Conrad Johnson Premier 11a one year factory warranty.

Conrad Johnson Premier 11a We purchased this mint Premier 11a directly from Conrad Johnson 5/20 and it is currently at the Conrad Johnson factory in VA. IOt will ship directly to you from there upon purchase. The tubes are virtually new with only 100 hours or so. One year factory warranty.

Premier Eleven Vacuum Tube Amplifier
Essentially a scaled down, stereo version of the Premier Eight, the Premier Eleven delivered 70 watts per channel from a single pair of 6550 output tubes.
The Premier Eleven 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.

The Eleven-A added a noise filter on the bias indicator circuit, first employed in the Premier Twelve. The Eleven-XS is an Eleven-A with the output stage configured to use a pair of EL34s operated as triodes.

Features:
5-way binding post speaker connectors
one pair of inputs
two plate fuses
power switch


Replacement Tube Sets: RTPR11 or RTPR11XS

V1 & V2: 5751 | V3 & V4: 6FQ7/6CG7 | V5-V8: 6550

Premier Eleven, Eleven-A: V5-V8:
You could use kt120 tubes also without any modificaton but the cage will not fit because of the taller tube size. (I always thought they looked much better without the cages on anyway)


Specifications:
Power Output ­ Ultralinear Operation: 70 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: 30 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.
Frequency Response: 20Hz to 20 kHz, +0, -.1 dB
Input Sensitivity: 0.9 volts to rated power
Hum & Noise: 96 dB below rated power
Mechanical:
Dimensions: 17.5W | 7.25H | 15D inches
Weight: 48 lbs.