ASSISTANT 30 Integrated

Assistent 30 Integrated Amp
One of the original features of the Audio Valve products is to be found in the utilisation of the valves in such a way that they operate as closely as possible to their ideal reference values each according to its type. One recalls, for instance, the output pentode-triode PCL 805 and most particularly the small beam tetrode with a common cathode QQE 3/12. This valve with a noval (nine pin) base was manufactured formerly by Valvo, Philips and Telefunken and SIEMENS etc. (the latter was used in our test amplifier) It has a per plate power dissipation of 7,5 W and may be used with plate voltages ranging from 200 to 300 V. This valve, according to Helmut Becker, is ideally adapted to be integrated in a circuit which includes another very innovative concept, an automatically operating grid bias control, refered to as "ABR" and used to great advantage in the integrated amplifier Assistent - 30.
The amplifying circuit uses 12 valves, but the push-pull output stages are coupled to the specail unique ABR circuit for each power tube. This exclusive AudioValve feature, allows a comparison of the reference voltage value with that engendered by the quiescent current and which appears at the terminals of a small value resistance in the return cathode circuit. A small operation amplifier monitors, as comparator, the divergence and deliverers the compensation voltage to the grid of the valve. Each valve, young or old, reaching reference values or not is thus compensated in its Grid bias to operate at a value which corresponds to its optimal quiescent currant. A red shinning LED diode, at the foot of each value lights up preventing the use of inadequate or defect valves. For each channel the input stage and driver stage are served by an almost known noval valve, the double triode ECC 82 and ECC83.
techn. facts
Push-Pull 2 * 40W Sound, Stereo Tube Integrated Amplifier
Pure Class A operation - high precisition full automatic bias adjustment
NOS SIEMENS germany military high grade power tubes 8 pcs. QQE 03-12
input tubes: 2*12AU7, 2*12AX7
Most of super Highend fans also know this 's from AudioValve, the highest grade of amp.
main voltage: 110 V - 240VAC
Frequency: 20Hz-50KHz +/-3 dB
Signal/Noise Ratio: 90dB
ALPS volume control pot
Distortion: less than 1% at full power
Input Jack: 5 pairs cinch, switchable
REC - out
burn in time: 50-100 hours
Input Consumption: 150W
Size Dimenson:220 mm wide x 360 deeph x 230 mm high
Weight: 12kg  
Best of all: Germany's best address for output transformers - Pikatron - in collaboration with Audio Valve develop the ultimate higend output transformer designed for the Assistent 30 and gives the amp a superior sonic and hightech measurement characteristics.
One of the leading European manufacturer of transformers produce for the AudioValve model Assistant 30 the
output transformers - Pikatron.
you can not get any better in this world .....


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