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Single Ended Triodes (SETs), the ultimate tube lovers dream.

RE: Type 50 Monos




Thanks

These amps started as 45s. Because my speakers are not quite efficient enough to really let he magic out, I found some 50s to play with. I was starting up a foods plant and had some over time money in my pocket at the time...they were a bit pricey...

All of the power iron is Hammond while the audio transformers are all Lundahl. Kevin at K&K had a couple of rev A LL1692a Interstage trannys that he let me have cheaper because they had a weird pin out.The output iron is a couple of LL1663 gaped for 50 mA. One mono is AC heated and one is DC heated. I did this so I could compare the sound while I tweeked the DC supply...worked well.I'm running the 50s gently at around 50mA and 380 VDC on the plates. I'm driving the ITs with a single 5842/417a..amazing little tube. The 50s really have a special sound..glorious mids, good thump and sweet high end.I have used these puppies as a reference for my other projects. (other amps in the picture)...

Stuben


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