Tuesday, May 3, 2011

Vdh The Grail SB
































€13000

Featurelist:
  • a specific designed Phonograph preamplifier section, unique in the world
  • Phonograph RIAA - equalization with coils only, no sound impairing capacitors in filters
  • special printed circuit board material with gold conducting paths
  • the printed circuit board has a special seating to evade microphonics
  • special equipment foot made of selected wood avoids mechanical energy storage
  • low noise moving coil input stage, no annoying noise even with low-output cartridges
  • automatic adapting input stage for moving coil cartridges, no matching resistors needed
  • possibility to compensate phonograph cartridge sensivity (level adjustment)
  • cut out of coupling capacitors in the signal path as far as possible
  • strictly separated amplifier sections and circuit layout deliver a very natural soundstage
  • inputs: two phonograph inputs, one for MC cartridges, one for MM or MC high-output
  • a shielded transformer is placed in an external housing to avoid hum and EMI noise
  • power supply with Gyrators for each amplifier stage deliver very high noise cancellation
  • the external transformer is available for different mains voltages 


Designed to provide high-end audio, “The Grail SB” will deliver you outstanding sound quality
with nearly every available modern phonograph cartridge.

Only available with a battery powersupply!:

Mains Power115 or 230Volt, 50/60Hz
Power consumption: 7 Watts
Temperature operating range: from 15 up to 30deg. Celsius Use only in dry rooms
Max. undistorted output voltage:25Vss (Accumulator driven version:19Vss)
Output impedance:  330 Ohms (real resistive)
Input sensivity values:for 250mV resp. 0,707Vss output level
on amplifier output
MM input:
Amplification factor 33dB: 5,6 mV
Amplification factor 41dB: 2,2 mV
Amplification factor 50dB: 0,8 mV
Input impedance: 47KOhm / 50pF
MC input:
Amplification factor 56dB: 0,4   mV
Amplification factor 64dB: 0,15 mV
Amplification factor 73dB: 0,05 mV
Input impedance: autom. matching from 40-400 ohm

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