Butler tube driver the core circuit design on the 2000s reissue 911 tube driver is similar to the original 198587 versions, but there were several component value changes across the circuit that affect the way it sounds, as well as different pots. The 5814a is a militaryindustrial grade 12au7 with low noise and highreliability spec. Nov 28, 2009 many valve amps made today are replications of pre 1950 technology when valve amp designs and performance was restricted by limited knowledge and component technology. Mullard 12au7 reissue sound compare to nos steve hoffman.
Ecc83 12ax7 mullard tube original box preamp driver tubes. Bravo audio v2 class a 12au7 tube multihybrid headphone amplifier looking for a highquality headphone amp or to dip your toes in the world of tube audio. By using modern components and innovative solidstate driver circuitry we are now able to make a valve amplifier that is considerably superior to the valve amps of the past. It also performs best with clean, highwattage amplifiers with plenty of headroom such as the hiwatt amps that mr. I acquired it from a friend whos grandfather owned a recording studio, and it was used.
Chandler tube driver gearslutz pro audio community. I should get more, rather than spending more cash on other mfrs 12au7s. Today, were going to swap the stock 12ax7 in the b. The tube driver is being used on the main drum sound through out the song as well mostly on the snare.
Preamp 12ax7s in my guitar amps are warm to the touch but 12au7s in my hifi preamp if i recall correctly are. Its based on a standard textbook design from a local magazine silicone chip which used a 12ax7 but im using 12au7s instead because they make a much better line driver. Bravo audio v2 class a 12au7 tube multihybrid headphone. The tonekit allows hifi and guitarists alike to experiment and tuberoll preamp tubes in different slots of their amp. Here at chandler amps we custom build hand wired, vintage style tube guitar amplifiers. I have a rack mount chandler tube driver and a bk butler real tube pedal coming my way. Yes, had all 3 bk butler, chandler, and the dm overlord. Butler tube driver wmullard ecc82 nash stratocaster wlollar special. Heart of the tube driver is a real handselected 12ax7 tube by bk butler himself. A tube is not included in the kit, you can select it suitably to your project. Steve, could you tell us your ranking of the 12au7s steve.
The chandler tube driver is a real tube based overdrive guitar pedal. I should get more, rather than spending more cash on other mfrs 12au7 s. Everything is there and shes as clean as the pics look. Chandler tube driver rack i know there is some controversy over the bk butler situation but that none withstanding the 1 up racks are reasonably rare to come by and have the famed bias control. Driverinput tubes i need somebody to either explain or steer me to an explanation of the 12ax712at7 tube s purpose in my jolida jd502p power amp. When we slam the drive, the opamp heavily compresses the signal.
It is made in the usa has a 14 inch input and output and i believe is has a 12ax7 type tube. Im using a tube rectifier here because i think having one tube the 12au7 sticking out of the preamp looks weird. I was pleased with how well it turned out, at 30 bucks it looks pretty professional with the solid gold plated jacks on the black case. These are great as far as they go, but they dont provide dirt from the output section of a tube amp the ot and speakers. The stock tube that ships with the 911 tube driver made since 2006 is a golden dragon 12ax7 a low noise, hifi preamp tube.
This schematic below is a simple two stage linelevel preamplifier using a single 12au7 ecc82 tube per channel. I get preamp tubes in a preamp, but ive found it difficult to find a clear explanation of what the driver and input tubes are actually doing, and their relative importance to the sound of the amp. Ive only ever heard one, and it sounded good but i had nothing to ab it against. Best tube for my chandler tube driver the gear page. After finished my simple 12ax7 tube preamp, i decided to try other medium mu tubes, including this 12au7 and also the 6922. Its like changing the types of tubes anywhere from a weak 12au7 to a blistering 12at7. My first diy tube preamp, based off of this project. Butler has always made these stock with 12ax7 tubes, but owners typically experiment with. The tube isnt functioning the way a preamp gain tube operates in an amp anyway. Nov 25, 2008 i was pleased with how well it turned out, at 30 bucks it looks pretty professional with the solid gold plated jacks on the black case.
Shown above left to right eric johnsons 1985 chandler branded tube driver, his 198687 period bkb chandler branded tube driver with chandler blacked out, and his 20052006 period bkb branded 911 tube driver. Any experience with an original bk butler tube driver. Chandler tubedriver pedal od effects clean overdrive 12ax7. In response, chandler created their own unauthorized tube driver. I was away to stick in an order for some new 12ax7s to replace the crappy ones that are in my amp right now, would it be worthwhile to replace the 12au7 s aswell, or do they not affect the sound as much. Because of the filtering going on in the tube driver circuit it is usable both ways. For greater savings check out our used chandler tube driver guitar preamp and get a great deal today. The yellow led is to indicate that the tube filaments are active. This is a the 4 12ax7 version of the dougs tubes preamp tube cocktail kit and weve received great feedback on it. The design is exactly the same as the 12ax7 preamp, it is a single gain stage triode tube with cathode follower. Im not sure what motivated me to decide on building a highgain tube preamp of this sort. Chandler tube driver real tube overdrive tubeworks reverb. Compared against a chinese shuguang tube, the sound quality is comparable as both tubes have a similar audio response. Then i engrave my signature on the bottom of the case.
Compared against a russian electroharmonix tube, the jj valve has a slight v characteristic thats warm without as much midforward response. Preamp 12ax7s in my guitar amps are warm to the touch but 12au7 s in my hifi preamp if i recall correctly are. Likewise, expect the 12au7 to sound a bit muffled at first before it breaks. The chandler tube driver in davidas rig from 19932006 has a slightly. Shown above left to right eric johnsons 1985 chandler branded tube driver, his 198687 period bkbchandler branded tube driver with chandler blacked out, and his 20052006 period bkb branded 911 tube driver. The jj 12au7 is built in the same fashion as the legendary 12ax7 jj. David gilmour has been an avid tube driver user since around 1993.
Xiangsheng 728a hifi vacuum 12at712au7 tube preamplifier stereo. It is unmarked, other than bk written on it with a sharpie. The chandler tube driver in davidas rig from 19932006 has a slightly warmer tone than the new bk butler model in davidas rig from 2006. My siding with the 6sn7 tube over the 12au7 is actually based on the air and ambiance, and complete lack of noise i have received from good octal tube preamps. Please either pay in full in advance or 50% up front and the balance before shipping. The tonekit allows hifi and guitarists alike to experiment and tube roll preamp tubes in different slots of their amp. The bk has a bit more presence and a generally more aggressive tone. Tonewise, i would perhaps place the chandler somewhere between a tube screamer and a bk tube driver. The overall voltage gain of the circuit is about 8. Maybe it was the tube computer sound card idea i have seen, or the fact that i have enough junk to fill a dump truck.
The tube driver is wellsuited to tube swaps, sounding mellower and somewhat more compressed with a 12au7, rather than the stock 12ax7. This is an excellent upgrade for hybrid headphone amps requiring a 12au7 preamp tube. Tube testing equipment why we dont sell certain brands filter by all 12at7 ecc81 6201 cv4024 12au7 ecc82 cv4003 5814 12ax7 ecc83 cv4004 5751 6922 6dj8 7308 pcc88 6sl7 5691 cv1985 6n9 6sn7 5692 cv1988 6n8 hide price. What is the tube it is supposed to use according to the schematic. May 10, 2010 my first diy tube preamp, based off of this project. I recall the bk butler having heaps of gain too much imo. He first used them in the recording sessions for pink floys division bell album.
But i wouldnt worry too much about which particular brand of tubes, or new vs. Some used 4 knob tube drivers marked chandler are not the original design by bk butler. Basically, this pedal allows you to run your signal through two 12a. I personally tune each one by ear for the best tone that fits the players needs. I have a wavelength napoleon power amps that use this similar tube and have found that this is a great way to.
The output stage of the circuit is a cathode follower and is suitable to drive a low impedance amplifier. Butler tube driver the core circuit design on the 2000s reissue 911 tube driver is similar to the original 198587 versions, but there were several component value changes across the circuit that affect the way it. Does anyone here have experience or own these units. Compatible with all electric guitars and amplifiers. The 12au7, being a slightly lower gain tube than the 12ax7, was slightly smoother and cleaner sounding at low drive settings in my old bkb chandler tds, but there was a less noticable difference in my 911 tube drivers. Trust me this electroharmonix 12au7 is a strong long lasting performer, that sounds good and has no harmonic or any flaws that i can hear. When using the tube driver as a parallel blend you can use it 2 ways. Those same sessions also resulted in the division bell companion album, pink floyds the endless river, which was not completed until 2015. And why not more linear 6dj8s or 6sn7s, well because id rather use the much maligned 12au7 and in this layout they work nicely. Secrets revealedwhats inside this bk butler tube driver real. Solid construction and extreme attention to detail make this tube one of the best preamp tubes in production today.
To have a 12ax7 tube in a pedal was a unique thing at the time. A neat feature i added later on is the ability to adjust the brightness of the front led. What a great toy, a fantastic sound, i know there was a. This guitar preamp circuit for over drive before to the power amplifier or headphones. But also out of curiosity i may still try other brands. Used chandler tube driver guitar preamp guitar center. Some used 4knob tube drivers marked chandler are not the original design by bk butler. Steve, could you tell us your ranking of the 12au7s. It can also replace the preamp section of my guitar amp, which is a peavey, and borrow the sounds of fender marshall vox from its to. Chandler tube driver real tube overdrive tubeworks. Thats the cool thing about these, you can easily modify them. Jan 10, 2018 12at7, 12ay7, 12au7 instead of a 12ax7 might tone it down.
Its commonly used as the phase inverter in some hifi amps, ampeg and fender amps. Bk butlers original hand made tube driver guitar pedal used by eric johnson, david gilmour, billy gibbons, joe. Chandler tube driver foot pedal awesome distortion if your looking at this you know the perfection that is the chandler tube driver. Utilization the general configuration of the tube driver is really easy to follow, and it is easy to get a good sound from this.
Jul 02, 2016 the words tube driver are marked with a tm, as the tredemark registration had not gone through yet. All tubes, whether itas your amp or a pedal, need some time before. Tube depot carries a selection of 12ay7 6072 pre amp vacuum tubes. Original bkbchandler branded tube drivers from 198687, and the cheap. This one is in excellent condition from my personal collection. Comparing 12ax7 vs 12at7 as the driver in the mcintosh mc40. The distortion on my first td was a bit too rough at low drive settings for my taste, so i swapped out several different 12au7 tubes. I have a bk butler blue tube that i have altered to use an octal preamp tube and installed a 6sl7 tube. Well i got my bk butler tube driver wbias mod today and ive fiddled with it for a few hours and im still well in first impression territory but i have all too much to say about this pedal, so sorry for the short storybook im about to write. Tube testing equipment why we dont sell certain brands filter by all 12at7 ecc81 6201 cv4024 12au7 ecc82 cv4003 5814 12ax7 ecc83 cv4004 5751 6922 6dj8 7308 pcc88 6sl7 5691 cv1985 6n9 6sn7 5692 cv1988 6n8 hide price misc. Chandler tube driver rack gearslutz pro audio community. Bk butler chandler tube driver telecaster guitar forum. Just the different types, 12ax7 for distortion, 12au7 for least.
Jjtesla electronics ecc82 12au7 preamp tube, brand new. I was away to stick in an order for some new 12ax7s to replace the crappy ones that are in my amp right now, would it be worthwhile to replace the 12au7s aswell, or do they not affect the sound as much. The distortion on my first td was a bit too rough at low drive settings for my taste, so i. The words tube driver are marked with a tm, as the tredemark registration had not gone through yet. Good tube good solid performing preamp tube for the money. It lets you overdrive your amps preamp, and you can get a real nice, chunky sound with it.
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