Carl's Custom Amps Tweed Stage Pro 40W to 1/10W Twin/Bassman Style with London Power Scaling

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Carl's Custom Amps
Las Cruces, NM, United States
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About This Listing

Carl's Custom Amps
Tweed Stage Pro 40W 

For the foreseeable future build times will be between 8 to 14 weeks. We are experiencing very high demand. Each amp is built one at a time with great care so no rushing is possible. Thank you to everyone who has purchased for your business and patience!


The Tweed Stage Pro Series amps are based on the late 50's Fender High Power Tweed Twin and the Bassman. These amp were simply some best amps ever made and became the models that Marshall evolved into their JTM and Plexi amps. They are loud and clear with exceptional harmonics and crunchy growling overdrive. These high powered Tweeds became favorites of countless rock, blues, and country players. Kieth Richards, Joe Bonamassa, Buddy Guy, Billy Gibbons, Merle Haggard, Rory Gallager, so many others have used these types of amp to great effect.

Unfortunately they are too loud for the most venues when cranked up! They definitely too loud for practice. That is were the Tweed Stage Pro comes in. It is fitted with London Power Scaling so the wattage is adjustable from full power down a mere 1/10w. They can be played in any any situation and still have that great turned up loud sound!

The Tweed Stage Pro is available in three configurations: 20W, 40W with two output tubes, or 40W+ with four output tubes. This listing is for the 40W version. 

Flexible Tone:

The amps have two channels: hot and vintage. The hot channel add just little more sizzle to the sound and the vintage channel has the sound of dead stock Tweed. Each channel has bright and fat switch allow for wide pallet of tones and textures. Adding to the versatility is our SAG control that allows you get rectifier compression/sag at any volume!

The Tweed Stage Pro Series is tube swapping capable. Any common power tube (6L6GC, 5881, El-34, 6550, KT66, 6V6, KT77, 6CA7 etc) can be used in pairs or mixed pairs. You can tailor the amp for your own signature tone! The 40W abd 20W versions use a pair of output tubes like a Bassman and the 40w+ Version uses a quad. Comes with a pair of 6L6GCs.

These amp are sold as heads only and can be paired with our 2x12, 4x10, or 1x12 ext. cabs.

London Power Scaling:

The Tweed Stage Pro Series features Power Scaling which solves the volume issue. Power scaling allows the player to dial in anything from full power down to 1/10W. So these amps are capable of playing anything from a bedroom to a club to a stadium.  Many amps have  "wattage" and "power" controls that sound unnatural.  London Power Scaling is different from most of these and very transparent.  Plus in any setting below full power it extends the life of the power tubes.  


All tube,  Hot and Vintage volume controls, bright and fat switch for each channel,  treble, mids, bass, and presence, SAG, power and limit controls,  ON/OFF Switch,  hand wired for great sound and reliability with a method that shortens the signal path, super quiet grounding for low noise, special resistor selection for low noise and great tone, adjustable fixed bias with external bias pots and test points, 40+ Watt model is fan cooled.

The heads are all have 8 ohm speaker outs. If you need 4,8,16 ohm selectable outs that can be added.

Parts: High quality parts throughout: Malory 150 and Panasonic Tone Caps, Panasonic/Nichicon Ultra Long Life Filter caps, Switchcraft or Neutrik jacks, Carling switches, aluminum chassis, 12 ft power cord JJ's Tubes, custom wound M6 line grain laminated US made output transformer.

Ext. Cabs:

I offer a 2x12, 1x12, and 4x10 extension cab for the these amps. They are tweed style with the traditional finger joined pine construction. I offer both American Voiced cabs with 50’s style Alinco speaker and cabs with more modern British voice speakers like Joe Bonamassa and Kieth Richard’s use in their amps. The British speakers are brasher and meaner sounding while the American speakers have more sparkle and are smoother and warmer.

What Customer are Saying about the Tweed Stage Pro:

“Hi Carl,

Hope all is well. I got the amp and cover on Friday. Thanks for such a speedy build time!

Wow... first of all, what a beautiful looking amplifier! Seeing it in the flesh just bowled me over. It oozes quality. The size of it makes quite the statement too.

Over the weekend I literally played through it for hours with both my Strat and Les Paul (I'll get to some of the others later). Your notes on dialing in the Power and Limit controls were invaluable. Power Scaling is easily the best solution to the volume issue that I've tried. Not sure how you've done this but boy does it work! The interaction w/ the power section, each channel's volume setting and then the tone controls... the possibilities seem endless. Only last night did I get around to jumping both channels. To me, THAT's where the magic happens in this amp. Dig in with the pick, more crunch... back off, cleans right up. Ditto with volume pot roll-off at the guitar
I've yet to plug in any pedals at all. I'm running into your Tube Reverb then into the amp. Quiet as a church mouse! I'll get around to pulling two of the tubes but for now I'm in tone heaven just scratching the surface of possibilities as is. Having SO much fun with this incredible instrument!

So far, I've used it two different 2 x 12" cabinets. The one pictured (which was a Hammond B3 in a former life... ;) is loaded w/ Warehouse speakers. Crisp and direct. My Bogner 1/2" pine cabinet with one Gold and one Greenback sounded livelier, resonant and very 3 dimensional even in my small studio. I'm going to experiment more with other cabs today.

How lucky that reading some random review of the new Fender Bassman reissue led me to your site. Cancelling that reissue amp order and ordering your amp and reverb unit was one of the best gear decisions I've made... and I've owned (and then sold) a lot of amps. This one's an absolute keeper!

Up next I'll be adding a British Vintage 7 asap. (I might need one of your matching tweed 2 x 10" cabinets to complete this set first though... dang you Carl!!)

Thank you so much Carl! It's perfect.

Thoroughly impressed in Creede,

Courtney "

“What an amp! I was expecting a great high power tweed twin, but what I got was every narrow panel tweed Leo made. The only difference is the low end stays firm so no farting out. It also can play at whisper level and the sustain is still there. I greatly prefer the power scaling over any master volume type amp I’ve used or any dynamic reducing attenuator.

It also works as a perfect pedal platform or add reverb and tremolo it becomes a surf amp. Or, get harmonically rich overdrive at any volume by jumping the channels to give a bigger push with my vintage single coils. It also takes my boosters really well which I wasn’t expecting and it takes things to a new level and hits the sounds I love best.

My tweed needs are definitely covered with this amp! Now I just need a couple new cabs so I can run 4x10” and/or a 2x12 with speakers that better compliment the amp than the Golds I’m using now. “

Scott K-

Reviews of this Shop


Product Specs

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Made In
  • United States

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