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FDP Forum / Fender Amps: 1985 - Current / The Prosonic Club: Classy Fender clean to full out shred, with the press of a button!!!

Previous 20 Messages  


Apr 21st, 2012 07:58 AM   Edit   Profile   Print Topic   Search Topic

Just picked up a red lizard skin. Febuary '96 production.
Fender musical instruments on the chassis, sticker between the effects send/return, green jewel light, LO, custom shop and Scottsdale Arizona on tube chart inside amp.
The tubes seem to be original to the amp, that is, the ones that survived. the knucklehead I bought it from shipped it with the tubes attached and the footswitch inside the cab and unsecured. So the thing was bouncing around in there during transport, took out the power tubes and knocked out the rectifier tube. Thankfully no harm to the speakers. I had a couple of tubes laying around. So I put two EH6L6 in there.
The rectifier tube was intact but made a noise when you shook it. Took my chances and put it back in. I fired that baby up and was instantly impressed. It sounded so sweet. Only amp that ever made me say "wow" with just one chord.
After about two hours it started making funny noises and I assumed it was the rectifier tube. Read through this thread and based on some of your recommendations purchased some JJ6L6 and a JJ rectifier, also replaced the original Chinese fender preamp tube with some JJs. Popped them in and all is good. Yes it has the channel switching pop and reverb hum but both of those are non issues to me. And it runs hot!!!!! But I don't want to do anything about it cause it
sounds too good the way it is.

Contributing Member


Delta Blues Stringer
Apr 27th, 2012 04:44 AM   Edit   Profile   Print Topic   Search Topic

I have had my Prosonic since new in 2001. The tech service bulletins are all up to date, and I just re-tubed it. My fingers are paralyzed, and after 44 years, I've had to put down my guitars, but I've picked up the blues harp again after 20-somethings. I get real good clean channel breakup at around four using a vintage Shure Bullet mic with a low-Z XLR to high-Z 1/4-inch transformer. This is usually about the setting for neighbors to start calling the police. Is there something I can do to bring the breakup volume down? Also, I'd like to use the gain channel, only with a lot less of it. Would some valve changes help tame the beast?

Contributing Member


"we've gone thru your file and...
Apr 28th, 2012 08:00 PM   Edit   Profile   Print Topic   Search Topic

You could try a 5751 in the gain channel slot (v 2). The thing is...these amps aren't designed to be played really soft with the master down low and the gain cranked up. It's not an impressive sound. When you play out in a mid-size to large venue, the true beauty of this amp shines thru. I play out two nights a week in a small club with a Princeton Reverb. The Prosonic sits under my desk.


United States

Mar 3rd, 2013 02:49 PM   Edit   Profile   Print Topic   Search Topic

Well, I am new here, but thought I would post in this long standing thread.

I just picked up a Prosonic Combo amp this week. The guy said he bought it new in 1995 (not sure they were made then, but he seemed pretty confident). He kept the amp covered and well maintained. It looks like it just came off the shelf.

Loving it so far. Still messing with different settings.


The Netherlands

Dec 22nd, 2013 03:57 AM   Edit   Profile   Print Topic   Search Topic

For twenty-some years, the Prosonic has been at the top of my list, so I figured I'd move this thread back to the top of its forum.



Jan 16th, 2014 01:22 PM   Edit   Profile   Print Topic   Search Topic

Hey all you Prosonic People. I am new to electric guitar and amplifiers and am looking for some guidance. I bought a 1998 Prosonic combo about a year ago, i'm in love with it, and it's time to throw some new tubes in it (mine are starting to sound funny). I have ZERO experience with amplifiers or selecting tubes and could use some advice so I can choose the right tubes for a complete re-setup of the amp.

Because of this amps excellent capacity to get good and dirty I was hoping to install tubes that would exemplify the Prosonic's excellent clean tone (and of course still get good and nasty). I am looking for a complete swap out of tubes so advice on a complete tube setup would be really appreciated.

Thanks and keep jammin'

Contributing Member

Somewhere in Texas

Don't look at me with that tone of voice
Jan 18th, 2014 12:01 PM   Edit   Profile   Print Topic   Search Topic

I'd be the last guy to give you tube recommendations for any amp (due to my limited knowledge and experience), but shortly after I got my Prosonic head some years ago, I retubed with a full set of Ruby tubes with matched 6L6's from Antique Electronics Supply (a premier sponsor of the FDP). I was and am very pleased with the result, for not a lot of money, either.

Of course, if you have access to NOS tube stock from a trusted source, I am sure there are much better alternatives, but I get good value and performance from the Ruby's from AES.

(This message was last edited by BobbyMac at 02:02 PM, Jan 18th, 2014)

77 Hot Rod


Feb 19th, 2014 08:04 AM   Edit   Profile   Print Topic   Search Topic

Hello Prosonic users,

I'm considering to change my Prosonic combo in a head version. Most important reasons to do so are 1.reduce the weight
2.the chance to use different cabs with different speakers
3.I really need reverb so just get the head version is not an option for me.

Anyway, should a tech be able to mount a 4/8/16 ohm switch same as on the head without changing anything? Or does the head indeed uses another OT than the combo? I would like to change as less as possible on my amp you know so I can change back to the original combo when I want.


77 Hot Rod


Feb 19th, 2014 08:09 AM   Edit   Profile   Print Topic   Search Topic

Is this one stock on both the head and combo?

prosonic OT


Silicon Valley - USA

Less Gear / More Practice....I swear!
Feb 19th, 2014 12:13 PM   Edit   Profile   Print Topic   Search Topic

Hi All -

I'm considering picking up a used Prosonic, but I need help with the Effects Loop. For a dirty amp, I always run a little delay for leads. I normally use a MXR Carbon Copy, but I don't think this will work with the Prosonic. Anyone have successful experience using a delay pedal in the loop?


SF Bay Area

May 14th, 2014 10:54 AM   Edit   Profile   Print Topic   Search Topic

...I'm all in....I just picked up a Prosonic and my tech is giving it the business. Is the template for the 14" tilt-back-leg install still available?? If not, can somebody forward me the dimensions for the hole locations? Looking forward to playin" the beast !!!



Aug 3rd, 2014 02:24 PM   Edit   Profile   Print Topic   Search Topic

Count me in too! I bought my '96 2x10 combo (LO serial) a few days ago. Loving it so far. It has a HUGE "Pop" when switching channels and it gets HOT too. I'm hoping to research this thread for some clues and help on it, but for now I' really, really loving the OD channel. It's different from my Marshalls or even my Boogie Mark III Blue. It "feels" different (in a fantastic way). Setting the 2nd gain high and the 1st gain low adds so much to my playing. I wouldn't complain if it stayed on the drive channel forever.



Nov 4th, 2014 05:33 AM   Edit   Profile   Print Topic   Search Topic

Hi, I have a red 1997 Prosonic combo, with black grille-cloth. Haven't seen another, they all have the silver grille. Can anybody tell me if this is stock, or has been added later? I think it looks great!
thanks, Bill.

77 Hot Rod


Nov 15th, 2014 12:08 PM   Edit   Profile   Print Topic   Search Topic

This is what I'm playing now.....

Blond Prosonic

Contributing Member

SF Bay Area

Dec 4th, 2014 05:48 PM   Edit   Profile   Print Topic   Search Topic

..got me one of them blondes too!!!!

Living Life as a Blonde

Contributing Member

SF Bay Area

Dec 4th, 2014 05:50 PM   Edit   Profile   Print Topic   Search Topic

..hey, i'm looking for a little more low volume treble response...clarity....would a treble cap across the volume pot help me out any?



Nov 18th, 2015 01:44 PM   Edit   Profile   Print Topic   Search Topic

just bought a '96 LO.... clean channel is really dark and doesn't have the fender sparkle of the vibrolux that I was looking for.... Clean is dark and gain channel is too bright when eq'd for the cleans... Could that be a preamp tube? Probably needs all new tubes, maybe even caps. Any suggestions before it goes to the tech?



Nov 18th, 2015 01:46 PM   Edit   Profile   Print Topic   Search Topic

also, looked into doing the Zinky mods... the ceramic disc caps on the tube sockets? only one I see is on V1... will cutting that out brighten & open up the amp?



Nov 10th, 2017 01:06 PM   Edit   Profile   Print Topic   Search Topic

This is a nice thread even if the last post is 2 years old by now.

Anyway, I finally picked up a Prosonic at a great price. It's the best amp in the house now, among Princeton Reverb II, Super Champ and it's younger brother, the Supersonic 22.

This may not be my last amp, but it'll end up being the one I played the most.



England's Sloppiest Guitarist
Nov 10th, 2017 02:09 PM   Edit   Profile   Print Topic   Search Topic

I came *so* close to buying one of these from a fellow FDPer a few years ago after hearing him play it at an FDP Jam. Wish I had now as they're virtually never up for sale here now.

Previous 20 Messages  

FDP Forum / Fender Amps: 1985 - Current / The Prosonic Club: Classy Fender clean to full out shred, with the press of a button!!!

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