S.E. "CLASSE A" inductive PSU AMPLIFIERS

RUBINA EVOLUZIONE

up to 74 dB amplification, 10 step-up transformers- up to 100 dB S/N, passive RIAA

 

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since 17-10-2007

 

 

RUBINA  EVOLUZIONE

the first PHONO STAGE in the world, for LOW voltage MC cartridges, without use of any VOLTAGE ACTIVE AMPLIFIER

 

 

 

 

RUBINA EVOLUZIONE

LINEAR MODULE

LINEAR MODULE 4:

4 transformers, amplification 44,5 dB

 

LINEAR MODULE 6:

6 transformers, amplification 61,5 dB

ACTIVE VOLTAGE AMPLIFIERS: NONE

  • minimum input voltage: 0,05 millivolt (50 microvolt)

  • 4 o 6 step-up trasformers: 2  MC input transformers - (mu-metal core and can), 2 interstage (mu-metal core and can) e 2 output (only for cartriges below  0,1 millivolt - see fig. 1 e 2 )

  • internal power supply with 8 inductive pi-grec cells and 6 resistive cells separated for each channel, bias and output stages

  • coupling via transformers and one or 2 emitter follower S.E. transistor stage used as impedance adaptor for extreme low noise and negligible THD and intermodulation distortion without the use of any Feed back.

  • Input MC impedance: 47-200 ohm

  • Input MM impedance: 47 KOhm

  • Switch for MM/MC selection

  • Frequency response:  20 Hz-25 KHz (-1,5/-0,5 dB @ 61,5 dB)

  • Maximum output voltage: 12 Veff

  • S/N > 95 dB with 6 transformer module

  • S/N > 105 dB with 4 transformer module

  • 6,5 mm chassis

  • metalized racing red finishing

PASSIVE RIAA MODULE

Amplification @ 1 KHz: 7,5 dB or 12,5 dB selectable

ACTIVE VOLTAGE AMPLIFIERS: NONE

  • 4  step-up transformers: 2 interstage, 2 output.

  • internal power supply with 4 inductive pi-grec cells and 10 resistive cells separated for each channel, bias and output stages

  • PASSIVE RIAA  powered by interstage transformers

  • RIAA 2% Polypropylene capacitors

  • coupling via transformers and one emitter follower S.E. transistor stage used as impedance adaptor for extreme low noise, and negligible THD and intermodulation distortion without the use of any Feed back.

  • max suggested input: 0,2 Vrms @1 KHz

  • accepted input: 0,5 Vrms

  • massima tensione di uscita: 4 Vrms @ 1 KHz - 8,5 Vrms @ 20 Hz

  • S/N > 105 dB

  • 6,5 mm chassis

  • metalized racing BLUE or GOLD finishing

  • total subsonic filter - 2 modules: -9 dB @10 Hz

 

VIEW of the interconnections between the 2 modules via RD MC cables

FIG.1 - BLOCK DIAGRAM OF THE COMPLETE ROYAL DEVICE AMPLIFICATION CHAIN FOR CARTRIGES of  0,07 MILLIVOLT as ortofon MC 20 - THE LINEAR MODULE HAS 6 TRANSFORMERS  - total Amplification  61,5 dB
                                                                                                                                                                      

 

                                                                                                                                                                       

 

                                                                                                                                              

 

 

                                                                                                     

                                                                                                                                                                       

                                                                                                                                                                        

                                                                                                                                                                        

 

FIG. 2- BLOCK DIAGRAM OF THE COMPLETE ROYAL DEVICE AMPLIFICATION CHAIN FOR CARTRIGES of  0,2-0,3 MILLIVOLT - THE LINEAR MODULE HAS ONLY 4 TRANSFORMERS  - total Amplification  57 dB

semplicity is where live real sound is released and no more reproduced