PreBS T12 Brown Western

The last Sweet build from Chicago just completed! PreBS-T12(Tweed Deluxe) 1×12 combo covered with brown western tolex, cane grill cloth, Mercury Magnetics transformers, Eminence GA-SC59 Alnico speaker(perfect compliment for this amp!), progressive standby/power switch, and a 3-position negative feedback switch to tame the excessive gain and hair trigger volume controls of a stock 5E3 circuit. Really makes for a more versatile 5E3 Deluxe!   Vintage and beyond! Next Sweet amp will be built in Tucson AZ and Rockin’ in the Free World!


Posted in Uncategorized | Comments Off

Sweet Amplification is Moving!

Hey everyone, Its been a good 25 year run in Chicago but it’s time for a new chapter. I moved here in 1996 during my “blues phase” and got to meet, play, record, and tour with some really great Chicago blues legends, new artists, and local players  including; Eddy “The Chief” Clearwater, Willie Kent, Guy King,  Rockin’ Johnny Burgin, Dave Hole, Detroit Jr., Big Time Sarah, Barkin’ Bill Smith, Bonnie Lee, Magic Slim, Otis Rush, Billy Branch, Bob Carter, Kenny Smith, Sharon Lewis, Tom Holland, Little Ed & The Blues Imperials, Bill Hickey, Little Arther, Vanessa Davis, and Jo Jo & the Blues Train to name a few.

In between gigs, I worked in repair shops and Music Stores, most notably, John Shaw’s “The Music Store” for 10 years, developed the Sweet Amplification line of hand wired all tube amps, and in 2011, I became the in house amp tech/Amp Works department of Chicago Fret Works which also became the new home for Sweet Amplification. I am grateful for the experience and support I received from owners Steve Baker and Dan Wolf. They trusted me to handle all amp related matters, built out a great space for the Amp Works part of the shop,  provided a very relaxed and comfortable work environment, and introduced me to many new friends and clients including local/national indy band Wilco, Jeffy Tweedy, and the team from “the loft” which lead to building a custom amp for Pat Sansone dubbed the “Sansonic” which has been on several tours with both Wilco and The Autumn Defense since 2013.

It is with much appreciation and some apprehension that I have decided to move on to greener/warmer pastures. Chicago is a top notch city but the long, cold, and dark winter doesn’t agree with my aging bones, arthritis, and mental health. After getting vaxed and taking a few brief scouting trips, I have decided to make a new start in sunny Tucson AZ. I know it’s not a music mecca like Nashville, Austin, or Nola, but it’s absolutely beautiful, peaceful, and has it’s own unique music, artistic, and cultural scene that I’m looking forward to exploring.

I’ll most likely be opening my own shop in early 2022 and will be excepting new orders and even shipped repairs.  Stay tuned and thanks for your interest and support!

Cheers! – Pat McKeever

Posted in Uncategorized | Tagged , , , , , , , , , | Comments Off

PreBS T5 Tweed

A newly completed custom ordered PreBS T5 with a traditional lacquered tweed covering and oxblood grillcloth! Other standard features include a WGS 8″ speaker, 3-position gain switch, rear panel shielding, and 1/4″ speaker jack for easy connection to an extension cab make this one of the best 5F1 builds available!


Posted in Uncategorized | Comments Off

PreBS 15 Rough Blonde w/ Oxblood

Just finished a custom ordered PreBS 15.  Mojotone/Heybor trannies, Deluxe Reverb OT, choke filtering, and Eminence GA-SC64 12″ speaker.  I’ll just let the owners words do the descriptions…

“I ran all of my guitars through it – Telecaster, Riviera, ES-175.  They all KILL through your amp.  At any volume level.  Tone, dynamics, and nearly silent at idle.  Notes just sing and sustain.  Very little in the way of dialing in tone.  Set it and forget it. Clear without icepick.  Warm, textured, dynamic.  Yeah, it kills.  The speaker kills.  In the short time I’ve had it, I’ve already played things that I’ve not played before.  That says it all.” -RY

Posted in Uncategorized | Comments Off

PreBS 15+ Carolina Blue

A custom order PreBS 15+ with Carolina blue tolex and cane grillcloth. As always with the + models you can swap 6V6 for 6L6  power tubes for more power and headroom with the upgraded Mercury Magnetics trannies. I definitely prefer 6L6s, especially in a band situation and the GA-SC64 Eminence speaker is the icing on the cake! Simultaneously warm and clear with a distinctive vintage character at low to moderate volumes and glorious with rich harmonics and growl when pushed hard! The push-pull mid boost takes it into early Marshall territory with singing ringing feedback when cranked. Think early Angus Young and how he would let the note ring until it just started to feedback on a single note instead of noodling and shredding a million more notes.  From country to R&B, blues, surf, and classic rock, it’s in there. A Sweet tone machine!


Posted in Uncategorized | Tagged , , , , , , , , , , , , , , , , | Comments Off

PreBS T5 Skulls and more Skulls!

Two new PreBS T5 builds completed! Identical electronically except for transformers and speakers. The candy skull T5 has Mercury Magnetics trannies and the output tranny is a tweed ’53 Princeton spec which is slightly oversized and has a noticeable effect on output(one extra watt) and tone(killer). The paisley ghost skull T5 has standard Mojotone/Heybor trannies and both amps have blackface spec power transformers for slightly higher plate voltage, slightly less sag, and a noticeably tighter crunch when cranked! Also, both have the Sweet exclusive 3-way rotary gain switch for a more versatile Champ type build. Vintage and beyond!

Candy Skulls T5 — Sold!     Paisley Skull Ghosts — $865

Posted in Uncategorized | Comments Off

PreBS-T5 Black Ghost Paisley

Another custom Sweet build just completed. This 5F1 champ build features Mercury Magnetics transformers, custom velvet grill cloth by artist Jeremiah Witting-Akiona, and of course my exclusive 3-way gain switch for more tonal variety. You’ll get the classic crunch and sag of a 50′s tweed Champ plus a cleaner/smoother setting(great for bouncy neck pickup tones) and an “over the top” setting for even more distortion and sustain. Vintage and beyond!


Posted in Handbuilt Amps | Tagged , , , , , , , , , , , | Comments Off

PreBS T5 Alligator

Another classic Alligator PreBS T5 with Cane grillcloth. One of my favorite color combinations! This one was ordered with standard 8″ WGS speaker for a traditional tone and has our unique 3-position gain switch for some variations on the classic tone. Vintage and more! Watch for a new PreBS T5 build coming soon. Not yet spoken for!


Posted in Handbuilt Amps | Tagged , , , , , , , , , , | Comments Off

JTM 45 Build Purple Head and Cab

This one off/prototype build request was for an offset Marshall JTM 45 style head and 2×12 half stack with a Marshall/blackface Fender hybrid circuit with master volume. The 4 jack  normal/bright inputs was kept but adjusted for less extremes. The Sweetened version has two very usable channels independently or when blended via a jumper cable between inputs. Other customizations include a blackface style phase inverter circuit and full range  negative feedback control instead of the traditional high frequency presence control as well as custom tone stack values for a more full range of adjustment rather than the focused midrangey voice of the original JTM circuit. A PPIV master volume completes the package giving the ability to adjust the gain from clean to crunch and beyond from bedroom to stage volumes. This sexy beast excels equally as a straight in tone machine or modern pedal platform! The control panel is labelled TLA 45 for the owners initials but it is affectionately known as “Grimace”.

This build turned out so good that it will be added to the Sweet product line! Any color is available but I think purple is definitely the coolest!

Posted in Handbuilt Amps, Uncategorized | Tagged , , , , , , , , , , , | Comments Off

PreBS 15+ Natural Cherry

This latest build kept me busy while the Corona pandemic kept the Fret Works/Amp Works  shop closed. It is possibly the best sounding PreBS 15+ to date and is the first to feature a natural had rubbed finished cherry cab. It also has all of the options including Mercury Magnetics trannies for 6V6 or 6L6 power tubes(15-32W), push-pull bright and mid-boost pots, negative feedback pot, and easy access bias pot and test points on the rear panel. All of this handwired sweetness is pushed into a Mojotone BV-30H 12″ speaker for some legit British crunch when cranked! This amp will cover Americana, classic rock, blues, country, soul, surf, and more. Seriously, this amp rocks!

$1895 —SOLD!

Posted in Uncategorized | Comments Off