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Tube Amp Doctor - ECC803S Premium - Preamplifier Tube

Save $10.00
Original price $89.00
Current price $79.00

Tremendous richness and overtones, great details, ideal choice for Hi-Fi

A long-plate ECC83 / 12AX7A in the tradition of the famous Telefunken ECC803S. 1dB less gain than the RT003 (ECC83-Cz) but very detailed and defined, close to the RT001 (12AX7A), Its strong cathode current makes it an ideal choice for the audio driver stage as well as for HiFi applications.

 

Q: When does a preamp tube become a Premium Selected tube?

A: All preamp tubes labeled Premium Selected have passed the following tests:

  • Low Noise Test
  • Microphonic Test
  • Gain Test
  • Sonic Tests
  • Shock Tests
  • Listening Tests
  • Balanced Output Test

Matching and Selecting Options for Preamp Tubes

Matching in Pairs for preamp tubes means that two tubes show identical gain, hence, four characteristically identical systems. This matching method includes our Balance-Selection. We highly recommend this matching method for hi-fi systems.

TAD Premium Selected/Highgrade tubes are guaranteed for a period of 6 months (according to terms of warranties) for the quality criteria mentioned above.

RohS Compliant

 

Specifications

Electrical

Heater

  • Voltage (AC or DC) - 12.6V +/- 1.0 (Series), 6.3 +/- 0.5 (Parallel)
  • Current - 0.15(Series), 0.3 (Parallel)

Heating - Indirect

Cathode-to-heater potential, max - 150V

Direct interelectrode capacitances, max***

  • Grid to plate - 2.0pF
  • Grid to cathode - 2.1pF
  • Grid to heater - 1.2pF
  • Plate to cathode - 1.0pF

Mechanical

  • Operating position - Any
  • Base - E9-1, small button 9-pin
  • Dimensions - 57mm(height), 50mm(seated height), 22.2mm(diameter)
  • Cooling - Conventional
  • Approximate net weight - 15g

AF Power Amplifier

Maximum Ratings

  • DC plate voltage - 330V
  • Positive DC grid voltage - 0V
  • Negative DC grid voltage - -55V
  • DC cathode current - 8mA
  • Plate dissipation - 1.2W
  • Bulb temperature (surface hottest point) - 160 degrees celcius

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