[pjnad]

Does anyone have a pair of 1950's vintage 5687 tubes to sell? These would be used in a Modwright pre.
Thanks,
Paul

[Thirsty]

I just ordered a pair of Pearl Cryo Tung-Sol 5687WA that Parts Connection has on sale for $30, seems like a good price for a nos 1950,s cryo tube.

[pjnad]

Thanks for the info...does seem like a good deal and the Cryo Tubes get good reviews. My only concern is that these are standard grade and could be a bit noisy as per the Cryo pdf page. I am going to call tomorrow and speak to someone at Parts Connexion.
Regards,
Paul

[Thirsty]

I was also concerned about the standard grade so I emailed Chris at Parts Connection and told him they would be used as driver tubes for my 845 mono blocks, he replied not to worry as Pearl did the most thorough testing in the industry.