TRUMPET REFERENCE Vacuum Tube Phonostage
4
Operation
The Trumpet Reference installs between your turntable and linestage. Be sure to
connect the ground lead to the grounding lug near the inputs. Connect the power
cord to an AC source. Turn on using the power switch on the back panel. Press the
POWER button on the front. Immediately the heaters will turn on and after a 32
second delay the high voltage supplies will activate.
Controls
Control
Description
POWER
This button toggles power on and off. The left LED indicates
heater voltage for the tubes; the right LED indicates high
voltage.
EQ
There are four settings defined by turnover and cut, arranged
left to right:
400Hz / 11dB (AES, early ffrr)
500Hz / 11dB (Decca, EMI, late ffrr)
500Hz / 13.7dB (RIAA)
500Hz / 16dB (Columbia, NAB)
STEREO
Left LED is mono.
INPUT
Left LED is MM.
POLARITY
Left LED is inverted (MC).
GAIN
There are two gain settings (MC):
64dB (>0.25mV cart)
70dB (<0.25mV cart)
LOADING
There are eight loading settings (MC), arranged left to right:
1k
322
181
131
91
76
64
57
Summary of Contents for TRUMPET REFERENCE
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