
PREFACE
CONGRATULATIONS. You have just acquired one of the most advanced audio components ever
developed.
Your SAE 2HP-D was designed to set new standards in virtually every performance category. Not only does the 2HP-D
utilize a dual-differential balanced design, to our knowledge, it is the world’s first amplifier to be balanced both electrically
and physically. Each circuit board in the active signal path is designed with mirror imaged traces with the ground-point, the
fulcrum of the design, positioned at its absolute center.
Other significant advances in the amplifier include:
1. Dual mono design with separate and independent power transformers, power switches and line cords;
2. High temperature (Class F rated) toroidal transformers each with 1930 VA;
3. Separate and independent transformer windings for the input and output stages;
4. Independent transformer windings for each half of the balanced amplifiers;
5. Independent bridge rectifiers for each half of the balanced amplifiers;
6. Four layer circuit boards used throughout; each with separate power and ground planes;
7. Mirror imaged board layout with a perfectly centered ground point.
The circuit is both electrically and physically balanced;
8. Solid copper bus bar;
9. Current feedback for improved amplifier control and virtually unlimited slew rate;
10. Double transistor input stage;
11. Dual-DC Servos virtually eliminate any DC offset;
12. ThermalTrak output devices optimize bias in real-time;
13. All protection circuitry is optically coupled and outside the circuit path. It is self-resetting;
14. Built-in distortion limiter compares amplifier input
and
output and supply voltage to output voltage before engaging.
When engaged, amplifier clipping is eliminated and THD cannot exceed 1%;
15. User selectable forced air (fan) cooling may be engaged or disabled as necessary.
16. Virtual VU and Frequency Spectrum Display Meters. These meters uniquely show the amplifiers instantaneous peak
power output and average power output simultaneously without the inertia that causes inaccuracies in mechanical meters.
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Содержание 2HP-D
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