Manufactured by Shuguang, these valves are an ideal replacement for DarkVoice 336SE oe 336i audio headphone amplifiers or other equipment using this valve or 6AS7 valves. New Old Stock (NOS) with an Octal base. As data for this valve can be hard to find, here is the pinout of the valve, viewed from the underside;
See our store for other listings for 6SN7, 12AX7, 12AT7, 12AU7, 12AX7B and for "old school" construction genuine 7025 preamplifier valves as well as matched pairs of 6V6, 6L6 and EL34.
Sent by First Class post for fast delivery.
<Handy hint> Changing your valve Once you have the back or cover removed from the amplifier/radio/record player you are changing a valve in it's easy to change. First, the safety warnings;
Unplug the unit from the mains before removing any covers. Don't try to change the valve when the unit has been recently switched on... valves get hot enough to burn you! Try not to touch anything inside the unit except the valve you are changing as some parts can hold high voltages even when it has been switched off for some time. Now for the easy bit.... hold the valve you are changing between two fingers and your thumb and rocking it slightly to free its pins, pull it firmly straight up and it will unplug. You will see that the pins form a circle with an inner plastic/Bakelite peg with a bump on one side. Take a look at the socket to see where the cutout or keyway on the centre hole is and taking the new valve, line the centre peg / key up correctly with the keyway and again rocking it around slightly (only a few degrees) push the new valve in until it is firmly seated. Replace back cover, switch on.... all done! Preamp valves like this double triode don't need any further setting up or baising, so thats all there is to it. Changing these valves can make your sound instantly brighter and punchy, so why not spend a few pounds and bring the life back into your amplifier!
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