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S.E.
"CLASSE A" AMPLIFICATIONS
BLU EYES
RUBINA
phono
stage
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since
1-12-2003 |
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WINS the
AWARD of the years 2005-2006 from the
ONLINE magazine www.videohifi.com
COMPLETELY NO FEED BACK even locally SINGLE ENDED CLASS A Junction FET
PASSIVE RIAA PHONO
STAGE
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BLU
EYES RUBINA
the 4 mm
STAINLESS STEEL CABINET BLU EYES RUBINA phono STAGE
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V
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The
Blu Eyes Rubina
is derived from the professional RUBINA PHONO STAGE. It features a smaller
cabinet in shining staiNless steel BUT NO Step-up neither OUTPUT transformers.
Suites to all MM anc MC cartridges with an output level above 1 milliVolt, and
it can drive even power amps with at least 0,5-0,6 volt input sensitivity. If
connected to a preamp the possibility to drive also cartridges with output level
of 0,5 millivolt is possible instead. The
reason to use a JFET circuitry instead of tubes it is due to the high gain
obtainable without the use of Feed back, still keeping a very low noise. Moreover, with discrete JFET circuitry we can afford valve sound without entering the microphonicity
problems. Metalized polypropilene 2% capacitors used onto the Passive RIAA circuit. Only discrete components. No ICs or SMD used at all. Please see
schematics hereafter. |
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Phono Input |
MM/MC high level |
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Input Impedance |
MM/MC
high level
47 Kohm |
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Frequency Response |
25Hz to 20,000Hz
+/- 0,3 dB; SUBSONIC PASSIVE FILTER - 2,5 db @ 20 Hz |
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Harmonic Distortion |
less than 0.2% |
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MM Sensitivity |
1 mVolt input for
0,2
Volt output @ 1 KHz (46 dB) - 54 dB on
request. |
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Total MM gain
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46 dB |
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Output impedance |
minimum 600
ohm load - suggested above 1500 ohm |
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Maximum
Output Voltage |
2,9 Vrms on 600
ohm load - 5 Vrms on 1500 ohm
load |
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Amplification |
Two stages
JFET Single Ended
NO FEEDBACK even locally - grounded source modality. |
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MC S/N Ratio |
93 dB S/N measured
in respect to max output |
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Power Consumption |
1,5 W
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24 Vac through external transformer |
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Dimensions (W x D x H) |
150
x
75 x
50 mm |
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Weight |
1,3 Kg
- 3 pounds |
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Chassis Finish |
SHINING STAINLESS
STEEL
Die casting
4 mm |
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Remarks |
Inputs for MM and MC high level cartridge
- PASSIVE RIAA
- Any channel and stage with completely separated
internal power supplies - RIAA with Royal Device AUDIOCAP polypropilene capacitors
2% and 1% resistor -HIGH END Connectors - External p.s.u. transformer
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PAGINA
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