duncan1
500+ Head-Fier
- Joined
- Mar 3, 2012
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Yes Dave. exactly right.also for the adjustment when hot .Solid -state audio equipment i should be left on 24/7 and give it 3 days at least to judge it . If it is kept being switched off/on then you will never hear the best fidelity.Valves[tube] isnt the same doesnt need as long to judge it .valve equipment heats up a lot quicker and the actual amplification is usually all valve so other parts dont need to heat up. I am talking a pure valve set up not a hybrid valve/so;id-state.Once f valves are "run in"for the first time of use the fidelity doesnt change much on switch-on only thing to watch is the bias adjustment/unequal gain which will increase distortion and every piece of valve amps are heavily dependent on the quality of the out-put transformer although in energisers they wouldnt normally be used.Reproduction should be a lot clearer and open [smaller detail heard] but that depends on not only the other mods but the quality of your other equipment.My own-build buffer is 2 individual amps with their own ott PS and an very low distortion audio chip in each /plugged into gold-plated contact sockets so chips can be changed to suite. JLH proved to his own satisfaction that at low signal voltages it was near impossible to tell the difference between them and a discrete circuit.Star earthing polyprop caps used as bypass for electrolytic caps-105 deg high quality double voltage regulators[2 stage drop in voltage] this gives me a neutral output although if some like it warm then just change the chips to suite.I should add if you are not changing the caps in the PS then at least change them [as I have done in the channel cards to 100uf-10uf as fitted is not good enough and change bypass caps to 0.1uf polyprop /soldered to the back to give room to fit the larger capacitors[side-ways] The other 2 small /very low value caps I changed to polystyrene.Duncan