RUBY P1 PHONO AMPLIFIER DESIGN IMPLEMENTATION

DESCRIPTION

The RUBY P1 is a two-channel phono preamplifier module with very accurate RIAA equalization and many features. It is realized with the best semiconductors available and non-inductive, low noise, SMD metal film resistors. The circuit is designed to accept both moving coil (MC) and moving magnet (MM) transducers/cartridges directly in order to eliminate the need for an external MC step-up transformer or amplifier. MC/MM input loading, gain and input capacitance values are easy to select with high resolution DIP switches.

The Module is ideal for the most demanding applications requiring accurate RIAA equalization, very low noise, extremely low distortion and superior sonic performance. The RUBY P-1 module has been custom-built for Wyetech Labs by completely automated state of the art assembly methods using extremely precision components with tolerances to 0.1% accuracy.

Wyetech Labs Dual completely independent power supplies for each channel rendering the most accurate level attainable by any means. [far outperforms battery supply operation]

FEATURES

Compact design. Dual-mono. Very low noise. Single or Balanced output

Non-inductive low noise SMD metal film resistors [0.1%]

Input accepts moving coil/moving magnet (MC/MM) cartridges directly without step-up transformer

Input loading > 10 ? to 47k ? selectable in 21 steps

Gain Select > 40db to 80db selectable in 34 steps

High output drive. Balanced - 28V. Unbalanced - 14V

High accuracy RIAA equalization with 0.05dB tolerance

Selectable time constants of 3.18uS and/or 7950uS

Total harmonic distortion 0.0003%

Low output impedance [ 0.1 Ohm ] - drives long signal cables

Two-stage dual-supply voltage regulator on PCB board for each channel in combination with external DC power supply

Three-stage outboard power supply with 6 chokes and over 40,000 uf of filtering capacitance