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Jackson Ampworks Britain 4.0 Head

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Product Description

*Please note that most amp orders come factory direct and hand built one at a time. Therefore the usual wait time is 3-6 weeks depending on manufacturer availability and options.

Jackson Ampworks, the creator of “The Britain” amplifier, has just released The Britain 4.0.   With careful consideration of the feedback from users of the original Britain and the Britain 2.0, Jackson Ampworks has totally redesigned the amp to become the most pristine, versatile, and compact boutique amp on the market today. The new Britain 4.0 is 18 pounds lighter than its original predecessor, 8” more narrow and 3 times more powerful!  In addition to these changes we added a second channel to the amplifier, a unique footswitch-able boost circuit for the Britain’s now legendary EF86 channel, series effects loops for each channel, and selectable 15/25/30W Class A or 50W Class A/B operation that features 2 different sets of output tubes for unmatched versatility!


Given the combination of features, performance and price, we think you’ll agree that not only does the Britain 4.0 offer Small Size and Huge Tone, it also offers a Tremendous Value as well!

Channel 1: EF86 Preamp with Volume Treble and Bass Controls. 15/30W Class A, 25W Class A and 50W Class A/B Rotary Switch on back panel.
Channel 2: 12AX7 Preamp with Volume Treble and Bass Controls. Power and Standby Switches on back panel.
EL84 Power Tubes provide 15/30W of Power in Class A modes. EL34 Power Tubes provide 25W of Power in Class A mode and 50W of Power in Class A/B mode. External Locking Bias Trimmer and Test Points on back panel.
Boost Footswitch for Channel 1 that disables the Treble and Bass controls and provides gain and volume boost and front panel LED indication. Power Entry Module that allows switchable 120/240VAC operation.
Series FX Loop for Channel 1 and Channel 2. Mains and B+ Fuses on back panel.
8-16 Ohm Speaker Impedance Selector Switch Dual Speaker Jacks on back panel.

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