Tube Amp Comparison: Unbiased Ears Tell A Very Interesting Story

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stevieb

Just another guy, really.
Recently, I decided to sell an amp- it was going to be either my Super Champ XD, or my '95 Champ 25SE. As part of my decision-making process, I posted a thread ("Fender Super Champ XD or Champ 25SE- Which To Sell?") and played the four tube amps I have here to compare, and also decide which is coming to the gig I play tomorrow evening. Then, things got interesting...

The 4 amps are:
Fender Super Champ XD
Fender Champ 25SE
Ampeg Reverberocket 212 re-issue
1977 Fender Silverface Deluxe Reverb

Note they are listed in ascending order of cache' among guitarist tone-questers. Also in order that I was playing them. The guitar i used was my Epiphone Les Paul with Burstbucker Alneco 5's.

Got as far as the Ampeg, then had to stop for a bit. When I got back to it, Gale was home, so I asked her to listen from the other room, and pick out the amp she liked the sound of, best. I played each one on it's cleanest channel, and tried to keep EQ, reverb, etc. as close to the same output setting as I could. All amps were right next to each other, in the corner of the room. Background noise was minimal. I played the Champ 25SE first, then the SCXD, then Ampeg, then DR.

Now, Gale is no tin ear- two of her daughters have wonderful voices, one of those twins having earned a degree in vocal music from FSU- Gale was very involved in their development as vocalist, attending recitals, concerts, etc. Gale herself sings in our Uniterian Universalist choir, and our director (certainly no slouch, she a faculty member at The Kennesaw State U's department of music) recently asked Gale to move to soprano, because of Gale's voice, ability to sing strong yet blend, and Gale's "ear ability." The one "qualification" Gale lacks is any biased opinion on guitar amp tone- she has never played electric guitar, later would admit she did not know anything of the reputations of the 4 amps, and was in the other room- a true blind (thought not double-blind) test.

But here's the thing: She liked the tone of the Champ SE the best. The Ampeg ran a close second, the DR a distant third, and the SCXD dead last. Her ranking the SCXD last was no big surprise- it having the only 10-inch speaker of the bunch (although it is an upgraded Eminence Ragin Cajun,) but I was quite surprised the DR was so far back in the pack. She said the SE sounded the cleanest- and darned if she isn't right.

To be sure, there are some factors that may be skewing the results: The DR's vintage JBL speaker could probably do with some work, as could the amp- I have not had either serviced in the three years I have owned it, and I suspect the previous owner hadn't for several years, either. The tubes did check out "good" about 3 years ago, and there is not excess cap-driven noise, but I imagine the amp could use a good going-over. The Ampeg has it's original Ampeg-stickered speakers, and recently came out of the shop where it received a going-over because it stopped working- not expressly to optimize it's tone, but the tech said he looked over everything he could to make sure there were no gremlins lurking. The SE has a replacement Jensen "Special Design" speaker in it, which could have made something of a difference, but I wouldn't think that much of one.

But isn't that interesting? I hope to repeat the experiment, with the same speaker driven by all 4 amps, but for now, I am awed. Who'd thunk it?
 
its interesting, and the speaker test will be telling for you.
no doubt speakers make a huge impact.

I wonder if you put the speaker on the 'least favorite" amp, how much it will improve?

I recently posted a great sounding ss, but when jamming live it didn't hold up well, as in compared to a Hot Rod Deville. At low volumes for recording no problem, as the volume went up the ss kind of fell apart sonically.

what db are you testing out at? Your DR might shine a little more once your volumes up...another test= decibels?
 
I agree with CoolCat. Speakers make a huge difference and in some cases just changing the speaker in the amp will do the trick for you.

On the Deluxe Reverb, changing out the speaker and tubes (be sure to have it re-biased) would be my first move and if that doesn't please your ears then have someone who knows what they are doing convert the DR to Blackface specs which will certainly bring out the tone in it.
 
I'm not bagging on your test, but IMO asking a vocalist about guitar tone is like asking a Wine Drinker's opinion on Beer.
 
A guitar tone by itself isn't always the way to pick the obvious "best" choice...it has to be taken in context.

Here's another thought...
If amps had just ONE sound and that's it, then OK, you might be able to line 'em up and pick the one you like best, but most have multiple tones. I mean, sometimes just a slight nudge of their volume and/or the tone knobs...and they can gone from "blah" to perfect.

I just wouldn’t use that “test” as some defining way to pick your “best” amp out of the bunch! :)
 
Rather than just naming names, why not do a shootout for us to judge? Upload some samples.

When I was responding, I was assuming all amps were stock. Yes, tubes and speakers can totally change an amps tone dramatically. Even a cheap chinese amp can sound great with some mods. I brought my Johnson 25 watt modded amp to a show. I A/B'd it with an orange and both engineers chose the Johnson's tone over the Orange.
 
I'm not bagging on your test, but IMO asking a vocalist about guitar tone is like asking a Wine Drinker's opinion on Beer.

Agreed. It's also incredibly subjective. My mom, who DOES have a tin ear, would prefer that Champ XD hands down over my Mesa Roadster simply because the Champ will almost certainly not produce the sort of saturation that the Mesa does, and she likes clean sounds and wish I'd play more clean guitar. Mothers.... You know how they are. :D
 
I usually let my cat decide if the tone is good or not. :)

If she stays in the studio happily napping (no matter how loud I play)...then I know the tone is perfect and I stay with that guitar/amp combination.

If she gets up and leaves...I try something different. ;)


:D

No kidding though...my cat loves to hang in my studio, and the music never bothers her...even when I crank the amps at times.
 
I usually let my cat decide if the tone is good or not. :)

If she stays in the studio happily napping (no matter how loud I play)...then I know the tone is perfect and I stay with that guitar/amp combination.

If she gets up and leaves...I try something different. ;)

:D

No kidding though...my cat loves to hang in my studio, and the music never bothers her...even when I crank the amps at times.

That's funny. :D I'm always amazed that my beagle will lay down in the room, head not 10 feet from the speaker cab, when my rig is turned up to medium loud. Probably waiting to be fed. ;)
 
studio_cat.jpg


This is an older picture of her sleeping on my monitors...but not too long after that, I moved her "spot" over to the old CRT screens (you can just see one of them in the back)...'cuz I have another cat that also likes to come and hang too...
...so there was no room for both of them on my monitors.
I don’t really use the CRT screens any more and I’ve wanted to get rid of them and use that space for something else…but I don’t want to take away the cat's favorite sleeping spot! :D

Usually the minute I walk into my studio...she's right behind me, and up she goes to her spot, and she will stay for as long as I stay in the studio...the other cat usually shows up a little bit afterwards.

So yeah...the cats certainly have "unbiased ears" ! ;)
 
I feel responsible for my dog's near-total deafness in his old age. Living in a house with me can't have been good for his hearing. But he can still hear well enough to know to leave the room when I start singing.

But I wouldn't totally discount the opinion of a novice. If you think about it, the majority of listeners aren't going to know a Fender from a blender. The fact that something sounds more pleasing to a layperson might mean it'd sound more pleasing to an audience.

But cats though, cats don't know shit :)
 
That's funny. :D I'm always amazed that my beagle will lay down in the room, head not 10 feet from the speaker cab, when my rig is turned up to medium loud. Probably waiting to be fed. ;)
My boxer Zeke (RIP) would whine and cry at the studio door when we were rehearsing until someone would let him in. He would lie down between the bass and drums and stay there until we shut the amps down.

I really miss him.
 
Yeah, ggunn, I understand. I had a Beagle/Jack Russell Terrier mix that used to LOVE to go mountain biking with me. He could run right along with us for 10 to 20 miles, and want more.

"What does a dog and mountain biking have to do with tube amps?" you ask? Not a DAMN thing, but then neither does a cat that naps on your monitors, so can we please get back on subject, here??:p
 
Yeah, ggunn, I understand. I had a Beagle/Jack Russell Terrier mix that used to LOVE to go mountain biking with me. He could run right along with us for 10 to 20 miles, and want more.

"What does a dog and mountain biking have to do with tube amps?" you ask? Not a DAMN thing, but then neither does a cat that naps on your monitors, so can we please get back on subject, here??:p

Well i have both solid state and tube amps and my cats run from both of them.But back on topic.If you're selling one the amps just sell the one you like the least.

If you're having that hard of a time deciding then don't sell any of them cause you know you'll regret it later.I miss every amp i parted with for the most part.
 
I order for a test like this to be valid, you would need to pair each amp with the speaker that sounds best with it. Also each amp would need to be run at it's sweet spot. Running all of the amps at the same volume level into the same speaker cab would yield skewed results. You would need to record each amp running at it's optimum level with it's complimentary speaker, then play them back at the same volume.
 
I order for a test like this to be valid, you would need to pair each amp with the speaker that sounds best with it. Also each amp would need to be run at it's sweet spot. Running all of the amps at the same volume level into the same speaker cab would yield skewed results. You would need to record each amp running at it's optimum level with it's complimentary speaker, then play them back at the same volume.
And even then it's just a technical comparison. You'll need to spend time playing each amp to its strengths and decide which one you like the least. Or you could just keep them all, which is what I'd do. I'm still kicking myself for selling that '62 Fender Showman back in the late 70's.
 
Or you could just keep them all, which is what I'd do.

I agree.

I have a bunch of tube amps, and have been slowly expanding my collection.
A buddy asked why all the amps...?

I told him it was a question of having tone/feel variety, as there is never one amp that works for everything, and that especially holds true in a studio environment.

Now some guys will try to solve the multi-tone option by have one amp and a bunch of pedals...and that can work up to a point...but there's still a difference between pedals and individual amps for different flavors.

Heck...a bunch of amps PLUS a bunch of pedals is even better! :D

Also...you never get back $$$ what you pay for an amp...so before you sell one that you already own...think twice...'cuz it will cost you more to get it back if you decide you shouldn't have sold it in the first place.
 
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