#1
So i`ve read the FAQ`s, and I know what valves are and what they do. But I`m having a hard time telling the difference, I look at some sites and some guitar amp head advertise their tubes, but others dont.

So I wanted to know, are all amp heads valve, and are all SS just circuits? Or can both be either, if so, how do you tell?
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#2
It's not like all heads are one way or another. A head is usualy the exact same thing as the combo amp without the speakers. So if you know the combo is tube, than the head is tube too.
#3
So both can be either, and the only way to tell is to ask/look for specs?
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#4
well, unless there are ports so that you can actually see the valves (or tubes.. same thing)
you can't really tell simply by looking at it. you'll have to open a panel and check for yourself.

Full tube amps will have a number of preamp tubes and power tubes, Solid states will have .. i can't remember if its transistors or diodes.. but there won't be any tubes in it.

there are also hybrid amps which have both solid state and tube components. however these hybrids sound and act more as solid state amps rather than tube amps.
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#6
Ah I see, thanks for the imput.
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#7
Quote by stephen_rettie
a tube amp should have a standby switch as well

Actually quite alot dont. Just ask or look up specs is your best bet.
#8
When they advertise them a lot of solid state (no tubes) and hybrid (one tube, still sounds like solid state) manufacturers post confusing ads (on purpose.) Most tube amps will list the kinds of tubes under "specifications" or "features." If it doesn't specifically state that its an all tube amp chances are its not. If you find an amp you like and have any questions ask UG. They'll be glad to answer you (some even without the wise-ass comments.)
#9
^ yep, agreed.

it's a tube amp if:

- it has a standby switch (not all do, and actually, now i think of it, that hybrid randall may have a standby switch, so i guess it's not foolproof).

- it lists the tubes, and has several 12ax7's/ecc83's in the preamp, and one or more power amp tubes- generally either 6L6, EL34, EL84 or 6V6 (there are others, though these are the most usual ones).
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#10
Look at the back and if you can see the valves its a valve amp. Most valve amps have standby switch as said. A very crude way but tube amps generally weigh much more than similarly sized SS amps.
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#11
if you are buying at a store, you can see the tubes most of the time. if online look at the amps on guitarcenter.com, you can specify which kind you want, like tube heads only...
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#12
Look in the back. If it has at least one little valve (possibly under a cover) and one big valve (also possibly under a cover) , it's a valve amp. Big transformers tend to give things away a bit too. Also compare weight - valve amps weigh lots.
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#13
If you buy from a store then ask and try the amp out to see if it is what you need.
#14
Quote by Dave_Mc
^ yep, agreed.

it's a tube amp if:

- it has a standby switch (not all do, and actually, now i think of it, that hybrid randall may have a standby switch, so i guess it's not foolproof).

- it lists the tubes, and has several 12ax7's/ecc83's in the preamp, and one or more power amp tubes- generally either 6L6, EL34, EL84 or 6V6 (there are others, though these are the most usual ones).

But the best power amp tubes at KT77s!
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#16
KT88's from my thunderverb. 50 watts per tube.
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#19
EL84s Another way you can tell is tube amps take about a minute to warm up before you start getting full sound, and you will have sound in one generally about 7 seconds after you turn it off.
#20
Quote by Dave_Mc
- it lists the tubes, and has several 12ax7's/ecc83's in the preamp, and one or more power amp tubes- generally either 6L6, EL34, EL84 or 6V6 (there are others, though these are the most usual ones).

+1. Generally a tube amp has 4+ preamp tubes and 2 power amp tubes for every 50 watts of power.
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#21
Quote by xifr
+1. Generally a tube amp has 4+ preamp tubes and 2 power amp tubes for every 50 watts of power.


Hmmmm, disagree with you there. The type of tube determines the wattage somewhat.

It takes 4 EL84's to get at least 30 watts, 2 EL34's for 50 watts, 2 6V6's for 22 watts, and 2 6L6's for 40 watts. Not to mention you have amps aimed at lighter gain applications like the traynors, Hot rod Devilles and so on that have less than 4 preamp tubes. I only really see higher gain amps with 4+ preamp tubes used as preamps, and not as drivers.
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#22
Quote by RHCPfan01
But the best power amp tubes at KT77s!


i like most of them. i was just mentioning the more usual ones...
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Quote by K33nbl4d3
I'll have to put the Classic T models on my to-try list. Shame the finish options there are Anachronism Gold, Nuclear Waste and Aged Clown, because in principle the plaintop is right up my alley.

Quote by K33nbl4d3
Presumably because the CCF (Combined Corksniffing Forces) of MLP and Gibson forums would rise up against them, plunging the land into war.

Quote by T00DEEPBLUE
Et tu, br00tz?