Mesa/Boogie California Tweed 6V6 4:40 Guitar Combo Amplifier (40 Watts, 1x12")
zZounds Gear Experts Say...
Explore the vintage side of Boogie with this California Tweed combo. A single 12" Jensen Alnico speaker complements the sugary sweet sound of the amplifier.
Overview
Fifty years in the making, the California Tweed 6V6 4:40 is Mesa/Boogie's single channel, "old school" offering aimed at all sounds Americana. Equipped with all the essential features you do need, none of the complexity you don't, and bona fide delicious 6V6 Tone in every viable wattage you could want. Experience an addictive, inspiring feel guaranteed to keep your hands on the strings, your ears wide open and your eye on the prize.
Check out our demo of the Mesa/Boogie California Tweed at the Gibson Garage:
A quick glance at the front panel of the California Tweed reveals single channel simplicity. Channel features include Normal & Low Inputs, Gain, Treble, Mid, Bass, Presence, Reverb & Master Controls. Boogie's legendary vintage all-tube, long-tank, spring reverb with external reverb switching jack and a fully buffered, tube-driven series FX loop round out a feature set that delivers everything you need for golden tone, and absolutely nothing more.
After testing numerous options, searching for a speaker capable of delivering the magical vintage tone they were after for the California Tweed, Mesa/Boogie chose the Jensen BLACKBIRD ALNICO. The resulting combination delivers a tonal character that is absolutely perfect.
40 Watts - 4x6V6 Class A/B Pentode
30 Watts - 2x6V6 Class A/B Triode + 2x6V6 Class A/B Pentode
20 Watts - 2x6V6 Class A/B Pentode
10 Watts - 2x6V6 Class A/B Triode
2 Watts - 1x6V6 Triode + 1x6V6 Pentode, Single-Ended Class A Parallel
Harken back, bounce on forward, while never sacrificing one drop of golden California tone.
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Check out our demo of the Mesa/Boogie California Tweed at the Gibson Garage:
A quick glance at the front panel of the California Tweed reveals single channel simplicity. Channel features include Normal & Low Inputs, Gain, Treble, Mid, Bass, Presence, Reverb & Master Controls. Boogie's legendary vintage all-tube, long-tank, spring reverb with external reverb switching jack and a fully buffered, tube-driven series FX loop round out a feature set that delivers everything you need for golden tone, and absolutely nothing more.
After testing numerous options, searching for a speaker capable of delivering the magical vintage tone they were after for the California Tweed, Mesa/Boogie chose the Jensen BLACKBIRD ALNICO. The resulting combination delivers a tonal character that is absolutely perfect.
Single Channel, 5 Power Voices, One Simple Switch:
The California Tweed is powered by 4x6V6 Power Tubes while the preamp features 5x12AX7 and 1x12AT7 preamp tubes. Boogie's patented Incremental Multi-Watt Power Amp, featuring Duo-Class (Patent 7,173,488)… read more and Dyna-Watt technologies, provides five power levels, two operating-classes and three wiring options via a single 5-Way Rotary Switch! Choose from the following power options:40 Watts - 4x6V6 Class A/B Pentode
30 Watts - 2x6V6 Class A/B Triode + 2x6V6 Class A/B Pentode
20 Watts - 2x6V6 Class A/B Pentode
10 Watts - 2x6V6 Class A/B Triode
2 Watts - 1x6V6 Triode + 1x6V6 Pentode, Single-Ended Class A Parallel
Harken back, bounce on forward, while never sacrificing one drop of golden California tone.
Specs
- Amp Type: Tube
- Chassis Material: Aluminum
- Rectifier Type: Silicon Diodes
- Rectifier Tubes: n/a
- Variac Power Switch: n/a
- Preamp Tubes: 5x Mesa 12AX7 & 1x Mesa 12AT7
- Power Amp Tubes: 4x Mesa 6V6
- Bias Switch for Alternate Power Tubes Types: n/a
- Maintenance Free Fixed Bias: n/a
- Wattage(s) Quick Reference: 2, 10, 20, 30 or 40 Watts - See Power Amp Details for more information
- Built-In Power Amp Attenuation: n/a
- Power Amp Details (Class & Wattage): Mesa's Patented Incremental Multi-Watt (Patent 9,917,560) Power Amp, featuring Duo-Class (Patent 7,173,488) and Dyna-Watt technologies, provides five power, two operating-classes and three wiring configuration options via one 5-Way Power Switch
- Choose from the following power options:
40 Watt - 4x6V6 Class A/B Pentode
30 Watts - 2x6V6 Class A/B Triode + 2x6V6 Class A/B Pentode
20 Watts - 2x6V6 Class A/B Pentode
10 Watts - 2x6V6 Class A/B Triode
2 Watts - 1x6V6 Triode + 1x6V6 Pentode, Single-Ended Class A Parallel
More information on Dyna-Watt Power can be found in the Owners Manual, which is available in the Support Section of this website.
- Convection or Fan Cooling: Convection
- Number of Footswitchable Channels (or Modes): One Channel
- Number of Style Modes: Two (Inputs)
- Number of Style Modes Per Channel: Two (Inputs)
- Types of Style Modes Per Channel:
Single Channel with two Inputs:
Normal Input = Clean to Overdrive
Low Input = Clean
- Channel Controls: Gain, Treble, Mid, Bass, Presence, Reverb and Master
- Graphic EQ and/or Contour: n/a
- Reverb / Effects & Bypass Options: All-Tube, Spring Reverb
- Effects Loop & Bypass Options: Fully Buffered Series FX Loop
- Global Output Level Control: n/a
- Global Solo Level Control & Bypassable Options: n/a
- True-Bypass Options: n/a
- Tuner Output: n/a
- External Switching Jack Options and/or Midi: External Switching Jack for Reverb On/Off (Reverb Footswitch and Cable sold separately)
- Speaker Outputs: One 8 Ohm and Two 4 Ohm
- Speaker: 1 - 8 Ohm Jensen Blackbird ALNICO 40 / Total Load = 8 Ohms
- Cabinet Simulation - Direct Live/Recording Output: n/a
- Headphone Output: n/a
- Slave Output: n/a
- Chassis Material: Aluminum
- Rectifier Type: Silicon Diodes
- Rectifier Tubes: n/a
- Variac Power Switch: n/a
- Preamp Tubes: 5x Mesa 12AX7 & 1x Mesa 12AT7
- Power Amp Tubes: 4x Mesa 6V6
- Bias Switch for Alternate Power Tubes Types: n/a
- Maintenance Free Fixed Bias: n/a
- Wattage(s) Quick Reference: 2, 10, 20, 30 or 40 Watts - See Power Amp Details for more information
- Built-In Power Amp Attenuation: n/a
- Power Amp Details (Class & Wattage): Mesa's Patented Incremental Multi-Watt (Patent 9,917,560) Power Amp, featuring Duo-Class (Patent 7,173,488) and Dyna-Watt technologies, provides five power, two operating-classes and three wiring configuration options via one 5-Way Power Switch
- Choose from the following power options:
40 Watt - 4x6V6 Class A/B Pentode
30 Watts - 2x6V6 Class A/B Triode + 2x6V6 Class A/B Pentode
20 Watts - 2x6V6 Class A/B Pentode
10 Watts - 2x6V6 Class A/B Triode
2 Watts - 1x6V6 Triode + 1x6V6 Pentode, Single-Ended Class A Parallel
More information on Dyna-Watt Power can be found in the Owners Manual, which is available in the Support Section of this website.
- Convection or Fan Cooling: Convection
- Number of Footswitchable Channels (or Modes): One Channel
- Number of Style Modes: Two (Inputs)
- Number of Style Modes Per Channel: Two (Inputs)
- Types of Style Modes Per Channel:
Single Channel with two Inputs:
Normal Input = Clean to Overdrive
Low Input = Clean
- Channel Controls: Gain, Treble, Mid, Bass, Presence, Reverb and Master
- Graphic EQ and/or Contour: n/a
- Reverb / Effects & Bypass Options: All-Tube, Spring Reverb
- Effects Loop & Bypass Options: Fully Buffered Series FX Loop
- Global Output Level Control: n/a
- Global Solo Level Control & Bypassable Options: n/a
- True-Bypass Options: n/a
- Tuner Output: n/a
- External Switching Jack Options and/or Midi: External Switching Jack for Reverb On/Off (Reverb Footswitch and Cable sold separately)
- Speaker Outputs: One 8 Ohm and Two 4 Ohm
- Speaker: 1 - 8 Ohm Jensen Blackbird ALNICO 40 / Total Load = 8 Ohms
- Cabinet Simulation - Direct Live/Recording Output: n/a
- Headphone Output: n/a
- Slave Output: n/a
Dimensions and Weight in Packaging
Base Item
- Shipping Weight: 58 lbs
- Shipping Dimensions: 32 x 26 x 18 in
- Manufacturer Part Number (MPN): 1.TW.CCM.J
Documents and Manuals
For support or warranty questions, please contact the manufacturer:
Phone: 707-789-3348, 1-800-4GIBSON
Email: service@gibson.com
Web: https://www.mesaboogie.com/support/
Phone: 707-789-3348, 1-800-4GIBSON
Email: service@gibson.com
Web: https://www.mesaboogie.com/support/
Reviews
Reviewers gave this product an overall rating of 5 out of 5 stars.
(2 ratings)
Submitted November 9, 2025 by a customer from gmail.com
"From clean to mean and everything in-between. Fantastic amp"
Verified Customer
zZounds has verified that this reviewer made a purchase from us.
I've now owned the 4:40 1x12 for about 6 months after owning the 2:20 1x10 for well over a year. I switched because I now play in a few venues that don't mic amps and wanted more low end fullness. I'll get what I don't like out of the way first: When the reverb is past noon or so it feels like the mix between wet and dry signal is just too high as it gets really washed out and overwhelming. I wish the mix between dry and wet signal allowed for a longer reverb trail with more front end note clarity, kind of like pre-delay. It almost sounds closer to a very very large cathedral type reverb at higher levels. I suppose that may be a good thing for you depending on what you are looking for. With that being said anything before noon is fantastic for all manner of americana music. Subtle but bright at low levels, drippy just before noon. Other than there being too many fantastic tones and having to choose how I want to set the amp, I have zero complaints or gripes otherwise. What I love: The cleans and edge of break-up tones are to die for. Overdrive ranges anywhere from chimey, growly Bassman-esque tones to Rolling Stones "Can't you hear me knocking." The EQ stack is wildly versatile. Yes, it's a tweed amp and therefore has some mid push, but if you crank the master and back off the gain and mids you can get into blackpanel territory that works wonderfully for a pedal platform (if you're running it as a pedal platform backing off the mids is important since most of us use some type…
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of mid-forward pedal to cut through). The wattage options aren't just for volume and headroom purposes - some have a sharper attack with less compression, some have less attack and more compression. Just another way to dial in the tone you're looking for. The relationship between the master volume and gain provides endless tonal options. The master volume is also highly effective for getting cranked caving in tweed tones at apartment appropriate volumes. Has a great effects loop. Looks beautiful. I think this amp is simply fantastic. Between the EQ stack, high and low inputs, wattage options, and master volume you can pull all sorts of tweed and clean blackpanel-esque tones out of it. At 40 watts there's all sorts of headroom. You can dime it and play at night in an apartment without getting evicted. It has an effects loop for even more versatility (I run a Tone King Imperial Preamp through it) or wet effects if desired. It plays well with any guitar I've put through it and especially loves single coils and P90s. The preamp is highly responsive to input signal so playing dynamics, guitar volume changes, and a boost pedal can cover a wide range of tones. I gigged the small one for over a year and this one now for about 6 months and other than tube rattle I haven't had any issues. I do miss the weight of the small one tho. If you live in the americana music world I HIGHLY recommend you give this amp a look.
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