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Old 11th July 2006, 10:56 PM   #1
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Default Replacing ECC83 in Leak Stereo50 with ECC808


Is it safe enough if I replace ECC83 on Leak Stereo50 with ECC808...?

I heard ECC808 has lower maximum anode dissipation...

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Old 11th July 2006, 11:49 PM   #2
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Look at the data sheet. The 340 mA. heater draw of the ECC808 is a matter of concern.

Does the Stereo 50 share a 'X7 between the 2 channels? If not, why get your bowels in an uproar? The Sovtek 12AX7LPS is a FINE tube available at modest cost.
Eli D.
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Old 12th July 2006, 04:37 AM   #3
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They are being shared.
I will look up the specs for heater windings on transformer used in Stereo50, but other than heater issue, can ECC808 take over the place of ECC83 in Stereo70...? (considering max cathode current and overall plate dissipation rating being half of 12AX7)

Why should I buy Russian tubes while I have a bunch of Telefunken ECC808....?
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Old 12th July 2006, 06:22 AM   #4
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ECC808 is supposed to be lower noise but has a different pin-out : you'll have to rewire the socket.
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Old 12th July 2006, 07:27 AM   #5
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Look at the new JJ ECC803S for direct replacement.
Ita a premium performance 12AX7/ECC83.

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