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VAC STANDARD PREAMPLIFIER SPECIFICATIONS (typical)
Type:
Vacuum tube line stage with external power supply and home
theater (direct power amplifier) mode.
Options:
Remote control for volume & mute
Dedicated MM phono input
Dedicated MC phono input
Line stage preamplifier
:
Gain:
24 dB
Maximum input signal:
Essentially infinite (attenuation precedes line stage)
Main output:
Inverting (you may reverse speaker connections if you wish to
compensate, or set your d/a converter to phase reversal)
Tape output:
Unity gain from selector, non-inverting
Phono stage preamplifier
:
Gain:
37 dB (measured at tape output)
Residual noise:
3 mV at output (S/N ratio approx. 69 dB)
Overload:
117 mV @ 1 kHz = 8 volts RMS output
460 mV @ 10 kHz
Frequency response:
RIAA +/- .25 dB
Notes:
Does not invert absolute phase.
Tube compliment
:
Phono option:
2 x 12AX7 low noise (early units); 3 x 12AX7 low noise (later units)
(The phono stage is located on circuit board at left side of chassis)
Line stage:
2 x 12AU7/6189A & 2 x 12AX7 (line stage)
Warranty:
Three years parts and labor, excluding tubes.
