|
Conrad-Johnson Premier 8A
SOLD $15,000.00
FEB
2010
-
Mint Condition!
-
Made In U.S.A.
-
New Tubes
-
275 Watts RMS/CH
-
Collector's Item!
-
Original Box
-
Owner's Manual Included
-
Worldwide
Shipping
Manufacturer's Website

The flagship of the conrad-johnson amplifier line
for many years, the Premier Eight was a powerful 275 watts per
mono-block making it the perfect choice for speaker systems which
require tremendous power input and control. The Premier Eight used
premium quality component parts throughout. The power supplies,
including the main storage reservoir, used only polypropylene and "cjd"
polystyrene capacitors as opposed to the traditional deployment of
electrolytic capacitors.
The audio circuit consists of three stages. A triode- amplifier using
four paralleled sections of two 5751's amplifies the input signal. That
stage is direct-coupled to a cathode coupled phase inverter, each half
of which consists of four paralleled sections of two high current twin
triodes. The phase inverter circuit provides a balanced, low-impedance
drive to the final output stage four pairs of 6550's. They operate in
AB ultra-linear configuration, offering an optimal combination of
high-power, low distortion, and low output impedance.
The Premier Eight-A added a noise filter to the bias indicator circuit,
upgraded resistors and capacitors in the voltage amplifier and bias
power supplies, and improved input wiring. The Premier Eight-XS is a an
Eight-A with output stage configured to use EL34s connected for triode
operation.
All Premier Eights were supplied with a protective tube cover,
especially important for households with small children and pets.
Features:
5-way binding post speaker connectors, one pair of inputs, two plate
fuses, power switch

V1 & V2: 5751
V3-V6: 6FQ7/6CG7
V7 V18: 6550 Premier Eight and Premier Eight-A
V7 V18: EL34 Premier Eight-XS
Replacement tube set: RTPR8 or RTPR8XS
Click above for technical info on this product or to purchase a
replacement tube kit.
Specifications:
Power Output 275 watts from 30Hz to 15kHz at no more than 1% THD or
IMD into 4 ohms (also available connected for 2, 8 or 16 ohm loads).
Power Output (model XS equipped with EL34 output tubes in triode mode)
130 watts from 30Hz to 15kHz at no more than 1% THD or IMD into 4 ohms
(also available connected for 2, 8 or 16 ohm loads).
Response: 20Hz to 20kHz, +/- .1 dB
Input Impedance: 100 kOhms
Hum & Noise: 96 dB below rated power
Mechanical: 21 D" x 19W" X 9.5 H"
Weight: 90 lbs.
|