daddymack

I don't have the specs in front of me, but the difference will be in power handling, and in certain cases the depth and quality of 'sag'. The 5V4 B+ is higher, which makes the amp louder and offers more headroom.

I suggest you play the crap out of that amp and experiment with the existing configuration, and see if you are just not familiar enough with it yet. I found all sorts of stuff out about my Blackstar that was not accurately described in the OEM literature. If you have a Variac, you could pop a 12A[?]7 in that socket and bring the power up slowly to see if the tube even glows [I doubt it, but without knowing what wires on what pins go where?]. I still think he may have pre-wired a lot of 'generic chassis', and built some with whatever tube 7 was intended for, and the rest without. I doubt it is a phase inverter; is the amp Class A, or Class A/B..? Thinking way back to that era [maybe 2006/2007/2008?] I vaguely recall something about the mid control being 'interactive'....with what, I don't know. Do you know what year the amp was built? Maybe by the pot codes? All in all, you bought it from the builder, he says it works as intended, you got no manual, no schematic, and ...any warranty?

without a schematic I can't definitively answer any of that. I have only seen/heard an RC Davis at NAMM, over a decade ago [maybe more], where they frown on looking under the hood. The fact that you can't get a straight answer out of Davis should tell you something. He is a limited output boutique builder....but why can't he explain his circuit design to you? I'm guessing you already contacted him at the website [info@rcdavisamps.com] Try asking these guys: https://www.proavresource.com/store They are an 'authorized dealer' for RC Davis amps. They may have better insight.

Thazwudime-tawkenbout!

you want us to guess about the design, from that picture,without knowing wtf the amp is? ...but the builder already claimed they didn't know? That's a bias trim pot adjacent to the 2 power tubes? would be the logical place...what is it wired to? There's that lone 9pin tube socket that, according to builder, was not being used , especially "if there was no 7th tube included",,,,, leave it empty. The builder already explained it. what would or should be another AX7?? could be for a tremolo/vibrato circuit not installed in your version

guitar 'add-on' synth modules. To me, a guitar is a guitar, not a pipe organ or a horn section

#!: The 'EPK'...electronic press kit. This should have a performance video, resume, and contact info [A website is better than a FB page]. Athumbdrive with your EPK is common now. #2: Go to google and search talent booking agencies in [your home town, or target area]. Look up local craft/micro breweries, places like that which can afford a solo act and want one that is 'unobtrusive'. Check the listings for the local music scene and see where solo acts are getting work.

That amp could possibly power a 4x12, but you would need to match the impedance, which I doubt that amp is designed to accomplish. IIRC, the amp's output is 8 ohm, most 4x12 cabs are 16 ohm. I suggest also that you do not really need 4x12 cabs, 2x12 would be plenty, and easier to transport. You might find those in 8 ohm much more readily than 4x12s. Your 20w solid state practice amp isn't going to convert to a stage amp just because you added more speakers. Without knowing the style [I would guess by your moniker it is punk, but...], I will simply suggest that you need a much more powerful amp, especially playing live with a drummer [assuming you have a drummer]. Sell the Mustang amp, and upgrade to something designed for live stage use. As to the yellow wire, it may just be a chassis ground from the speaker frame...why, I don't know, but that is the only thing I could guess. Where does the yellow wire go from the speaker?

IMHO, rental cars would not be my go-to. The per diem plus mileage likely kills any potential benefit as far as reliability. I suppose the cost is deductible as a business expense, but the tradeoff against your net income is likely not worth it. Truck stops usually have showers.

We do have a experienced cruise line performer here, let me see if I can get him to swing by... I would think you should find out who books the talent for the cruise lines, and where they go....flamenco won't be a big sell on an Alaska or West Indies cruise, but the Panama Canal, or Playa Azul/Mexico routes could be a good fit.

Directories are okay, although, after the Covid pandemic, so many venues closed, many of them are not up to date. I would suggest, for someone like you, with a niche act, that getting a booking agent would be a more productive route. The odds of finding even small room work would be challenging, but restaurant, winery or private parties might be a better route at least getting started.

The 4EB2C1B. I had a Vaporizer for a few months when I was hosting jams around 2014. A strange amp with limited useful sounds... maybe the strangest of that 'weird amp that should not exist' [aka the Pawn Shop Series] phase they were into into the early 2010s [including the Excelsior and the Rampart, oh, and that little POS, the Greta] The Excelsior at 13W to a 15", and the Rampart [9w/1x12"] were nice mod platforms, and the uber-cool retro looking Vaporizer at 12w/ 2x10" were slightly under-powered for gigging with a drummer. You could do it, but there was no headroom left. And once you hit the 'vaporizer switch', there was no volume control except from your guitar, which was a nice challenge. I wish I had kept it for the speakers and cabinet, and could have fudged another head in it. I had the mint-y green one.

we need pics!!!

You say the amp's maker said they work? So ask the amp maker wtf they are. There are dozens of equivalent tubes for 6V6, some direct substitutes [eg. 7408, VT-107. plus many 'militarized/ruggedized' variations] by many manufacturers in many countries over the decades [they were first introduced in the mid 1930s]. Many are not exact, but may tolerate higher temperatures and/or plate voltages. Since the ones you showed are unmarked, it would be difficult [read: time consuming] to spec out the size of the glass on all the variants from all the manufacturers. If they work, and they fit, what's the problem? Since you already don't know the mfr, you may never find them again.

My thought exactly. Maple can be very unforgiving.

non-Gibson Les Pauls? I know you mean guitars designed to look like a Les Paul, but not a Gibson [including 'Orvilles and Maestros] or an Epiphone; but by any other manufacturer, it can't be a 'Les Paul'. One of the best 'copies' I have worked on was a Navigator, built by ESP/LTD...great instruments, hard to find, like a Tokai Love Rock [I have never even seen one!]. ESP makes a good variety of LP-style guitars, too. PRS single cuts are great too. But being unfamiliar with the UK marketplace, I hesitate to throw out names that may not be available there. I'd guess Thomann carries plenty of LP-style instruments, and I did suggest a trip to Anderton's [no relation to our former leader] an emporium known to carry Gibson LPs in the UK...

did you check any of the links posted in this thread? I'm guessing not. here,try these: https://www.connguitars.org/ https://jedistar.com/conn/ as to value, check reverb.com and eBay

you're welcome!

with black binding...in the mid 1970s... nope...didn't help....

umm...are you kidding? a pic or three of yours might help, but: https://reverb.com/item/46816831-fernandes-the-revival-57-stratocaster-1957-reissue-mij-electric-guitar-tobacco-burst-1980s https://reverb.com/item/43611065-fernandes-the-revival-stratocaster-57-reissue-electric-guitar-mij-black?bk=

the journey is just as important as the outcome.

" this guy "?

most of them sounded like crap...cheap p-ups and junk pots, wacky necks [the Eko 'nose dive' was notorious]...but you got to look like Paul....

Tubes fell out of favor as solid state took over in radio, television, test equipment, radar, etc. So there were plenty of unused/unsold tubes languishing on shelves.for decades, and there likely still are. That said, from e-Bay? Trust, but verify. the EF86 is a pentode, and does have a very different tone than a 12A[]7, but the EF86 is more prone to microphonics, and how it sounds depends largely on the circuit design [the Dr. Z Rte 66 is a perfect example].

I am actually somewhat familiar with many iterations, [as I would think Isaac42 would be as well] but, unfortunately, there were so many violin bodied basses in the late 60sup tothe early 1980s [I owned two, one an Eko, and another Japanese no-name] and beyond that definitively nailing this down from a fuzzy pic is nearly impossible. It is also possible that that headstock on the bass was refinished white to match the bass. But the head stock does not match Hofner of the era or the Eko: note the big 'scroll' block, and the offset tuners and, although closer to the shape, not the Epiphone version either: so my best guess is a Japanese no-name , although it also does not match with any Matsumoko version I am familiar with, like Univox which was very close to the Hofner's. Not even close to the Vox paddle headstock on their violin... and not a Teisco [Kawai] either [again, more Hofner-y] and not Ibanez [Hofner-y again] There is another headstock a rare 'paddle 3-1' [circa 1967] on the solid body version So good luck...if you get an answer, please enlighten us!