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Late one night in the shop they decided to take the STR and take it up a notch by giving it more of a tweed. You can say its ST-6V6se. Their aim was to put a juiced circuit in a larger Space tone-esque cab, blown up in living color with top mounted controls, all with crazy good breakup/tone along with the ST-6V6se harmonic complexity that we all crave and love. Their goal was to make the most FUN AMP TO PLAY...as in EVER. Why mess around?
They still wanted the cleans option, or at least some semblance of control when needed, just to give it a bit of flexibility. And of course, it had to be a bone simple circuit, tone cut sans bass/treble/mid controls, something that let all the guitar through while also having a character of its own.
This is essentially the Space Tone Reverb, a ciruit based on the little 5W, Class A, single-ended 6V6'R that started it all, but with new found bottom, and just amazing breakup. Of course it has the same king hell reverb. In addition, the STR-Tweed has a switch that brings in more cleans, taming the breakup a bit when you want to tone it down.
It really is a lot like that little ST-6V6 single-ended beast, but with that big 12" speaker, bigger cabinet vibe riding along with some Swart magic. This cabinet is actually wider and deeper than the AST, only losing a bit in the height department.
Compared to the STR, it's a bit warmer and bit hotter. This is not a subdued amp at all, sounding far bigger than you would think any 5 watts could do. And there is something magical about pure Class A single-ended, 6V6 watts, too.
The point to point, hand-wired STR-Tweed has three driver/preamp tubes comprised of two 12AX7s and one 12DW7 with a parallel Reverb stage utilizing the 12DW7 & 12AX7, providing the circuit with virtually zero insertion loss. And like all Swart amplifiers, the STR-Tweed is tube rectified by the JJ 5AR4/GZ34 for the best AC filtering bringing great compression and tone, avoiding the typical solid state harshness that seems to ride along with solid state rectification. Try a vintage 5Y3 for a bit more SAG and less voltage on the power tubes.
And like ALL Swart amps, STR-Tweed utilizes the Swart philosophy of minimal controls for the least complexity, something SWART feel is instrumental in great tone. Wonder why they go with a simple "treble" cut in the circuit? There's the answer. You won't see a plethora of controls in the Space Tone series because they've found it compromises their #1 goal: The best tone out there.