T+A PS 3000 HV User Manual - page 19
19
Introduction
The PS 3000 HV is a supplementary mains unit which was developed specifi -
cally for the A 3000 HV power amplifier and the PA 3100 HV integrated amp.
Both devices deliver more than 500 Watts of power into 4 Ohms, and at such a
high level of sound quality and performance that simply increasing the output
power - and with it the voltage - produces no significant improvement in sound.
Our research and development work in high-performance amplifiers - including
the M10 and S10 - and the development of the HV design philosophy which
flowed from this work, have shown clearly and unambiguously that the stability
of the voltage and current supplied by a mains unit is of major and even crucial
importance to the sound quality of an power amplifiers. From this we have
drawn the only rational conclusion, and developed a supplementary external
power supply.
The principle is ingenious, and functions in the following way: if the PS 3000 HV
is connected to the A 3000 HV / PA 3100 HV using the special Power- Link with
M 23 high-current connectors, the internal power supply of the amplifer is used
to supply energy to the input stages and the high-voltage amplifier;
much lower power is required for this part of the system, and as a direct result
the interference generated in the A 3000 HV / PA 3100 HV itself is much lower.
The external PS 3000 HV supplies the energy for the amplifiers output stages,
i.e. it is responsible for the high currents required by the power output stages.
With an output of 1200 VA the PS 3000 HV is substantially more powerful than
the mains unit of the A 3000 HV / PA 3100 HV itself, and can also call upon
twice the reservoir capacity. The net result is a substantial improvement in the
current delivery capacity and stability of the system as a whole.
The great advantage of this arrangement in terms of sound quality is that the
A 3000 HV / PA 3100 HV is effectively isolated from the load currents and
mains-induced interference which can have an adverse effect upon sound
quality. The PS 3000 HV is controlled completely by the connected device via
the HLink bus and the Power - Link connection.
Functional principle