Finest
Quality
Components
Used
Throughout
The Power
Supply
Simple control functionality
Single
Channel
Block
Diagram
Ultra Short Signal path
Input Stage
PCB Layout
Signal
Ground
The SX25 features a 98VA toroidally wound mains transformer directly soldered to the PCB, Wima / Elna brand capacitors, highest quality Zobel network and customized internal heat sink solution. The PCB is double-sided and constructed from the highest quality fibreglass base stock featuring 2oz tracks.
Perreaux has specially developed a fully shielded 98VA internal toroidal based power supply. No fewer than six filter capacitors are coupled in parallel providing a total of 13,200uF of power supply smoothing, keeping ripple to a minimum. As a result the power supply is extremely rigid, capable of delivering instantaneous power requirements demanded by musical transients. The result is significantly improved dynamic capabilities.
Front panel features on/off LED indication. The rear panel comprises a mains input receptacle, allowing the cord set to be upgraded if desired, mains switch, high quality speaker binding posts, RCA line input and line output.
Careful attention has been paid to the signal path within the amplifier. It is ultra short, guarded by ground planes where necessary and carefully routed to avoid contamination from power supply and high current bearing sections.
Utilising a stable current source, along with accurate current mirroring circuitry, the input stage of the SX25, in combination with the overall circuit topology, provides precise detail resolution and definitive sonic transparency.
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.
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.
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