The Sushi Box FX Smoke Signal has arrived and I've had a first chance of test driving it at home.
What do we have here?
The Smoke Signal is the Sushi Box FX interpretation of the Meatsmoke preamp.
It has two tubes in the circuit and two channels.
As I understood it, and forgive my using terrible layman's terms here, the tubes in use (12AX7) have two stages. The Blue channel (clean) passes the first stage in each tube while the red channel (dirty) passes both stages in both tubes.
Both channels have the full setup of knobs, which are your typical Gain/Bass/Mids/Treble/Master configuration.
The Foot switches let you choose the channel (red/blue) or put the pedal in true bypass.
There is another 1/4" output, labeled record out and two more switches, labeled Filter and Level. If you use the record out, you get the option of a simple cabinet simulation, done by filtering (HPF and LPF, I believe). With the level switch you can choose between line and instrument level and with the filter switch you can choose the intensity of the filtering.
The current draw is mighty - around 900mA during warmup and 480mA during operation. I've connected it to a single outlet of my Cioks DC-7 that offers 660mA, which works just fine - I don't notice a longer warm up period.
Gain and Master are self explaining knobs, obviously.
The EQ section is less intuitive to people that have first contact with this particular tone stack - once more we encounter my old friend, the Alembic/Fender EQ.
What's not intuitive about this?
Well, in a nutshell: The circuit is more or less unable to cut treble & bass and unable to boost mids.
The flat setting is with treble and bass just a touch beyond 0 and with the mids wide open.
Beyond that, the knobs influence each other. There is a bit of a bump in the mids that moves around when you turn the treble knob (while at the same time you increase/decrease treble boost). It's a bit weird at first, but once you get the gist of it, it works pretty well for bass guitar. Both bass and treble are kind of shelving EQs, they influence well past the frequency range my 6 string bass is capable of.
The build quality is what I expected from Sushi Box FX - hand made with fine components. The price - for what you get, is a bargain.
I was hoping that, under ideal circumstances, I could squeeze someting very similar to the Underground Accelerators sound out of the blue channel and then have the red channel to go nuts - which could mean that I can ditch the dedicated dirt pedal from my board and use the Smoke signal for both the preamping and the overdrive job.
After a first session, I was under the impression that I could not, though.
A second session, however, kind of left me a bit confused.
Let me start on the red channel since this is easier.
The Smoke Signal with the Red LED lit up covers all my needs for overdrive without breaking a sweat. It starts with that typical tube growl that so many solid state pedals try to emulate (some with success) with minimal gain settings and is full on chainsaw with the gain maxed. You get so much nasty compression, even a feeling of sag, that you feel like you ventured past the grounds of Overdrive and stand firmly on Fuzz Territory. The in between is a rich and varied soundscape of passing a bass signal through a garden shredder. It's a joy to twiddle the knobs and see what happens because everything sounds kind of good. Makes you want to start a stoner rock trio where a ten minute guitar solo would give you the room to explore some of the settings.
When I go for my overdrive sound, I mostly want the vibe of a concert so loud you crank your tube amp to the max, with the speakers on the brink of quickly farting themselves towards the afterlife and the amp struggling hard to stay clean, but failing badly.
The Smoke signal can not only give you that sound, it asks you what flavor you want. You can go nuts on the EQ and dial back gain or you can set a higher gain with less extreme EQ settings and work your way to Overdrive Nirvana from there.
Let's get to the blue channel then.
Basically I could say it's the less dirty channel, but the blue channel alone is capable of a variety of overdrives.
If you are looking for a pedal that can give you two different versions of high class dirt, the Smoke Signal delivers - you could use it as a dual channel overdrive with the blue channel giving you lower gain tube drive and the red channel covering the higher gain demands.
With the gain set lower, you will also get clean sounds.
The feeling I have when I compare the Paricle Accelerator, the Underground Accelerator and the Smoke Signal in terms of how the gain works, is as follows:
The Particle Accelerator will distort when driven hard, but it WANTS to stay clean and will do so as long as possible.
The Smoke Signal will distort easily when driven and it WANTS to enrich your signal with overdrive, getting into the regions of dirt pretty quickly.
The Underground Accelerator will distort when driven, it sounds like it likes it, but actually it prefers to hover just on the edge. There is a big area on the gain where you can hear harmonic overtones singing when you play high notes while the lower notes are still clean. This is where the UA is strong and where its magic happens.
Hitting that sweet spot on the Smoke signal is a very precise science, because you instantly slip off into "real" overdrive.
@bassbrad described in the Sushi thread that the Particle Accelerator has a certain something that the Underground Accelerator has "mo' better", which is not present in the Smoke Signal, while the Smoke Signal has a little somthing the other pedals do not have. I can second that, but I want to put my thumb on it and see where I can get with more testing.
If I was to make a decision right now, I'd stick with the Underground Accelerator because, for want of better words, in my particular case, the UA is doing magic while the SS is doing a very good job on the clean channel and the best tube overdrive sounds I've heard in a long while.