Conrad-Johnson PV11 Tube Preamp with Phono Input

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Wonderful almost vintage tube preamp from CJ with a built-in phono stage. 

Please check out our photos to see where we added NOS (New Old Stock) Philips JAN type tubes to the line stage.

From a Stereophile review written by Robert Deutsch:

"It should be obvious to anyone who hasn't skipped the body of this review (If you have, go back and read all of it RIGHT NOW!) that I was extremely impressed with the Conrad-Johnson PV11. If the term "musicality" has any meaning in the context of reproduction rather than production of music, then surely the PV11 can be said to embody this characteristic. That is, with the PV11 in the system, I found it easier to sustain the illusion that I was listening not to the product of a complex electromechanical encoding/storage/playback technology, but to music, played and sung by people."

Click here for a PDF copy of the Conrad-Johnson Premier 11 (PV11) Owner's Manual

Our Testing Process for Preamplifiers at SkyFi:

We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage. Special attention is paid to the power supply which is the most common source of failure for preamps. We then power up the unit and run a simple 1k sine wave while monitoring the low voltage output on an oscilloscope for signs of distortion or noise to get a baseline.

At this point we will lubricate and clean all switches and potentiometers (that are not sealed) with a high quality contact cleaner, and then re-test all functions for any signs of noise or scratching.

Final testing involves putting actual music through the preamplifier We have learned over time that some issues are only noticeable to a trained ear while listening to a familiar source material. Our test bench has reference vintage Kef speakers that we are super familiar with which will quickly reveal any discrepancies. Some preamps will then move into the listening room where they will be tested with our in-house reference system.

PV11 SPECIFICATIONS

Gain:
Phono stage 47dB * High level 18 dB

Output:
Maximum 20V

Phase:
Line stage inverts phase of all inputs.

Phono overload:
In excess of 200 mv at 1KHz

Response:
Bandpass 2Hz to more than 100 KHz
RIAA equalization to +/- .25dB (20Hz-20KHz)

Hum and noise(20Hz-20KHz):
Phono: 78 dB below 10mv input
Line level: 92 dB below 2.5V output

Distortion:
THD less than .25% IMD less than .25%

Ouput impedance:
lLess than 500 ohms

Dimensions:
19"W x 3.5"H x 12.5"D

Weight:
13lbs.

FUSE:
The AC line is fused to protect the PV11’s transformer. This fuse will not fail in normal operation. Failure of the fuse is a symptom of a more serious problem, indicating the need for qualified service. IN NO EVENT SHOULD THE FUSE BE REPLACED WITH A FUSE OF DIFFERENT TYPE OR RATING THAN THAT SUPPLIED BY THE FACTORY. The PV11 uses a 3/4 amp 3AG slo-blow fuse (1/2 amp 3AG slo-blow for 220V operation).

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.