Even though the DHTs are some of the most linear amplifiers, perhaps the illusion of dynamic expansion (aside from issues of harmonics and harmonic distortions) can be unevenly applied over the frequency range, and could be considered a coloration.
Thorium cathode DHT's used in transmitting tubes can have very high anode dissipations up to hundreds of watts.
However, yes, the 'traditional' DHT tubes are telephony/audio tubes of lower power ratings from a fraction of a watt output to 10 watts or so, and can be used as drivers or amplification tubes (SET).
The problem is the output transformer- the bigger you build it the less bandwidth you get. 7 watts is often the practical upper limit where you can get 20Hz to 20KHz reliably. But to really reproduce audio correctly (in other words avoid phase shift) you need to go from 2Hz to 200KHz (which is something our amps can do). Phase shift will go to 10x the low end cutoff and a 10th of the high frequency cutoff. So if you can only make it to 20Hz before the amp rolls off, you'll have phase shift up to 200Hz. Over that range you'll hear less impact, as that is how the ear translates the phase shift over a spectrum like that.Do these DHT's tend to be lower powered in general?
The problem is the output transformer- the bigger you build it the less bandwidth you get. 7 watts is often the practical upper limit where you can get 20Hz to 20KHz reliably. But to really reproduce audio correctly (in other words avoid phase shift) you need to go from 2Hz to 200KHz (which is something our amps can do). Phase shift will go to 10x the low end cutoff and a 10th of the high frequency cutoff. So if you can only make it to 20Hz before the amp rolls off, you'll have phase shift up to 200Hz. Over that range you'll hear less impact, as that is how the ear translates the phase shift over a spectrum like that.
No- I think the closest dealer is in Paris.Does anyone sell your amps in the UK
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