Audio Technologies

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# 2 λυχνίες εξόδου ανά κανάλι σε push-pull διάταξη # Κατασκευασμένοι στο εργαστηριό μας υψηλής ανάλυσης μετασχηματιστές εξόδου # Μονοφωνική λειτουργία


Τα στάδια εισόδου χρησιμοποιούν τρείς διπλοτριόδους λυχνίες, μία 12ΑΧ7 και δύο 12ΑU7.

Τα στάδια εξόδου χρησιμοποιούν δύο 6L6GC λυχνίες που παρέχουν 50W ανά κανάλι.

Ο στερεοφωνικός τελικός ενισχυτής VA-50 έχει έναν πολύ συμπαγή σχεδιασμό.

Η διαμόρφωση του σασί περιλαμβάνει τον 200VA τοροειδή μετασχηματιστή τροφοδοσίας και δύο μετασχηματιστές εξόδου.

Όπως και στα άλλα μοντέλα της Audio Technologies, πηγές συνεχούς ρεύματος στα στάδια εισόδου βοηθούν στη διατήρηση σταθερών χαρακτηριστικών οδήγησης και ισορροπίας του σταδίου εξόδου.



# 2 output power tubes per channel in push-pull configuration # Made in our laboratory high definition output transformers # Monophonic mode


The input stages has three double triodes tubes, one 12AX7 and two 12AU7.

The output stages with two 6L6GC tubes provides 50W per channel.

The stereo power amplifier VA-50 has a very compact design.

The chassis configuration houses the 200VA toroidal power transformer and two output transformers.

As with other Audio Technologies models constant current sources in the input stages help maintain stable drive characteristics and balance of the output stage.

The VA-50 vacuum tube power amplifier is capable of high level resolution and control over any loudspeaker with vivid and natural presentation.

The VA-50 vacuum tube power amplifier delivers modern performance standards, with all the features to meet the needs of today’s music.

As with all Audio Technologies amplifiers, the VA-50 will provide ultimate stereo separation.

50 watts of power is output into a speaker load with less than 0.5% distortion.

A rear switch parallels the channels and the VA-50 becomes a monophonic amplifier with double output power.

A small amount of negative feedback is applied.

Audio Technologies special design provides very low distortion, extended frequency response and long tube life.

VA-50 oversize power transformer provides high power and dynamic response from two 6L6GC output tubes, setting a high performance on tube amplification.

Balanced and unbalanced inputs allow matching with all solid or vacuum tubes preamplifiers.





FREQUENCY RESPONCE: -0.25db points from 40 to 30KHz.

DISTORTION: Less than 0.3%@10WRMS output.

POWER: 2x50WRMS@8ohms, 100WRMS in monophonic mode @4ohms load resistance.


INPUT SENSITIVITY: 1.5V for maximum output.

NOISE: -105db.

PROTECTIONS: Overload with fuses, input limiter.

TUBES: 12ΑX7(1) 12AU7(2) double triodes, 6L6GC(4) beam tetrodes.

POWER REQUIREMENTS:  115VAC & 230VAC 50/60 Hz, 200W maximum.

DIMENSIONS: 37x22x12cm.

WEIGHT: 17kg.



VA-50  vacuum tubes stereo power amplifier

Text Box: Copyright 2012 Audio Technologies, Miltiadis Logothetis Laboratory, All Rights Reserved.
Rounded Rectangle: VA-50 pictures###and measurements

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