Products The GRAIL
With this product you will be the owner of one of the most innovative and advanced phonograph preamplifier's available at the moment. “The Grail” is a really dulcet phonograph preamplifier, specifically designed bearing ultimate performance and reliability in mind.
The Grail A is a batteries power supply version.
The Grail SB is a fully balanced version only with batteries power supply.
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” will deliver you outstanding sound quality with nearly every available modern phonograph cartridge.
TECHNICAL SPECIFICATIONS :
Mains Power 110 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 appr. 40 up to 400 Ohms