2. amps-preamps
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tube vs SS my own little test

So last weekend I went to a audio show at my local dealer. But alas the dealer was sick so. I a distributor filled in for him. I have know for a few years.

So we started chatting. Last few years I have been changing/upgrading my set little by little. Different speakers, turntable, phono amp. However my integrated amp stayed. My amp is a Symphonic Line La musica. So out of curiosity I asked him what do you think. I my amp still up to it.

To which he answered, I don't know. Why don't you borrow an amp from the shop and find out. So I went home with an Octave V110 and an Octave Super Black Box.

So how do they compare? Well the difference is different from what I expected. I have never owned a tube amp, or any tube gear for that matter. The Octave is a push pull pentode tube amp. This particular V110 comes with KT150 tubes instead of the KT120 tubes which the V110 normally has. Since I know nothing of tube I have no clue what that means to the sound.

Back to the sound. First I was disappointed a bit. It didn't sound that good. a Bit lack luster. And no "magical" tube mids that I have read about. The SL was more punchy, better controlled bass, and the mids and high were not that different.

However that changed after some time. Me knowing nothing of tubes didn't know that it can take up to an hour for the tube to completely warm up or something. because after about 30 minutes the amp sounds a lot better and after an hour even better still.

The SL was still a bit more dynamic and maybe still had a little more bass power. But after an hour the Octace mids and highs are clearly superior. Not that the SL is bad by any standard. But the Octave sounds more organic for lack of better wording.

But how practical is an amp that needs close to an hour to warm up? How typical is that of tube amps? Since to me I think it would be a deal breaker. I do not always have the time sometimes I just have 20 minutes.

Do hybrid integrated amps tube pre/SS power suffer from the same "shortcoming"?

Coming days I'll listen some more and see if I can find more differences.
mordante

Showing 2 responses by minorl

minorl
1,021 posts
 
I have found that my tube and solid state amps and pre-amps need about 30 minutes to sound their best. (to me).

I turn the system on when I know I'm going to listen and go do something else for awhile.

Also, my preference is a tube pre-amp over a solid state pre-amp and a tube or solid state amp. However, this totally depends on the equipment auditioned.

If one was given the top 5 pre-amps (5 solid state and 5 tube) and top 5 power amps (5 solid state and 5 tube) in a particular price point range that could correctly power your specific pair of speakers, I would bet that you would be a very happy camper and you would have no problem going back and forth between equipment, regardless of whether it was tube or solid state.

But, back to the point, warming up equipment is really necessary to perform their best. Anyone telling you otherwise is trying to sell you something.

Don't let the oil get to temperature and flow correctly in your car and you will find that you will need mechanical work sooner than if you did let it warm up.

My system sounds cold (I know, not a great description), when not warmed up. But, when it warms up, it really opens up. Solid state and tube. no difference.

enjoy
minorl
1,021 posts
 
I don't believe in leaving any electrical equipment turned on. Its the perfect scenario where you come home and your house is burned to the ground. Except for my refrigerator, everything else better be off.

I have tube and solid state equipment and no way on this planet am I leaving my tubed equipment on anyway.

AR doesn't recommend that and with the tubes fully powered, the life of the tubes diminishes when the power is on. So many hours of life per tube. Makes no sense to me to leave tube equipment on when I'm either not home or not using it. Unless there is some standby circuit that doesn't impact the life of the tubes.

My amps get really warm so that isn't happening.

So, if I have to turn the tube equipment off anyway, I might as well turn everything off.

But, as I mentioned earlier, I would turn the equipment off anyway.

To each their own. I just feel better and safer with the equipment off when not in use.

enjoy
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