GALA is a power tube amplifier no compromise, which is made in two units, one power supply and one power amplifier.
Both of them are entirely with tubes. The power supply includes:
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One stabilized circuit high voltage 360V 300mA
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Four stabilized circuits low voltage: two 5V 2A, one 12V 1A, one 80V 50mA.
The power amplifier includes both channels, left and right.
Each of them is a push-pull of triodes 300B working in class A over the whole power and frequency range. The separation in two units allows:
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To reduce the electric noise
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To mantain quite low operation temperature of the audio stages
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To eliminate the coupling of the transformers fluxes
GALA has the following additional characteristics:
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No negative feedback
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Stand by function
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Automatic adjustment of BIAS: an electronic device mantain the BIAS within ±1% of the nominal value
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