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KRUSE Variac
PowerScale Module
KRUSE VARIAC POWER SCALE MODULE
SOUND CLIPS: SCROLL DOWN TO PAGE BOTTOM!
Prolongs Tube Life - No Tone Loss
WORKS ON ANY TUBE AMP !
- Extreme down scaling, like from 180W to 5W or from 30W to 1W.
- This mod does NOT work like an attenuator, no signal gets attenuated.
- The output power is reduced via circuit.
- A rotary switch is installed. The lower you go on the wattage the cooler the tubes run because they dissipate less power.
- Tube life is PROLONGED .
- The power tubes become clip and become more saturated, thicker and richer sounding at much lower volume, allowing for old school Vintage overdrive.
- You can bring powerful amps to small venues. Just scale it down to the required output level.
- Great for recording !
- Your spouse won't shut you down or divorce you !
- Your neighbors won't call the cops !
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
For inquiries please call 818-333-6781 or email info@krusekontrol.com
Photo Below: KRUSE VARIAC on a MESA TRIPPLE RECTIFIER:
Scale down gradually from 150W - 50W - 25W - 10W - 3W
Photo Below: KRUSE VARIAC on a MESA 2:100:
Scale down gradually from 100W - 50W - 25W - 10W - 5W
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Photo Below: VARIAC POWER SCALE on a Peavey 6505+:
(also works with 5150 amps)
Scale down gradually from 100W - 50W - 25W - 10W - 5W, crank the volume knob and get nice power tube saturation at low volumes.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: VARIAC POWER SCALE on a Marshall JCM800 2203:
Scale down gradually from 100W - 50W - 25W - 10W - 5W, crank the volume knob and get nice power tube saturation at low volumes.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: VARIAC POWER SCALE on an ENGL SAVAGE 120:
Scale down gradually from 120W - 50W - 25W - 10W - 5W, crank the volume knob and get nice power tube saturation at low volumes.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: VARIAC POWER SCALE on a Marshall JCM900 4100:
Scale down gradually from 100W - 50W - 25W - 10W - 5W, crank the volume knob and get nice power tube saturation at low volumes. With this amp model the tone gets better at the lower output settings !
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo below: VARIAC POWER SCALE on JET CITY 20:
Scale down from 30W - 15W - 10W - 4W - 1W
I actually measured 30W max output for this amp ! At 1W fully cranked the amp gets really nice power tube saturation for the dirty channel and the clean channel breaks up beautifully and sounds very Class A.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: VARIAC POWER SCALE on EVH III 100W:
Scale down gradually from 100W - 50W - 25W - 10W - 5W, crank the volume and get nice power tube saturation.
I added more gain to ch2 while installing my SuperSonic mod which opens the amp up on ch1+2 plus more penetration and articulation across all 3 channels.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: VARIAC POWER SCALE on a DIEZEL VH4 (w. 6550's):
Scale down gradually from 140W - 60W - 30W - 20W - 10W, crank the volume and get nice power tube saturation.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: Marshall Plexi Re-issue with VARIAC POWER SCALE:
Select from 100W - 50W - 25W - 10W - 5W
This head had a high gain mod installed by another technician and this mod loves the Variac mod. Very saturated high gain at the lower wattage settings !
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: Variac Power Scale Mod on an ENGL Invader 150:
You can dial in as follows: 150W - 60W - 30W - 10W - 5W .
At the lower settings, ch1 gets super Vintage sounding, like a cranked Vintage Plexi or Hiwatt. Ch2/3/4 get super saturated at low volume levels, a joy to play and covers any music genre.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: Variac Power Scale Mod on an DIEZEL HERBERT:
You can dial in as follows: 180W - 60W - 30W - 10W - 5W selected via a rotary switch. At the lower settings tone is very saturated down to practice or even bedroom levels.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: Variac Power Scale Mod on a Mesa Rect-O-Verb:
You can dial in as follows: 60W - 30W - 10W - 5W - 3W .
The high gain tone becomes super smooth at the lower power settings. You just crank the Master Volume to add rich harmonics at practice volume levels.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: Variac Power Scale Mod on a Hiwatt DR103:
Select from 100W - 50W - 25W - 10W - 5W .
At the lower settings, crank the Master Volume and get a very nice Vintage high gain tone which is super smooth with rich harmonics at practice volume levels.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: Variac Power Scale Mod on DIEZEL D-MOLL:
You can dial in as follows: 100W - 50W - 25W - 10W - 6W .
Works really well and amp sounds very saturated at lower volumes without loosing harmonics or bottom end.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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This Marshall Plexi's VARIAC POWER SCALE mod goes from 100W - 50W - 25W - 10W - 6W . At the lower settings this amp overdrives very nicely without the need of a Master Volume !
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Below is the Variac Mod installed on a 100W Plexi. The pot on the left lets the user gradually decrease output power at power tube level. In this case from 100W to 10W (fully cranked). It created a saturated brown sound.
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: VARIAC + TARANTULA MODs for Line 6 Spider Valve MK-II
Variac selection: 50W - 25W - 12W - 7W - 4W (very saturated fully cranked)
CAN BE INSTALLED ON ANY TUBE AMP MODEL !
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Photo Below: Line 6 Spider Valve HD100 with VARIAC POWER SCALE + new TARANTULA Mod (hot rodded tone):
Down scale: 100W - 50W - 25W - 10W - 5W
This amp has a DSP preamp with 12 amp models and the most important effects. The power amp is a Bogner design and run by 4x 5881's.
Testimonial by Gabriel A. - Fresno, CA
For my Diezel D-Moll I wanted to try the KRUSE VARIAC since you are always challenged to turn down your amp by venues and yet try to get the tone you like at lower volumes without the tubes really getting the right level of power, so the variac is the solution for this:
No thinning of sound, the complete opposite to power breaks !
Highly recommended for all amps, truly professional and personable service ! Kruse Kontrol : A+G (of Metal Band HateFX)
Testimonial by David Van Buren - Lebanon, TN:
The Kruse Variac in my EVH-III 100W is way cool. It does not alter the tone in any way when you scale the power down. You actually get a different feel depending on how you want to play. It just adds to the versatility of this now amazing amp.
Testimonial by Andrew Bojanic - Los Angeles, CA:
Many thanks to Jens for tweaking out my 80's JCM 800 and adding his killer VARIAC. Sounds amazing at 100w and still loud and rocking at 5w.
Great one.
Andrew BojanicWizardz of Oz
Superpop.coTestimonial by Tony Kim - Ridgecrest, CA:
EVH III 100W : THIS VARIAC MOD allows for the same tone at lower more humanly survivable levels, yet retains the original tone. I have an expensive Koch attenuator and it does not sound this good!!!
Testimonial by Jeremy Aliaga - Los Angele, CA:
EVH III 100W B-2 Stealth Modded: The Kruse Variac is just plain cool and gets cranked tones at bedroom-volume levels. Perfect for someone like me who plays a lot at home.
Testimonial by Greg Sanger - Los Angeles, CA:
Hey Jens, Greg Sanger here, I've finally had time to spend with my Plexi you modded, I am really happy, it sounds really great, very happy! The VARIAC MOD is working and sounding great. Although this is such a less flexible amp than I am used to, with the mods you've done, and the pedals I have, I can't believe the tone, this amp is so much more responsive to the guitar and pedals than so many modern amps. Thank you again!
Testimonial by Tony Kim - Ridgecrest, CA:
Marshall Plexi 100W re-issue: It had a high gain mod installed with dual master volume plus gain/boost mods, but I wanted to drive the power tubes at a lower volume. I just got it home and could not stop playing for 5 hours!!! This amp sounded great before, but now with this VARIAC MOD it sounds stellar !
Testimonial by Ed M. - Los Angeles, CA:
I have a Mesa Recto 2:100 power amp (200 watts Stereo) it is difficult getting lush tones at low volumes. I mentioned this problem to my friend Eric (Eric’s Guitars) and he highly recommended Jens Kruse owner of Kruse Kontrol. Once I met Jens I knew I was in good hands, very friendly, honest and extremely knowledgeable (He is the real deal!) He recommended his Variac modification and took his time explaining to me so I would understand just how it works. I few days later he let me know it was ready, and I took it home. GOOD LORD! Were the first words out of my mouth, this thing is on a whole nother level now, unbelievable Gain, bite, grit and attack at lower wattage settings, and without eliminating tubes like Mesa does. It is now 5, 10, 25, 50, 100 Stereo! I couldn’t be more pleased! When he pull the amp's cover off to show the Variac Module, I was floored! His work is so clean, it looked factory. He is the real deal, and I can’t wait to bring him my other amp.THANK YOU JENS!!!
Edwin M.
Testimonial by Roland W. - L. A. :
When I first got my Peavey 6505+, I needed to play it quietly in my apartment, so I asked Jens @ Kruse Kontrol Amps to install his Variac Mod.
First of all, the Variac mod is a life saver! I get to play through my real rig and with exactly the sound I want, but at volumes that don't disturb the neighbors.
SOUNDCLIPS:
Recorded with an SM57 in front of a 4x12 cab with V30 speakers.