Elrog 300B vs Takatsuki 300B tubes

Hi Rob,
You can use ER300B in the AN Kit-1 without problems...
Because it's a kit I think You should have minimum skills at soldering and assambling. Thats why i suggest to add an additional resistor of 100Ohms(min 2W) between the paralled 1.5k Kathode resistors and the heater pin, so You get 850Ohms cathode resistor at all...resulting more gentle operating conditions.

Best regards, Matthias

Hi Robert (Rwanda),
I could not find schematics of the Cary 300 SEI...But the description says 15W(!!!) watt per chanel (out of ONE 300B!).
May be, they use class A2 conditions (driving the tubes to positive grid voltage) or they use the absolute maximum operating conditions (450V/80mA) to get this 15W...
If this amps have a bias control and You can regulate the bias to 70-80mA, ER300B could be used successful. But I can not suggest this at the moment.

Best regards, Matthias

MK,
Thank you so much for your input. You are a positive influence on the Agon, please keep coming back with your valuable input. We all welcome your knowledgable suggestions. We also all need to encourage folks like yourself and Elrog as a company to seek higher levels of advancement in audio. It is great that a modern tube can best NOS. all the best. Rob

Mk,
How about Wyetech Sapphire monoblocks?
18wpc parallel 300B SET self-biasing conservatively run.
Will your tubes work here? Would love to try 'em!

Hi Fla,
I have read the article in 6moons and the description on the manufacturer's site. Very nice amp with a lot of effort in details (huge capacitors in HV supply, dedicated heater supplies for each output tube, smart solution for changing the gain, switchable output impedances from 2 to 16ohms).
Very gentle operating conditions...30W dissipation per output tube only...So "Globe Mesh Type" 300B can be used. This tubes don't like stress also. This amp was build for ER300B ;-)
For best results You should order a matched Quad.

Best regards, Matthias