Audio Tube Amps

2A3 Tube Amp

2A3 Tube amp "a tribute to simplicity"

I do not know why but I prefer simple, low power triode designs. May be it's the warm sound produced by these tubes or because I like horn speakers and I know that this relation is erotic. It's a kind of magic, a sweet sound triggers up your feelings, that can reproduced only from a combination of a DHT tube amp and a pair of horn speakers.
So last year I decided to construct a low power SET based on 2A3 tube. I had no previous experience on this specific tube, and this is something that excites me.

2A3 Tube Amp

811A single ended triode power amp

SET direct heated triode tube power amp

Direct heated triode power output tubes are really interesting. Since September 2008 I've been working in a new project regarding a single ended triode tube power amp using the 811A vacuum tube. Actually it is a project with a long process of experimentation.

The 811A vacuum tube it is a power triode capable to output 10 - 15 Watts in a single ended class A2 configuration, in a three stages circuit using interstage transformer in the driving stage.

SV811-3 tube Amp

SET EL84 tube amp DIY project

A Decware EL84 Zen Amp clone

Making a low power single ended amplifier has always been in my designing plans. Obviously such a construction requires the appropriate speakers, particularly horn type designs, so that the output of the amp can reach an efficiency satisfying level.
Once at a certain point, I came across the designs of the Decware SE EL84 Zen amp, which had quite good reviews among the tube amps DIY and Single Ended tube amp builders.

se el84 tube amp