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Conrad Johnson

Conrad Johnson Premier Ten Pre-Amplifier


Conrad Johnson Premier Ten Pre-Amplifier 

Excellent Overall Condition With Only A Few Minor Marks And Signs Of Use 

Recently Service Checked With No Issues And A Set Of New Vintage Old Stock American Made Sylvania 6GK5 Tubes Installed 

Also Comes With A Sleeve Of Five Vintage NOS GE 6GK5 Tubes And Three Replacement BBS-1 Fuses As Well 

This Amp Has Had Two Previous Owners And Was Babied- Sounds Incredible And Ready For Another 30 Years


Premier Ten Line-Stage Vacuum Tube Pre-Amplifier

The Premier Ten was essentially two mono preamplifiers sharing a line cord and power transformer.

Specially constructed controls maintain a physical separation between channels to reduce capacitive-coupling and minimize crosstalk between channels. Individually regulated power supplies electrically isolate the two separate channels.

Derived directly from the Premier Seven, the audio circuit of the Premier Ten consists of a single triode amplifier direct coupled to a triode cathode follower. The low output impedance of the cathode follower permits the use of the Premier Ten with highly capacitive amplifier interconnect cables without attenuation of the high frequency information. The zero feedback circuit insures temporal accuracy and spatial detail.

The volume control is a 23 position switch selecting among 23 pairs of resistors ­ never more than a single-pair of resistors are inserted in the signal path by this control. The balance control is an 11 position switch that is electrically out of the circuit in the centered position. There are no carbon-track or conductive plastic resistive elements to degrade the audio signal in the Premier Ten.


  • phono/aux
  • tuner
  • CD
  • monitor and recording facilities for two tape decks with dubbing from Tape 1 to Tape 2


  • one pair amplifier (RCA main) outputs


  • selector
  • record (tape out selector)
  • mute
  • balance
  • volume
  • power

Tubes: 4 X 6GK5




  • Gain: 25 dB
  • Maximum Output is 20 VRMS
  • Distortion: less than .25% THD or IMD at 1.0 V output
  • Response: bandpass 2Hz to more than 100kHz
  • Phase: inverts phase of all inputs at main out
  • Noise: 94 dB below 2.5 volt output


  • Dimensions: 19″W | 5.25″H | 16 3/8″D inches
  • Weight: 28 lbs.