Hello,
I have a lot of NOS gu-29 tubes with sockets. I want to make a simple headphone amplifier. Just a quick project for fun. I have seen some chinese stuff with a ONE tube for both channels. I will drive the amplifier with the output of my preamplifier QUAD-33
Any schematics for a simple project? Need to be small, thats the reason for one tube. I want to use real HV not the chinese 12-24 versions on anodes.
Any help please would be great!!
Thanks
George
I have a lot of NOS gu-29 tubes with sockets. I want to make a simple headphone amplifier. Just a quick project for fun. I have seen some chinese stuff with a ONE tube for both channels. I will drive the amplifier with the output of my preamplifier QUAD-33
Any schematics for a simple project? Need to be small, thats the reason for one tube. I want to use real HV not the chinese 12-24 versions on anodes.
Any help please would be great!!
Thanks
George
Neith of these is a gu-29 but we're closeish... I have one of these mid build that I can send the schematic for that may suit? I've collected the parts for this however thats not a headphone amplifier either. I do have plans to also build this though which answers the problem of impedance. I mention the latter as getting or improvising an output transformer is easier with a push pull setup!
200V plate and screen, couple-K load, makes a couple Watts.
That's way more than headphones need. So you could probably go 100V for about a third of a Watt.
I have no idea where to find 2.5k:55r sub-Watt transformers.
Note that the heater requirement of 12 Watts seems absurd for a part-Watt amplifier.
That's way more than headphones need. So you could probably go 100V for about a third of a Watt.
I have no idea where to find 2.5k:55r sub-Watt transformers.
Note that the heater requirement of 12 Watts seems absurd for a part-Watt amplifier.
200V plate and screen, couple-K load, makes a couple Watts.
That's way more than headphones need. So you could probably go 100V for about a third of a Watt.
I have no idea where to find 2.5k:55r sub-Watt transformers.
Note that the heater requirement of 12 Watts seems absurd for a part-Watt amplifier.
i will ask a friend here with a transformer shop if he can wound one output transformer
yes the heaters are little overkill for that amplifier, but its a project for fun
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