Thanks Norman swapped out whatever Lukasz supplied for a Sylvannia kindly donated to me. Haven't pulled out the ECC40's but take it they are Mullards?
Where did you get the Tungsram valves? Are there various Tungsram styles or is whatever one I find squat construction
Are these the ones? http://www.ebay.ie/itm/Tungsram-ECC4...-/390690968369