PreBS TT40

The first Sweet Low Power Tweed Twin build is completed! This is one of the most unique and  interesting Fender tweed era models with dual rectifier tubes, a unique pre-amp circuit, cathodyne phase inverter(like tweed Bandmaster and Princeton Reverb),  and a quite large output transformer for a pair of  6L6 power tubes. As always, I’ve added a few extra features for versatility like separate pre-amp cathode resistors and caps for less interaction between channels and the ability to use different tubes for each channel. I’ve also added a gain switch for each channel, push-pull brite switch for each channel, bias trim pot, and a negative feedback switch.

The result is a beautiful touch sensitive tweed tone with lots of character and compression when pushed. Well suited for any rootsy musical genre! Output is 25W-45W depending on power and rectifier tubes used but sounds best to me with the stock dual 5U4G and 6L6GC combination.


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Tube Cage for Fender Blues Jr and Pro Jr

As an amp tech for several decades, I cant tell you how many broken and bent tubes and damaged sockets I’ve seen in Blues and Pro Jrs. The new III version comes with a  cage but it is not available as an accessory. So, at the request of a regular customer, I made a couple of protective tube cages and then decided to make them available to everyone.

They are available to purchase on or if you are in the Chicago area, you could buy direct from me at Chicago Fret Works/Amp Works, 4229 N. Lincoln Ave, Chicago IL 60618   773-698-6246  SOLD OUT!

Pro Jr $20   Blues Jr $22

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McKoustic 30 combo

Introducing a new Sweet combo for acoustic instruments, the McKoustic 30! Another McKeever collaboration with my dad who built the cab from solid cherrywood and finished with hand rubbed oil/urethane. The sealed and ported cab features  full range Eminence 10″ and 3″ drivers for a natural reproduction of your acoustic guitar, mandolin, guitaron, uke, or violin.

The pre-amp has been tuned specifically for acoustic instruments and features a feedback control section with selectable frequency and level control as well as a push-pull bass cut and push-pull bright control.

Tested with a passive K&K equipped boutique guitar as well as a modern Seagull with active Fischman pickup and pre-amp system. This amp will sound like your guitar but louder! Bring your acoustic guitar/instrument for a demo to Chicago Fret Works before the client pickups it up!

* This is also the prototype for a similar all tube bass combo coming soon!


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PreBS 15+15

A custom ordered PreBS 15+ with 15″ speaker and Mercury magnetics trannies for 6V6 or 6L6 power tubes and output from 18W-36W.  It also features the new user accessible bias pot and test points on the rear panel. This new taller cab size will now be available for all PreBS 15 and 15+ models for a $100 upcharge. It will accomodate a 10, 12, 15, 2×10, or 3×8 speaker configuaration offering yet another way to perfectly dial in your tone and volume for the gig, genre, or recording session. For fender lovers and those who dont think they like fender style amps. Not your daddy’s princeton!


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PreBS 20+ Cherry

Another gorgeous cherrywood cab with hand rubbed oil finish built by my dad in Pennsylvania! This one has all of the usual features plus user adjustable bias on the rear panel. Just set your meter to the mV scale, attatch the probes to the test points, and turn the pot to the recommended setting.  You can use 6V6 or 6L6 power tubes and all of their variations as well which include ; KT66 and 5881. Experiment away and get just the right tone and headroom for your gig or recording project. Save $ by doing it yourself!

And, the holiday special applies to this one too! No upgrade charge for the hardwood cab, same price as regular PreBS 20+!

Regularly $2125   Now $1925               SOLD!

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PreBS 15+ Dark Red Cherry

Another Sweet collaboration with my dad who made the gorgeous red stained cherry cab. It’s got all the usual, Mercury trannies, push-pull bright and mid boost, negative feedback control, and like all + models, can use any 6V6 or 6L6 type power tubes to dial in the tone and power(18W-32W) needed for your gig or recording situation. All PreBS series amps now feature user adjustable bias on the rear panel to make swapping tubes easy and less expensive. Do it yourself and save $50 or more every time you change tubes!

*Every handmade hardwood cab is unique so if you like this one, don’t wait. There wont be another exactly like it!




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First Trade Show

Sweet Amplification attended our 1st trade show. The local Alchemy Audio hosted Gear Swap at Fort Knox rehearsal studios was a lot of fun and good practice for bigger events. Thanks to all who stopped by the table and to Pete Pena from Command Performance who shared the table so that we would each have some floor space!

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PreBS 15+ Wine/Vanilla

A new Sweet PreBS15+ build commissioned by my employer/owner of Chicago Fret Works/Amp Works is completed! All of the usual features like push-pull mid boost, push-pull bright switch, and negative feedback control plus Mercury Magnetics transformers for 6V6 or 6L6 power tubes, USER ADJUSTABLE BIAS, and PROGRESSIVE STANDBY/POWER SWITCH! It’s super cool when your boss believes in your product enough to buy and use one himself. Thanks Steve!


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PreBS T5 Solid Cherry w/10″ speaker

Another PreBS T5 collaboration with a custom cherrywood cab built by my dad. This one has a NOS 5V4G rectifier and an oversized 8 ohm Mercury Magnetics output transformer(many speaker choices) for 6L6 or EL34 power tube, and a 10″ Eminence Lil Buddy hemp cone speaker which compliments both clean and overdriven tones! As always, it features a 3-position gain switch for versatility and another super soft high quality handle from El Dorado. The undisputed King of Champs!


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PreBS T5 Cherry

A PreBS T5 in a solid cherry wood cab. The first Sweet hardwood cab available for purchase is on the showroom floor at Chicago Fret Works/Amp Works. Finished with clear nitrocellulose lacquer which will darken with age like a vintage Fender headstock.  Loaded with a Weber signature ceramic speaker for a nice tight response at lower levels and smooth distortion when pushed. Add to that my exclusive 3-way rotary gain switch and a premium quality El Dorado leather handle and you have the ultimate studio and collectors amp. A Champ for the ages!

$895  *(special offer until end of 2017)   $795!   SOLD!

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