Perreaux Headphone Amplifier Silhouette SXH2 - Manual (Page 15)

14
Single
Channel
Block
Diagram
Input Stage Utilising a stable current source, along with accurate current
mirroring circuitry, the input stage of the SXH2, in combination
with the overall circuit topology, provides precise detail
resolution and definitive sonic transparency.
PCB Layout Special attention has been lavished on the PCB layout. The unit
is symmetrical in design with each channel being isolated from
the other. The super clean custom designed power supply is
physically segregated from the rest of the sensitive electronics.
Signal
Ground
Special attention has been paid to ground planes to maintain
sonic purity. All signal grounding is optimised to provide a
platform for a black background and increased dynamic range.
Gain
Selection
Two gain settings are available, enabling optimum performance
and listening levels to be achieved from both high and low
impedance headphones.
High Power
Output
The output stage is capable of delivering 1.0W
RMS
per channel
into a 64Ω load and is stable down to 4Ω, enabling the SXH2 to
effortlessly drive a vast array of headphones with the control and
authority that people have come to expect from Perreaux
products.
Dual
Outputs
Two stereo headphone jacks give the option of connecting two
sets of headphones, allowing another party to be enveloped by
the detailed and dynamic musicality of the SXH2.
Note: Please ensure that the resulting impedance of the two
headphone sets is not below 8Ω. Use the following
equation to calculate the total impedance: R
T
= (R
1
* R
2
) /
(R
1
+ R
2
).