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Jackson Ampworks Britain 30 Amp Head - Vox Fawn & Ivory  From Jackson Ampworks

From the 30w EL-84 Power Mode of Jackson's Britain 4.0 amplifier - the Britain 30. 

Jackson Ampworks

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What We Think

The Jackson Ampworks Britain 30 is yet another gem from their line, and there's no surprise over here at SoundPure after our previous experiences with Jackson. The heart of this amp is essentially the 30 watt EL84-power mode of Jackson's revered Britain 4.0 amplifier. While the Britain 4.0 had the capabilities to sculpt and tailor your tone in almost all aspects, not everybody relishes upon those options - so this was made with the straight forward player in mind. The amp is a loud 30 watts and is perfectly complimented by their ported cabs. The EL84's have a particular sparkle and snap to them that really sounds spectacular when driven. The power scaling option enables you to nail those overdriven or sparkling clean tones at any volume necessary - something most amps are not capable of. The master tone knob is really icing on the cake, being able to get that slightest tweak on the end result to make sure your sound is all your own and exactly what you had in mind. Straightforward, great sounding, and expertly made - there's no reason why the Britain 30 shouldn't at least spark your interest.

Manufacturer's Description from Jackson Ampworks


The Britain 30™ is the latest incarnation of our highly successful 'Britain' series of amps. Designed to augment the Britain series of amps with features that players have been requesting for years, the Britain 30 takes the incredible platform created by the Britain 4.0 and streamlines it by featuring the most popular 30W EL84 Power Mode and simultaneously expands it with the addition of Power Scaling and a Master Tone control!

Introducing the Britain 30

The Britain 30 was designed for players who want the same tone found in the Britain 4.0 but do not need all of the switchable power modes it contains. While these power modes serve to make the Britain 4.0 a very flexible amplifier, frankly not every player needs these features or plays in an environment where they can take full advantage of them. It is with this in mind that we have chosen to use the Britain 4.0′s very popular 30W Class A Power Mode as the foundation for the Britain 30′s tone.

Designed not as a replacement for the Britain 4.0 but as an extension of the Britain series of amplifiers, the Britain 30 contains many features that people have requested for years in the Britain 4.0; features which were frankly impossible to implement given the size and complexity of the Britain 4.0 amplifier.

In addition to streamlining the power modes, the Britain 30 expands upon the Britain 4.0 by offering Power Scaling; a feature that we have had numerous requests for. With Power Scaling, the player is able to adjust the Power control and vary the output of the amplifier from 30W down to 1/8W and obtain true power amplifier overdrive at any volume level! We have also included a Power Scaling Bypass Switch that will allow the player to fully bypass the Power Scaling circuit and enjoy the same dynamic response as the Britain 4.0 when Power Scaling is not required.

Finally to make the Britain 30 as affordable as possible, we have priced the Britain 30 at $1,995, a full $900 less than the Britain 4.0!

Blend-able Preamps.

The Britain 30 features two totally separate channels, each with its own set of dedicated tone controls. While two channel amps have been available for any years, the magic of the Britain 30 lies in its ability to blend those two channels together to create an infinite number of tonal options!

Channel 1 is the exact same EF86 based preamp that is found in the Britain 4.0 and features our own footswitch-able boost circuit that true bypasses the Treble and Bass controls resulting in a substantial boost in volume, gain and tonal purity. Channel 1, being the higher gain of the two, is considered the dirty channel of the amp and offers a very broad frequency response that works to deliver your instruments true voice with minimal coloring or artifacts.

Channel 2 of the Britain 30 is a 12AX7 based “Top-Boost” preamp that balances perfectly against Channel 1 by providing pristine clean tones with incredible headroom and articulation. This channel, which was designed to remain clean longer than Channel 1, embodies the very definition of clean British guitar tone but is enhanced with increased richness and depth.

Channels 1 and 2 are internally linked so that the use of the input labeled “1/2” sends the guitars signal to both channels equally. In this arrangement, each channel is active along with its associated tone controls and blending of the two channels is as simple as adjusting the Volume control for each channel. The true advantage of this type of arrangement lies in the ability to blend Channels 1 and 2 together while still allowing tonal shaping of each channel via their respective Treble and Bass controls.

Plugging into the input labeled “2” breaks the internal connection to Channels 1 and 2 thereby allowing them to function independently. This feature allows the player to use a completely different signal chain (floor based effects etc.) for each channel if desired, and is fully expanded by the use of an ABY box to select channels 1, 2 or both.

Streamlined FX Integration.

To make the Britain 30 even more flexible, we have incorporated a series FX loop for each channel. Much the same way using two inputs gives maximum flexibility, having a dedicated FX loop for each channel allows the player an unprecedented amount of control. As an example, with this configuration, the musician could insert a reverb or delay unit in the Channel 2 FX loop to expand his clean tones while at the same time leave Channel 1 dry to optimize his/her overdriven sound for greater punch and clarity. The same goes for each channel. With this setup you can add effects to either channel, both channels or neither channel. You have complete control.

The Britain 30 features dedicated SEND and RETURN jacks for each channel so you no longer have to use an Insert Cable in order to use the FX loops as is the case with the Britain 4.0.

Master Tone.

To make the Britain 30 more flexible we have included a Master Tone control that allows the player to have fine control over the high-end response of the amplifier that is completely independent of the two channels’ Treble and Bass controls, even when the Boost mode of Channel 1 is used! Having this control is also very effective at tailoring the overall tone of the amp when playing in various acoustic environments without having to re-EQ the two channels.

Power Scaling.

In addition to the Master Tone control the Britain 30 features a Power control that adjusts the Power Scaling in the amp. The Power Scaling in the Britain 30 allows the user to adjust the high voltage being fed to the power tubes from 350V+ down to 35V which consequently lowers the output power of the amp from 30W down to 1/8W. This control is one of the most important features of the amp as it allows the player to adjust the output volume of the amp to suit any size stage environment as well as get true output tube overdrive at any volume level!

For occasions when the player does not need to Power Scale the amplifier a Power Scaling bypass switch has been included that allows the player to completely bypass the Power Scaling feature and return the Britain 30 to the stock performance found in the Britain 4.0.

WARNING: Never flip the Power Scaling Bypass Switch to the OFF position unless the Power control is in the full clockwise position. Doing so will cause undue stress on the amplifier and switch as the amplifier attempts to rapidly rebias itself.

Bulletproof Construction.

Since Jackson Ampworks began in 2003, we have established ourselves as a premier manufacturer of the highest quality amplifiers available and we are proud to say that with the launch of the Britain 30, the quality of construction methods used in our amplifiers have only improved. Quality to us is more than just a bragging right, it is a critical component in every amp that we build. This commitment to quality is such a cornerstone of our business that each amplifier that we build undergoes a 3 day torture test to make sure that by the time it gets to the player, we have done everything we can do to make it fail so that it will never fail when it gets to you.

Perfectly Priced.

With a retail price of $1,995.00 USD, the Britain 30 is hands down one of the best built, most versatile and cost effective amplifiers anywhere. And while you can certainly find many amps in this price range, you can rest assured that none of them offer the flexibility that the Britain 30 offers. Consider that when using the Britain 30 you have at your deposal all of the classic tones found in the the most popular British style amps of the last 50 years plus all of the new tones available with the boost feature and the blending of the two channels!

All of the features listed here work to make the Britain 30 one of the most revolutionary amplifiers on the market. With features like small size, tonal flexibility, power scaling, bulletproof construction and great value, the Britain 30 is poised to redefine the boutique amplifier market yet again.

Jackson Ampworks

About Manufacturer

Jackson Ampworks is a small boutique amplifier shop located just north of Fort Worth, TX. Our daily focus is to deliver the best sounding, most reliable and musical sounding instruments possible that inspire the player to greater heights in his/her craft. We are very blessed to have been growing continually since we began full time operations just over 3 years ago. This growth, during one of the worst economic climates in US history, is largely due to our loyal customers and dealers without whom we would not be in operation today. 

Sound Pure is excited to bring Brad Jackson and the wonderful people at Jackson Ampworks to our inventory and we think you'll drool once you hear some of these rigs!  


Output Power: 30W – 1/8W Class A, (4) – EL84, Cathode Bias
  • Preamp: Channel 1 - 1x EF86
  • Preamp: Channel 2 - 2x 12AX7
  • Phase Inverter - 1x 12AX7
  • Output - 4x – EL84
Rectifier - Solid State
Input Impedance
  • Channel 1 - 1MΩ
  • Channel 2 - 1MΩ
FX Loop Impedance
  • Channel 1 Send: 1MΩ
  • Channel 1 Return: 1MΩ
  • Channel 2 Send: 1MΩ
  • Channel 2 Return: 1MΩ
FX Loop Wiring
  • Channel 1: Mono Plug, Independent Send/Return Jacks
  • Channel 2: Mono Plug, Independent Send/Return Jacks
Line Voltage: 120VAC or 240VAC, Switchable via Back Panel