external +24 V regulated power supply.
Figure 1
MA12070 musical instrument bass amplifier
Figure 2
Block diagram
Please see the Infineon application note
User Manual
MA12070 musical instrument bass amplifier
2 of 13
to amplify every nuance of a real vacuum-
MA12070
multilevel switching
for further details.
TM
V 1.0
2020-05-28
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