Conrad-Johnson Owner’s Manual:
Evolution 20 Vacuum-Tube Preamplifier
conrad-johnson
It just sounds right
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Page 1: ...Conrad Johnson Owner s Manual Evolution 20 Vacuum Tube Preamplifier conrad johnson It just sounds right...
Page 2: ...establish the reference standard among pream plifiers for reproducing the dynamics tonalities textures and ambience of a live musical performance The design and materials have been carefully selected...
Page 3: ...ign Replacement cartons are available from the factory for a nominal charge d Normal wear and maintenance are not covered by this warranty 3 The above warranty may be transferred to subsequent owners...
Page 4: ...register the warranty The warranty may be transferred to a new owner if it has been properly registered initially and if the registered owner sends a signed notice providing the name and address of th...
Page 5: ...lization required by moving magnet and most moving coil cartridges The phono input impedance can be selected by a back panel switch The options are 70 100 150 250 470 1k 2k 5k 10k and 47k ohms Most mo...
Page 6: ...this USE OF EXTERNAL TONE CONTROLS OR OTHER EXTERNAL SIGNAL PROCESSING DEVICES Use Tape 1 and Record 1 for your tape recorder Connect the output of the tone controls to Tape 2 and the input of the ton...
Page 7: ...used to choose an input for listening RECORD SELECTOR PHONO TUNER CD TAPE 1 TAPE 2 This control selects the signal to the record outputs allowing the user to record one source while listening to anot...
Page 8: ...of no vacuum tubes available which will improve the sonic performance of your Evolution 20 In addition the tubes in your preamplifier have been tempered by a controlled burn in procedure that permits...
Page 9: ...EVOLUTION 20 TUBE COMPLEMENT V1 and V2 type 6CW4 V3 V10 type 6GK5 V3 V1 V2 V4 V8 V7 V5 V6 V10 V9 EVOLUTION 20 OWNER S MANUAL 8...
Page 10: ...al transients by first moving out they are creating a rise in pressure and the system is said to be phase correct If they respond by moving in they create a fall in pressure and the system is said to...
Page 11: ...em to the point where it becomes no better than average To complicate matters our experience suggests that the choice of interconnects will be system dependent those that are ranked first on a given s...
Page 12: ...20Hz 20KHz 80dB below 10mv input Line Level Section Gain 29dB Maximum Output 20V Bandpass 2Hz to more than 100kHz Hum and noise 88dB below 2 5V output Distortion at 1 0 v output less than 25 THD or IM...
Page 13: ...esign inc 2733 Merrilee Drive Fairfax VA 22031 Be sure to include a copy of your sales receipt from the original pur chase along with a note explaining the problem you are having in as much detail as...
