2. amps-preamps
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SET pre-amplification?

I recently took an old 6b4g SET amp and converted it into a preamp. WOW!...I never have been so close! I get 90% of that SET sound but with the benefit of a higher power tube or SS amp at the end of the chain. I am still playing with this and I have found the only draw back is hum. It is 60 Htz which is normal heater hum so possibly the filaments should be DC heated not AC. Just sharing so you to can experiment. Good luck!
jayb77
dekay's avatar
dekay
5,704 posts
 
What tube preamplifiers are not single ended triode (SET) designs?
jayb77 OP
46 posts
 
Not all preamps are single ended and even the ones that are dont use 2a3 or 300B,s for the signal. Well I am sure that this already exist however I couldnt afford it so thus this Idea.
dekay's avatar
dekay
5,704 posts
 
OK, I was under the impression that most were (based upon a certain manufacturer using this as a major selling point, when is was NOT per many... posting to the contrary).

Seen posts of people using (SET) headphone amps as preamps, but I only remember an early Musical Fidelity model off the top of my head, used in this nature.

Old production 6b4g's are no longer inexpensive, but I'm certain you are already aware of this.

jayb77 OP
46 posts
 
Yes! That was my reasoning behind my 6b4g amp. All the glory of a 2a3 but a 3rd of the price. Or less. But I dont have to give up quality. I am quite surprised by the performance of my old SET amp and the tubes have a good long life.
jayb77 OP
46 posts
 
And yea manufacturers love to baffle with BS instead of Wow with wisdom. its just marketing given its bad marketing. I try to learn as much as I can before a purchase. Ive learned you need to KNOW not think you know in this hobby or you will be taken advantage of quickly and you will be broke with a bad sounding rig and that my friend is a travesty.
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