| Description: |
The Preface Plus uses the best sounding op-amps from Burr – Brown and Panasonic Gold Series ultra low ESR caps. The power supply use the finest sounding regulators from Linear Technology and custom made mains transformers. Full emersion gold Printed Circuit Boards and “ Melf ”
Professional series surface mount precision resistors.
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TECHNICAL SPECIFICATIONS |
| Electrical
THD + N :
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Less than 0.0006% ( -106dB ) at 1KHz. 22Hz to 22KHz bandwidth
Less than 0.0015% ( -94dB ) at 1KHz. 10Hz to 500KHz bandwidth
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| IIM Distortion :
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Better than -115dB ( 19+29KHz dual tone test -1KHz product @ 1Vinput ) |
| Signal to Noise : |
Better than -115dB ( 22Hz to 22KHz bandwidth ). |
| Frequency response : |
DC to 130KHz +0 / -0.1dB ( Driving 100K ohms, 120KHz driving 600 Ohms ) |
Cross talk
( Interchannel ) : |
-120dB at 1KHz, 100dB at 20KHz, -85dB at 100KHz Ref.1V RMS input |
Cross talk
( Intersource ) : |
-100dB at 1KHz, -90dB at 20KHz, -90dB at 100KHz Ref. 1V RMS input |
Gain range
Min to Max :
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-86dB to +12.0dB |
| Impedance Input : |
47K Ohm Unbalanced. 94K Ohm Balanced |
| Impedance Output : |
Less than 10 Ohms Unbalanced or Balanced |
| Mechanical Input sockets : |
2 pairs of XLR for balances line operation 5 pairs of RCA Phono for single ended operation |
| Output sockets : |
1 Pair of XLR for Balanced Line operation. 1 Pair of RCA for unbalanced operation.
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| Finish : |
Fully bead blasted, anodized aluminium alloy casework, and glass viewing lens. |
| Power on / off :
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Switch and indicator. IEC mains input socket.
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| Weight : |
15 Kg
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| Size : |
437 x 100 x 300 mm ( W x H x D ) |
