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Conrad-Johnson Premier 12
SOLD $7,000.00
MAR
2010
Stereophile Review
Manufacturer's Website

The Premier Twelve is a mono-block tube
power amplifier, in effect a smaller, lower powered version of the
Premier Eight. It uses two pair of 6550s to produce 140 watts. It is
similar in size and circuit to the stereo Premier Eleven. The Twelve-XS
is a Twelve with the output stage configured to use a pair of EL34s
operated as triodes to produce about 60 watts.
The Premier Twelve used only the finest component parts in all stages
including the power supply. The power supply used only polypropylene and
"cjd" polystyrene capacitors as opposed to the traditional deployment of
electrolytics. The main storage reservoir used polypropylene capacitors
with polystyrene shunts.
Features:
5-way binding post speaker connectors,
one input, supply fuses, power switch

V1: 5751
V2 & V3: 6FQ7/6CG7
V4 V7 6550 Premier Twelve
V4 V7 EL34 Premier Twelve-XS
Replacement Tube Sets: RTPR12 or RTPR12XS
Specifications:
Power Output: Ultralinear Operation: 140 watts per channel RMS at 4,
8, or16 ohms both channels driven from 30Hz to 15kHz with no more than
1% THD or IMD.
Power Output: Triode Operation: 60 watts per channel RMS at 4, 8, or16
ohms both channels driven from 30Hz to 15kHz with no more than 1.5% THD
or IMD.
Input Sensitivity: 0.90 volts to full power
Hum & Noise: 98dB below full power
Input Impedance: 100K ohms
Mechanical: chassis 17 W" x 7 H" x 15 D"
Weight: 51 lbs.
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