Help Me Explain Power Cables to my Guitar Friends


Guys, I need some help!

I have suggested to some of my guitar geek buddies that they could improve the performance of their tube guitar amps by replacing the power cords. Now, I know that many here already believe in the qualities of upgraded power cords. But I can't convince my guitar buddies; they won't even try it because they say, "You need to show me some scope measuresments before I believe this 'snake oil' stuff about power cords."

Does anybody know of some way you can "measure" power cords that would "demonstrate" that they can improve performance? Help me out here!
crazy4blues
Lkdog, you might have a point about the modeling amp. I use an Hughes and Kettner Zentera modeler around the house for practice (decent tones and flexability at low volume). I'll have to swap on a good power cord just for grins.

For playing out (rare these days) it's either a Soldano Decatone or a Groove Tubes Soul-o 75. I don't know that I'd want to bring an expensive cord to the places I go to play...

Daveyguitar, you're right about the higher quality guitar cords on the market. They beat the cheapo microphonic cords of years past (think Hendrix with that silly coiled cord going to his Marshall). The metal guys I know don't care about cords, but the jazz guys I play with do.

As a lot, guitar players tend to be very conservative on gear and its hard to convince them to incorporate new technology of any kind. Even cutting edge technology such as digital modeling amps is largely employed to emulate the sounds of classic 50's and 60's amplifiers.

I remeber reading something written by Walter Becker and Donald Fagan about the guitar player as the noble savage holding a vintage Les Paul. The comment is not far from the truth (and I resemble that remark)!
I spent the better part of my ‘first life’ working in sound reinforcement and the recording sciences and can somewhat understand a musician or even sound engineers’ reluctance to sample a higher quality power cable.

Our company is beginning to expose wire technologies along with our versions of resonance control to the professional music markets and also find it more difficult to describe the benefits thereof. Even suggesting the placement of our resonance control Platforms beneath guitar amplifiers was more challenging than first getting an audiophile to listen to one.

One of the coolest results that I have experienced is the look on the face of a guitar player when he first hears and feels the results of resonance control. I believe the look would be somewhat similar when they employ a higher grade power cable as well.

There is an excellent designer/manufacturer of valve amplifiers here in the States that also has a Degree in sound and vibration along with Quantum Physics. He originally hails from Great Britain and is definitely one of the most knowledgeable persons that I have encountered in all my years of touring and including high end audio.

His name is Robert Wakeling of Palette Amplifiers. www.paletteamps.com

In my honest opinion and throughout my experience listening to many a guitar amplifier, his designs are simply the finest sound I have encountered. I also know that he is currently experimenting with various power cords that are sold within our High-Fi community so you may wish to contact him as he might offer up some hands on information in order to help with your situation.

As Always - Good Listening !

Robert C. Maicks

Star Sound Technologies, LLC

1-877-668-4332 Toll Free
ghostrider, you are way off on the association of clean power and distortion. There's good distortion and then ther's bad distortion. I play a Dr Z (Prescription) amp. All his designs are based on power tube distortion rather than preamp driven distortion both of which are hugely different from bad power distortion. Clean power, high dollar propriatary caps, matched tubes, NOS tubes, point to point wiring all add to these amps not take away. They have massive transformers to keep the bottom end tight and they are among the most touch responsive amps and dynamic out there. The notes are very articulate and defined. A players dream amp. Victoria, Matchless, Swart all the same deal.

Some guitar players are getting into the high end patch chords (George Ls for ex) and good speaker cables but as a player with 30+ years of gigging i have to say patch cords are questionable unless you are recording and get real about the power cord thing. The idea of trashing an $80 cord on a $50 dollar gig isn't all that appealing. Half of the time you are playing a bar with out-of-date-ground-loop-from-hell electrical, beer lights that send more signal through your single coils than your playing does, shoved into a corner of a no acoustics dive playing to loud patrons who think you are a live jutebox. If you want a real difference for the real world a player should get something to keep line voltages where they should be. Resonance control as mentioned above is a benifit as well.

All the potential improvements from cords assumes the guy has spent money on a high quality responsive amp in the first place. A lot of guys think it's nuts to spend $1500 or better on an amp. Spending money upgrading a mass production fender blues Jr is nothing but a waste (nothing particularly bad about a blues Jr but it is what it is).
Piezo, I think you missed my point. Like it or not, many classic guitar amp sounds are the result of imperfection and happy accidents. Consider the classic Marshall, Fender, and Vox amps as examples.

That doesn't mean that you can't build a premium amp that also sounds very good. I didn't mention it above, but I also have a mid 90's Matchless HC-30. It's a cathode biased EL84 amp, based of the Vox AC30 design and tuned for great power amp distortion. It has hand wound transformers and point to point wiring. I love it for rhythm work - it has a greasy, buttery distortion that really augments your playing. However I also like preamp distortion for solo work - there's something magic about having tons of controlled, well articulated sustain at your fingertips.

The Groove Tubes Solo 75 is a compromise - it can do nice preamp distortion and wicked power amp distortion. You can select Class AB, grid biased Class A or Cathode biased Class A for the output stage from rear panel switches.

For awhile I had a rack mount processor from ADA called the Ampulator. The purpose of this thing was to simulate big amp power tube distortion using a 12AX7. It gave the user front panel control over bias, amp class (A, AB), feedback, tube balance, and power supply hum leakage. Playing with these controls was very instructive - for example the sounds of some classic amps depend on some hum leakage for the rough, false note tones they can generate. I came to appreciate how much imperfection, cheap parts, and design limitations influenced the classic amp tones.

Let's not forget speaker distortion. A Celestion 30 sounds very different from an EV-12M at 100 watts.

My Matchless simply doesn't get some of those really raunchy early rock tones, though it's a wonderful amp on its own terms. THere's more than one approach to interesting guitar tone.
Hey Crazy4blues An interesting situation that you have. My suggestion when one of these musicians says that they must see scope measurements, I'd throw them a fast ball smack damb directly back at them. Ask them why the "H" do they use a TUBE based amp when a SOLID STATE amp likely measures better.

Furthermore, most well-built solid state and tube amps will measure quite well in terms of the standard measurements used to rate amplifiers. As that is the case, why would a musician 99 times out of 100 use the tube amp over the solid state amp? Hell, with the solid stater there are no tubes to fail, they cost less, etc.

As an aside, I've nerver heard of a musician with much understanding of an oscilliscope. Given that a musician wants to use a 'scope to verify that one cord cannot be better than another, I'd be very curious what specifically they wish to observe on a 'scope that provides a definitive answer.