Conrad-Johnson Premier 17LS Tube Preamp - Original Remote Included

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Here was have an early 2000's tube line stage preamp from Conrad-Johnson.  Beautifully built utilizing solid aluminum for the chassis, along with some of the best components available.  

In near perfect condition with no noticeable scratches or signs of use. 

Contains a stepped relay controlled volume control utilizing Vishay laser trimmed resistors for attenuation - serious stuff.  

Four-tube triode design with floating PC boards and separate power supplies for the volume and the analog section. 

We went through this beauty in our lab where it received a fresh set of tubes and a clean bill of health. 

Click here for a PDF copy of the Conrad-Johnson Premier 17LS 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.

Specifications:
Gain:
26 dB

Maximum Output:
15V

Bandpass:
2Hz to more than 100kHz

Hum and noise:
100 dB below 2.5V output

Distortion at 1.0 v output:
less than .25% THD or IMD Phase: inverts phase of all inputs at main out

Output impedance:
less than 850 ohms

Mechanical:
Dimensions: 15.25"D x 19"W x 3.315"H
Net Weight: 21 lbs total

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