Perreaux SM6 MKII - Manual (Page 20)

20
7 7 7 7
Special Design Features
Rugged Build
Quality
M echanical strength has been a hallmark of Perreaux products since the
company first started production back in 1974. The concept behind the physical
design and construction is that each structural member should contribute to both
rigidity and performance.
Balanced
Design
The SM 6 is a truly balanced preamplifier, from input to output. The positive
and negative halves of the signal never touch, remaining balanced throughout all
stages. This circuit topology offers the ultimate in performance, providing
increased noise rejection and lower levels of distortion.
Class A
Output
Four discrete output stages operating in Class A provide output buffering. This
enables low impedance loads to be driven, over long cable lengths using any
cable.
Multiple
Power
Supplies
There is a separate power supply for each section of the preamplifier. One for
each of the volume control chips (two chips are used to keep the system fully
balanced and therefore, to maintain separation, each chip is supplied with it’s
own separate power supply), another one for each of the output buffering stages
(once again because the SM 6 utilises a fully balanced circuit topology), another
for the digital logic and the final power supply looks after the input relays. The
advantage of this is that there is complete isolation from stage to stage. The
digital noise is kept completely out. This is further evidence of a thoroughly
designed product offering.
Infrared (IR)
Remote
Control
M any audiophile grade components are still provided with analogue controls
that are adjusted on the faceplate of the unit. The SM 6 features an infrared (IR)
remote control meaning you don’t have to get out of your chair to make an
adjustment. Some of the functions available are: standby, mute, volume
up/down, display on/off, input select and balance.
Earthing Perreaux engineers pay particular attention to designing the product to ensure
maximum separation between internal signal and power earths, only meeting at a
central starred point.
Precision
Volume
Control
The SM 6 uses two digitally controlled resistor ladder volume controls. This is
because we treat the positive and negative parts of the signal separately (true
balanced topology). The advantages of using a digitally controlled analogue
resistor ladder to adjust volume are precise control, no contacts to corrode
creating wiper noise and no analogue component drift.
Dual Outputs You do not need to purchase an RCA style splitter if you want to drive two
separate power amps simultaneously, as there are dual parallel preamplifier
outputs.