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  Ev³  is an EXTERNAL ANALOGUE MODULE  to be connected directly to the DAC CHIP output (current mode). See detail for application

Two solutions, each one need to connect the Ev³ internally yo the DAC or the CD player, completely eliminating operational amplifiers, discrete or tube in the  internal analogue output section. 

it can be connected to any pure PCM current output DAC CONVERTER  (starting from 1 mA output),

ACTIVE VOLTAGE AMPLIFIERS: NONE

• 2 step-up trasformers per channel - each one driven in CURRENT MODE (NOT Current generators). The 2 Single ENDED transistors are UNable to control the current thru the low input impedance of the transformers (36 ohms), so avoiding current local Feed Back.  The S.E. transistors are fed by means of 8 INDUCTIVE pi-grec cells. The signal transformers used are the new Royal Device RD 15 -4 

• 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.

• minimum input current: 1 mA

• Input impedance: 300 ohm - need 30 ohm external load into the DAC output section

• Frequency response:  12 a 80 KHz (-1 dB)

• Maximum output voltage:  5 Vrms - standar setting 2,5 Vrms

• minimum load > 700 ohm- Standard external load 10 Kohm with 3 Kohm internal load

• S/N > 95 dB

• 6,5 mm chassis

• metalized racing blu finishing - front and back mirror finishing stainless steel

INTERNAL Ev³ BLOCK DIAGRAM

Ev³ frequency response:  +2 dB @ 15 Hz / -1,2 dB @ 80 KHz

10 KHz square wave response: 4,4 microseconds

 Ev³  before assembling into the the final BLUE metalized chassis

the Ev³ connected to the CD 85 player in the ROYAL DEVICE audio room

(internal TDA 1541 A S1 power supplies  fed by 3 inductive pi-grec cells )

where analogue and digital at last meet together