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comments
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DAC+Ev33
INPUT USB , SPD/If coax and optical or
I2S- Analogue stage as Ev33 |
Ev33
Ev33
is an EXTERNAL ANALOGUE MODULE to be connected directly to the DAC
CHIP output. See detail for application
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DAC+Ev33
comparison toward a 3 chassis
50,000 euros player, maybe you kow it
the faces
are of course full of laughing especially when the other 15,000 euros
player got its chance to let his voice out.
The next
one is owned by one of these 2 guys. He took it of course as joke
spending so much money for nothing and this is the best way to face the
reality, else he would normaly hang itself
ofaces
completely restored and relaxed when the DAC-EV33 has revealed the
truth
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Two solutions for the Ev33 , each one need to
connect the Ev33
internally to the DAC or the CD player, completely eliminating operational
amplifiers, discrete or tube in the internal analogue output section.
While the
DAC+Ev33 has on
its own an internal 24/192 DAC with a 120 dB s/n made only by transformers
Ev33 it can be connected
to any pure PCM current output DAC CONVERTER (starting from 1 mA output),
ACTIVE VOLTAGE
AMPLIFIERS:
NONE
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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
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internal power supply with
8 inductive
pi-grec cells and
6 resistive cells
separated
for each channel, bias and output stages
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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.
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minimum input current: 1 mA
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Input impedance: 300 ohm - need 30 ohm
external load into the DAC output section
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Frequency response:
12 a 80 KHz (-1 dB)
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Maximum output voltage: 5 Vrms - standar
setting 2,5 Vrms
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minimum load > 700 ohm- Standard external load
10 Kohm with 3 Kohm internal load
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S/N > 95 dB
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6,5 mm chassis
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metalized racing blu finishing - front and
back mirror finishing stainless steel
INTERNAL Ev33
BLOCK DIAGRAM
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Ev33
before
assembling into the the final BLUE metalized chassis
the
Ev33
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 )
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HERE FOLLOWS
some of the modified CD or SACD or DVD players
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In thi section
we had the possibility to compare 4 players all, umodificed with its own
external Royal Device EV3 module
A Phlips 960 on
the left, a ONKYO INTEGRA on the center a ROTLA with PCM 63 on the right.
till there is the CD 85 MArantz of the Royal Device audio room on the
back
The players
where suing their own
UDIN CD
syncronized together. by means of a switch placed on the listening
position, it is possible to swithc from one to the other.
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ONKYO GRAND
INTEGRA DX-G10
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ROTEL dotato di convertitori
PCM 63 (PCM a 20 Bit)
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Philips 960 on the left
connected to the EV3 and the ionternal view with inductive power
supplies on the DAC and antijittering clock..
 
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DENON DVD
2930 with internal Burr
Bown PCM 1791 DACs
back view
of the interconnections with the external EV3.
Here an External DAC using the 24/192 CS4396 chip
another External DAC using the Burr Brown PCM 63
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CALIFORNIA
AUDIO LABS SIGMA using CS 4328. All the internal tube and filtering with
the uA 741 operational amplifier has been completely overpass.
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ONKYO DVSP
503E on the right using Burr
Bown PCM 1742 and a MARANTZ CD 85 on the left
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