Assistent 100 – Mark 2
integrated tube amplifier_ ___________
Introduction to AudioValve
All AudioValve products are designed by Helmut Becker and feature
advanced, modern circuitry, combined with the superb sound of
valves. Now it is no longer necessary to sacrifice one to get the other.
Combining the finest in modern valve technology with sophisticated smartbias
circuitry, AudioValve brings you the best of both worlds - and more.
With contemporarily-styled chassis built from 4 & 5 mm laser-cut steel, every
amplifier and pre-amplifier we manufacture utilises double sided PC boards
and automatic bias regulators to ensure a continuously uniform current flow
to and a perfect match between all the valves throughout their entire life,
even as the various valves decay at different rates.
Unlike other valve amplifiers, where a certain amount of guesswork and
experience is required to know when valves need to be replaced, with
AudioValve amplifiers not only do valves not have to be removed
prematurely (prior to burn out), but when burnt out does occur, only the bad
valves need to be replaced. The amplifier will automatically adjust and
distribute the total current flow to optimally match the new configuration.
AudioValve amplifiers always deliver nothing but the most advanced,
economical, high quality valve sound. Power output valves in most models
may be varied among several different types with no modifications to the
units, so that an appreciable degree of sonic system matching and user
preference may be accommodated.
No matter what combination of valves one uses (differing valves, new valves, old valves),
one will experience at all times the balanced and coherent sound of amplifiers working
with brand new, perfectly matched valves. The bonus is that there is never any need to
use a meter or screwdriver to adjust bias on any valve in any condition of
operation. AudioValve
�
s smart - bias circuitry is the best and most
unobtrusive available!
The ASSISTANT 100 amplifier represents exceptional value for money. We
have designed and manufactured this power amplifier to faithfully and
accurately reproduce music. The high quality of components used and
advanced valve operational principles employed in this design ensures that
you will enjoy the superb audio performance and pride of ownership,
inherent in such a hand-crafted product as this, for many years to come.
BIAS AND PCB
Traditionally, valve biasing is performed with a screwdriver to adjust the bias
current to the valve. Any such adjustment can only be optimum for an
instant as valves, even selected ones or a matched set, cannot hold a
consistency of performance in the long term. Each valve will deteriorate
individually and, if in a set, not necessarily in the same way as others in that
set. A matched pair or quad will therefore only remain matched for a
relatively short period of time!
Helmut Becker of AudioValve has developed a unique valve biasing circuit
that automatically monitors, biases and controls each valve independently
thereby maintaining any number of valves at their optimum performance
level. These valves do not even have to be of the same type or condition.
This is AudioValve
�
s Automatic Bias Regulator (ABR) circuit, a feature that
Summary of Contents for ASSISTENT 100 Mark 2
Page 1: ......
Page 18: ...Assistent 100 Mark 2 integrated tube amplifier_ ___________...
